Condition Analysis
AI-powered assessment using site data and 14-day weather history
The rock has had only about 1.5 dry days since the last significant rain (2.9mm on May 5th, plus 8.9mm on May 3rd), which is insufficient drying time for porous Fell Sandstone even at this exposed SW-facing crag. With further rain forecast from tomorrow through the weekend, conditions are unlikely to improve in the near term.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Kyloe Out's open, exposed position and SW aspect give it significantly better drying than its sheltered woodland neighbour Kyloe-in-the-Woods, but the 2–3 dry day minimum after rain still applies to this porous Fell Sandstone.
- The isolated buttresses (Saints Wall, Space Buttress, Central Wall) dry at different rates — lower sections and north-facing sides of individual buttresses will hold moisture longer than upper, sun-facing faces.
- The recent pattern of repeated light showers interspersed with short dry spells (8.9mm on May 3rd, 2.9mm on May 5th, 0.3mm today) prevents the rock from fully drying out between wettings, maintaining elevated internal moisture.
- Access is by permissive agreement with the farmer — park on the road verge at NU 035 399 and do not block the farm gate; maintaining this relationship depends on responsible behaviour including not climbing on wet rock.
Warnings
2
- Fell Sandstone holds can snap without warning when the rock is internally damp — surface dryness is not a reliable indicator of safety.
- The forecast shows repeated rain events through to May 12th; do not assume short dry windows between showers are sufficient for this porous rock type.
Reasoning
With 8.9mm on May 3rd followed by only one full dry day before 2.9mm fell on May 5th, and a further 0.3mm today, the rock's internal moisture level is likely still elevated despite the surface potentially appearing dry in places.
The SW aspect and exposed position provide above-average drying, but only ~1.5 genuinely dry days have elapsed since the May 5th rain, falling short of the 2–3 dry day minimum recommended for this crag; humidity has averaged 76% over the past week, further slowing evaporation.
Fell Sandstone loses up to 32% compressive strength when wet, and the cumulative wetting from repeated showers over the past fortnight means iron-oxide cemented holds are at meaningful risk of breakage.
Spring conditions in early May are improving but temperatures remain modest (~9°C average last 7 days) and the frequent showery pattern is typical of Northumberland spring weather, limiting sustained drying windows.
Contributing Factors
6
8.9mm on May 3rd and 2.9mm on May 5th with only brief dry spells between mean the rock has been repeatedly re-wetted without time to fully dry.
Only about 1.5 dry days since the last meaningful rain on May 5th, well short of the 2–3 day minimum for Fell Sandstone at this crag.
The open, exposed SW-facing site benefits from good solar radiation and wind, providing above-average drying compared to sheltered or north-facing crags.
Temperatures around 8–14°C provide reasonable but not strong evaporative drying; not cold enough to stall drying but not warm enough to accelerate it significantly.
Average humidity of 76% over the past week reduces the evaporative gradient and slows drying from the rock surface.
3.5mm forecast for May 8th and 7.6mm for May 9th will re-wet the rock before it has had a chance to dry properly from recent rainfall.
Recommendations
3
- Do not climb today — the rock has not had sufficient drying time since rain on May 5th and the repeated wetting pattern means internal moisture is likely still elevated.
- Monitor the forecast closely; the next realistic climbing window may not open until at least 2–3 consecutive dry days follow the rain expected on May 8th–9th and May 11th.
- If visiting, use the ground-at-the-base test: if soil beneath the buttresses is still damp, the rock interior is almost certainly too wet to climb safely.
Previous Analyses
Marginal — Assess Conditions
55%
2 days ago
The last significant rain was 2.9mm on May 5th, with only one full dry day since (today), though the exposed SW aspect, low humidity (45–50%), and moderate SE wind today are providing reasonable drying conditions. However, the preceding week has been persistently damp (8.9mm on May 3rd, cumulative 12.8mm over 7 days) and the rock may still retain internal moisture, so a careful on-site assessment is essential before climbing.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Kyloe Out's isolated buttresses on open moorland benefit from all-round air circulation, drying noticeably faster than the sheltered Kyloe-in-the-Woods, but the base of buttresses and north-facing sides of blocks will lag behind.
- The scattered buttress layout (Saints Wall, Space Buttress, Central Wall) means each feature has slightly different exposure — south-west facing panels will be driest while any east or north-facing sides may still hold dampness from the recent wet spell.
- Access is permissive via the farmer — park carefully on the verge at NU 035 399 without blocking the farm gate; maintaining goodwill is essential for continued access to this crag.
- Heavy rain is forecast from May 9th–10th (nearly 40mm combined), which will thoroughly re-saturate the rock and likely put the crag out of condition for several days afterwards.
Warnings
2
- Do not climb on any section that feels cool or damp to the touch — surface-dry Fell Sandstone can still be internally saturated and structurally weakened.
- The approaching heavy rain (nearly 40mm over May 9th–10th) will require at least 3+ dry days of good conditions afterwards before the rock is safe again.
Reasoning
The rock received 2.9mm on May 5th and trace amounts on May 1st–2nd, on top of 8.9mm on May 3rd, giving a persistently damp background over the past week with only isolated dry days between showers.
Today's conditions are favourable for drying — humidity dropping to 45–50%, moderate SE wind (~18 km/h), and clear skies on a SW-facing exposed crag — but only one full dry day has elapsed since the last notable rain, which is below the recommended 2-day minimum for porous sandstone.
With 12.8mm over the past 7 days and limited consecutive dry time, internal moisture levels may still be elevated enough to cause measurable strength reduction in this porous Fell Sandstone, particularly on lower sections of buttresses.
Early May in Northumberland brings cool temperatures (average 8.8°C over the past week) that slow evaporation, and while freeze-thaw risk is minimal at current temps, the cool and humid conditions mean drying is slower than midsummer.
Contributing Factors
6
2.9mm fell on May 5th — only one full dry day has passed, which is below the 2-day minimum guideline for porous Fell Sandstone.
12.8mm over the past 7 days with rain on multiple days means the rock has had little opportunity to fully dry out between wetting events.
The SW-facing exposed site is receiving direct afternoon sun with low humidity (45–50%) and moderate wind, providing above-average drying conditions today.
Today's humidity has dropped to 45–50% with winds around 18 km/h from the SE, creating effective evaporative conditions for the exposed upper surfaces.
Average temperatures around 8–9°C slow evaporation compared to summer conditions, meaning drying takes longer than the site's exposed aspect might suggest.
12.2mm on May 9th and 27.6mm on May 10th will thoroughly re-saturate the rock, closing the current drying window.
Recommendations
3
- If visiting today, carefully test the rock at the base of each buttress — if the ground or lower rock feels damp at all, do not climb and wait for further drying.
- Prioritise the most exposed, south-west facing upper panels of buttresses such as Saints Wall which will have dried fastest; avoid any shaded or north-facing sides.
- Plan any climbing for today or tomorrow at the latest, as significant rain from May 9th onward will put the crag firmly out of condition for several days.
Marginal — Assess Conditions
62%
3 days ago
The last significant rain was 8.9mm on May 3rd, giving only two full dry days (May 4th and today, May 5th). While Kyloe Out's exposed SW aspect and moderate wind have aided drying, the standard 48–72 hour guideline for heavier rain on Fell Sandstone means the rock may still hold internal moisture — a visual assessment on arrival is essential before committing to climb.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Kyloe Out's isolated open-ground buttresses (Saints Wall, Space Buttress, Central Wall) are fully exposed to wind from all directions, giving it a significant drying advantage over its sheltered woodland neighbour Kyloe-in-the-Woods.
- The SW aspect receives good afternoon solar radiation in May, but today's heavy cloud cover (88–100%) and cool northerly airflow (~8°C) substantially reduce solar drying contribution.
- The preceding weeks have been persistently damp — 27.1mm over 28 days with frequent light showers and high average humidity (78% over the last week) — meaning the sandstone's background moisture level is likely elevated beyond what the most recent 8.9mm event alone would suggest.
- The base sections of the buttresses and any north-facing or sheltered corners between the isolated blocks are likely to retain moisture longer than the exposed upper faces; check these areas carefully.
Warnings
2
- The rock surface may appear and feel dry while internal moisture persists — do not assume surface dryness means the holds are safe; iron oxide features on Fell Sandstone are particularly vulnerable to failure when internally damp.
- Persistent elevated background moisture from weeks of intermittent rain means standard drying guidelines may underestimate the time needed — exercise extra caution.
Reasoning
The 8.9mm rain on May 3rd followed weeks of intermittent showers and elevated humidity, meaning the rock's background saturation was already above baseline before this latest wetting event — two dry days is borderline adequate for this volume on porous Fell Sandstone.
Yesterday (May 4th) provided reasonable drying with temperatures reaching 14.6°C and moderate SW winds, but today is cooler (~8°C) with northerly winds and heavy overcast, reducing evaporation; cumulative drying over the two days is adequate for surface drying but internal moisture may persist.
With only two dry days after 8.9mm on elevated background moisture, there is a moderate risk that internal pore water has not fully dissipated — iron oxide holds could be weakened even if the surface feels dry.
Early May in Northumberland brings lengthening days and improving solar angles, but cool spells like today's (max 8.6°C) can stall drying; no freeze-thaw risk is present with overnight lows around 3°C.
Contributing Factors
7
8.9mm fell on May 3rd, only two full dry days ago, which is at the lower end of the 48–72 hour guideline for this volume on Fell Sandstone.
27.1mm over 28 days with frequent light showers and average humidity of 78% over the past week means the rock started from a wetter-than-usual baseline before the May 3rd event.
The fully exposed open-ground setting with SW aspect maximises wind and solar drying — significantly better than sheltered or north-facing crags.
May 4th reached 14.6°C with moderate SW winds and some sunny spells in the afternoon, providing a solid first drying day.
Today's max of only 8.6°C with near-100% cloud cover and northerly airflow limits solar drying contribution despite reasonable wind speeds.
Humidity has averaged around 78% over the past week, with overnight values reaching 80–86%, which slows the evaporative drying rate.
Wind speeds of 14–25 km/h over the drying period help move moist boundary-layer air from the rock surface, partially compensating for high humidity.
Recommendations
3
- Visit in the afternoon when any residual overnight moisture has had maximum time to evaporate, and check the base of the buttresses and sheltered corners — if these areas feel damp or the ground is moist, do not climb.
- Prioritise the upper, most exposed faces of the isolated buttresses (especially SW-facing walls) which will have dried fastest, and avoid lower slabby sections.
- If in any doubt about rock condition, consider waiting one more day — tomorrow (May 6th) promises lower humidity (63%) and continued dry weather, making it a significantly more confident choice.
Do Not Climb
55%
4 days ago
Yesterday (May 3rd) saw 8.9mm of rain in near-saturated conditions (93% humidity), and today is only the first dry day since; Fell Sandstone requires a minimum of 48–72 hours of dry weather after this level of rainfall, and with further rain forecast tomorrow the rock is unlikely to dry adequately.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Kyloe Out's exposed, open-ground position and SW aspect give it a significant drying advantage over its sheltered woodland neighbour Kyloe-in-the-Woods, but even this cannot compensate for only one dry day after 8.9mm of rain.
- The isolated buttress layout (Saints Wall, Space Buttress, Central Wall) means some faces will be more sheltered than others — lower sections and north-facing sides of individual buttresses will retain moisture longer.
- The recent wet pattern — 27.1mm over 28 days with multiple small rain events punctuating any drying — means the sandstone has had limited opportunity to fully dry out internally, raising the baseline moisture level.
- Today's improving afternoon conditions (humidity dropping to ~52%, some sun breaking through) will help surface drying, but interior saturation from yesterday's heavy rain will persist well beyond surface appearance.
Warnings
2
- Do not climb today — the Fell Sandstone is almost certainly still saturated internally after yesterday's 8.9mm rain despite potentially dry-looking surfaces.
- Climbing on damp Fell Sandstone causes permanent, irreversible damage to the iron oxide holds that define routes at Kyloe Out.
Reasoning
With 8.9mm falling yesterday in near-saturated air (93% humidity, 100% cloud), the porous Fell Sandstone will have absorbed significant water and is almost certainly still saturated internally despite today's drier surface conditions.
Today is only the first dry day; while the SW aspect and moderate westerly wind (~16 km/h) are helping, humidity remains elevated (74% daily average) and the rock needs at least 48–72 hours of good drying conditions after this level of rainfall.
The iron oxide holds characteristic of Fell Sandstone are at significant risk of breakage given the likely high internal moisture content — climbing now risks permanent damage to routes.
Spring conditions in early May are improving but the recent weeks have been persistently damp with above-average humidity, meaning the sandstone has had a poor baseline drying opportunity going into this latest rain event.
Contributing Factors
8
8.9mm fell on May 3rd across the morning in near-saturated conditions (93% humidity), thoroughly wetting the porous sandstone.
Fell Sandstone requires 48–72+ hours of dry weather after 8–10mm rain, and today is only the first dry day since.
27.1mm over the last 28 days with frequent small rain events means the rock's baseline moisture level has been elevated for weeks.
The open, exposed site with SW aspect receives good solar radiation and wind, giving it above-average drying potential compared to sheltered crags.
Humidity drops to ~52% by early afternoon with some cloud breaks, which will accelerate surface evaporation today.
2.6mm forecast for May 5th will reset drying progress before the rock has had a chance to dry from yesterday's rain.
Westerly wind at ~16 km/h helps move moist air away from the rock surface, aiding drying.
Humidity was 88–94% overnight and into the early morning, inhibiting any overnight drying.
Recommendations
3
- Wait at least until May 7th or later to allow adequate drying time, particularly given tomorrow's forecast rain will reset the drying clock.
- If visiting later this week, check that the ground at the base of the buttresses is sandy-dry before committing to climb — if the ground is still moist, the rock interior is certainly wet.
- Consider Kyloe Out over Kyloe-in-the-Woods when conditions do improve, as its exposed position dries significantly faster than the sheltered woodland crag.
Do Not Climb
92%
4 days ago
Kyloe Out received 8.7mm of rain today with 92% humidity and only 9°C, meaning the porous Fell Sandstone is currently saturated. With no consecutive dry days and persistently high humidity over the past week, climbing today would risk permanent damage to the rock and holds.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Kyloe Out's exposed, open position and SW aspect normally aid drying, but today's NE wind direction means the faces are sheltered from the prevailing airflow, significantly reducing drying benefit.
- The isolated buttresses (Saints Wall, Space Buttress, Central Wall) lack the canopy shelter of neighbouring Kyloe-in-the-Woods but also lack the thermal mass of larger cliffs — they cool quickly and can hold surface moisture in calm, humid conditions.
- The past week has seen persistently high humidity (averaging 80%) with scattered light precipitation events on 1 May and 2 May preceding today's heavier 8.7mm, so the rock has not had a proper drying window since mid-April.
- Ground conditions at the base of the buttresses are a reliable proxy for internal rock moisture — if the soil and sandy ground are damp, the sandstone is certainly still wet internally.
Warnings
2
- Climbing on wet Fell Sandstone causes permanent, irreversible damage to holds and routes — the NMC 'Love the rocks' ethic applies strictly here.
- The rock surface may appear dry before the interior has adequately dried; do not be deceived by surface appearance alone.
Reasoning
Today's 8.7mm of rain at 92% humidity has thoroughly wetted the porous Fell Sandstone, and prior light precipitation on 1 May (0.9mm) and 2 May (0.1mm) means the rock had no meaningful drying period beforehand.
With zero consecutive dry days, NE wind sheltering the SW-facing buttresses, and temperatures only reaching 9°C today, essentially no effective drying has occurred or will occur today.
At current saturation levels the sandstone has likely lost 30%+ of its compressive strength, making hold breakage and grain loosening a serious risk on the iron-oxide-cemented features climbers rely on.
Early May in Northumberland brings improving but still unreliable conditions; the persistently high humidity (averaging 80% over the last week) and cool temperatures are slowing seasonal drying recovery.
Contributing Factors
7
8.7mm of rain today has fully saturated the porous sandstone surface and penetrated well into the rock interior.
There have been no consecutive dry days leading into today, with light rain on 1 May and 2 May preceding today's heavier event.
Today's 92% humidity and a 7-day average of 80% severely limit evaporative drying from the rock surface.
Today's maximum of only 9°C provides minimal thermal energy to drive moisture from the rock.
The NE wind today does not effectively ventilate the SW-facing buttresses, negating the crag's usual exposed-drying advantage.
The favourable SW aspect would normally aid solar drying, but overcast wet conditions today eliminate any solar benefit.
The open hilltop setting normally accelerates drying, but today's unfavourable wind direction and high humidity negate this advantage.
Recommendations
3
- Do not climb today — the rock is saturated after 8.7mm of rain and needs a minimum of 2–3 full dry days with favourable winds before it will be safe.
- Monitor the forecast closely: if the dry day on 4 May is followed by the predicted 4mm on 5 May, the drying clock resets and you may need to wait until 8 May or later.
- On arrival after any waiting period, check the ground at the base of the buttresses — if the soil is still damp, the sandstone interior is certainly still wet.
Do Not Climb
92%
4 days ago
Kyloe Out received 10.2mm of rain today with 93% humidity and has had no consecutive dry days — the Fell Sandstone will be thoroughly saturated. Even with its exposed SW aspect, the rock needs a minimum of 48–72 hours of dry weather before climbing can be considered.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Kyloe Out's isolated buttresses (Saints Wall, Space Buttress, Central Wall) are fully exposed to weather from all directions, meaning today's 10.2mm of rain will have wetted every face uniformly with no sheltered areas to fall back on.
- The NE wind today is blowing directly onto the SW-facing rock, pushing moisture into the surface rather than aiding evaporation — the worst possible wind direction for drying this aspect.
- Unlike its sheltered woodland neighbour Kyloe-in-the-Woods, the open aspect here will aid faster drying once conditions improve, but the recent pattern of frequent light rain events (11.3mm in the last 7 days) has kept the rock's internal moisture elevated throughout late April.
- The base areas of these low buttresses sitting on open moorland will retain ground moisture and seepage longer than upper sections — check the ground at the crag base as a field indicator before any future visit.
Warnings
2
- Climbing on saturated Fell Sandstone risks permanent hold breakage — the small iron-oxide cemented features that define routes here are irreplaceable once broken.
- The surface may appear dry before the interior has drained — do not be deceived by a dry-looking surface after only one day of drying.
Reasoning
The rock is currently saturated following 10.2mm of heavy rain today at 93% humidity, compounded by a week of intermittent precipitation totalling 11.3mm with no meaningful dry spell to allow internal drainage.
Today's NE wind opposes the SW-facing aspect, inhibiting evaporation; drying cannot meaningfully begin until tomorrow when the wind shifts to SW and humidity drops to 74%, but even then 48–72 hours of dry weather is the minimum requirement after this volume of rain.
With the rock at or near full saturation, compressive strength is reduced by an estimated 30–50%, making hold breakage a serious risk on the small iron-oxide cemented holds that characterise Fell Sandstone.
Spring conditions in early May offer moderate temperatures (9–15°C) and lengthening days that will aid drying, but the persistently high humidity (averaging 80% over the last week) and frequent rain events are slowing seasonal recovery.
Contributing Factors
6
10.2mm of rain today will have driven a deep wetting front into the porous Fell Sandstone, requiring a minimum 48–72 hours of dry weather to recover.
Today's 93% humidity and a 7-day average of 80% severely inhibit evaporation, meaning the rock surface cannot shed moisture effectively.
Today's NE wind blows directly onto the SW-facing buttresses, pushing moist air against the rock rather than drawing moisture away.
11.3mm over the past 7 days with zero consecutive dry days means the sandstone has had no opportunity to drain internally before today's soaking.
The fully exposed, unsheltered setting will promote relatively fast drying once conditions improve — faster than woodland crags — but this advantage cannot take effect until the rain stops and humidity drops.
The SW-facing aspect will receive good afternoon solar radiation during forecast dry days, aiding surface evaporation once skies clear.
Recommendations
3
- Do not climb today or tomorrow — the rock is saturated and needs at least 48–72 hours of genuinely dry weather to begin recovering.
- The earliest realistic window is May 6th onwards, but only if the forecast light showers (0.3–0.8mm) don't reset the drying clock — check conditions on arrival by testing the ground at the crag base.
- Follow NMC 'Love the rocks' guidelines: if any part of the rock feels cool or damp to the touch, or the ground beneath is moist, walk away and return another day.
Do Not Climb
95%
4 days ago
Kyloe Out received 13.5mm of heavy rain today with 94% humidity, thoroughly saturating the porous Fell Sandstone. The rock will need a minimum of 48–72 hours of dry weather to become safe, and the forecast shows only light intermittent precipitation over the coming days, keeping conditions marginal.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Kyloe Out's exposed, open position and SW aspect are advantages for drying, but today's 13.5mm soaking with near-saturated humidity will have driven moisture deep into the porous sandstone.
- The isolated buttresses (Saints Wall, Space Buttress, Central Wall) lack tree shelter, which aids wind-drying, but also means the full crag face took the brunt of today's rain with no canopy protection.
- The preceding weeks have seen persistently elevated humidity (averaging 80% over the last 7 days) with frequent light rain events, meaning the rock likely never fully dried out before today's heavy soaking.
- Access is permissive via agreement with the farmer — climbing on wet rock risks both permanent route damage and jeopardising this access arrangement.
Warnings
2
- 13.5mm of rain today has thoroughly saturated the Fell Sandstone — climbing now risks irreversible hold breakage and route damage.
- The rock surface may appear dry before the interior has dried sufficiently; do not be deceived by surface appearance over the coming days.
Reasoning
Today's 13.5mm rainfall at 94% humidity will have saturated the Fell Sandstone well beyond the critical 1% threshold, with the wetting front penetrating deeply given the rock's high porosity (6.5–20.7%).
Despite the SW aspect and exposed position, drying has barely begun — the rain fell today, humidity remains very high, and wind is only moderate at 18 km/h from the NE (not hitting the SW face effectively); meaningful drying cannot start until tomorrow at earliest.
With the rock at or near full saturation, compressive strength is reduced by 10–50% (average 32%), making hold breakage a serious risk — the iron oxide deposits that form small holds are particularly vulnerable when wet.
Spring conditions in early May mean improving but still unreliable drying capacity; the preceding weeks of elevated humidity and frequent light rain suggest the rock has been in a chronically damp state even before today's heavy event.
Contributing Factors
6
13.5mm of rain today is well above the heavy threshold, saturating the porous sandstone thoroughly.
94% humidity today with an 80% 7-day average severely limits evaporation and drying potential.
Frequent light rain events over the past two weeks (0.1–1.7mm on multiple days) mean the rock was unlikely fully dry before today's soaking.
The exposed SW-facing position will aid drying once skies clear and humidity drops, but this benefit has not yet had time to act.
Today's NE wind at 18 km/h is hitting the sheltered side of the SW-facing crag, reducing its drying effectiveness.
Trace to light precipitation forecast on most of the next 5 days (totalling 2.2mm) will repeatedly reset drying progress on already-saturated rock.
Recommendations
3
- Do not climb today — the rock is saturated from 13.5mm of rain and any climbing risks permanent hold damage and personal injury.
- Wait for at least 2–3 consecutive fully dry days with humidity below 70% before considering a visit; monitor conditions closely.
- When you do visit, check the ground at the base of each buttress — if it is damp rather than sandy-dry, the rock is still holding internal moisture.
Do Not Climb
60%
5 days ago
Today has seen 0.9mm of rain with high humidity (84%), and yesterday also had 0.9mm — there have been zero consecutive dry days. Although the recent rainfall totals are light and the crag's exposed SW aspect aids drying, the persistent high humidity and lack of a solid dry spell mean the rock cannot be confidently declared dry, especially with 5.7mm forecast tomorrow.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Kyloe Out's exposed, open setting and SW aspect give it a significant drying advantage over its sheltered woodland neighbour Kyloe-in-the-Woods, but this does not eliminate the need for dry days after rain.
- The isolated buttresses (Saints Wall, Space Buttress, Central Wall) vary in micro-aspect and shelter; some faces may hold moisture longer than others, particularly any north-facing sides of the buttresses.
- Recent weeks have seen persistently elevated humidity (averaging 78% over the last 7 days, with several days above 80%), which suppresses evaporation even on an exposed crag.
- Access is by permissive agreement with the farmer — climbing on damp rock risks both route damage and the goodwill that sustains access to this crag.
Warnings
3
- Fell Sandstone loses significant strength at even low moisture levels — surface-dry appearance can mask dangerous internal saturation.
- Tomorrow's forecast of 5.7mm rain with 91% humidity will substantially re-wet the rock; do not plan a visit for the next several days.
- Permissive access depends on responsible behaviour — climbing on damp sandstone risks permanent route damage and potential access loss.
Reasoning
Light but repeated precipitation (0.9mm today, 0.9mm yesterday, 0.1mm on April 26–27) combined with persistently high humidity (78% average, 84% today) means the rock surface is likely damp and internal moisture levels remain elevated.
The SW-facing exposed aspect and moderate winds (~20 km/h) would normally provide good drying, but the lack of any consecutive dry days and humidity consistently above 75% have severely limited effective evaporative drying.
Fell Sandstone loses significant compressive strength even at low saturation levels; the repeated light wetting events over the past two weeks without a sustained dry spell mean internal moisture is likely above safe thresholds for the small iron-oxide cemented holds.
Spring conditions in late April/early May are improving but temperatures have been modest (averaging ~9.4°C over the last week), and the upcoming forecast shows a wet and cool spell that will prevent meaningful drying for several days.
Contributing Factors
6
Rain today (0.9mm) and yesterday (0.9mm) means zero consecutive dry days, keeping the rock surface and near-surface layers moist.
Humidity has averaged 78% over the past week with today at 84%, severely suppressing evaporative drying even on an exposed crag.
The open, wind-exposed SW-facing setting provides above-average drying potential when conditions allow, and is a significant advantage over sheltered crags.
Winds around 20 km/h and temperatures around 10–15°C provide some drying capacity but are insufficient to overcome the humidity and ongoing precipitation.
22.8mm over the past 28 days with frequent light wetting events means the sandstone has rarely had a chance to dry out fully through its depth.
Tomorrow brings 5.7mm with 91% humidity, followed by further showers on May 5–7, meaning conditions will deteriorate before they improve.
Recommendations
3
- Do not climb today — the rock has had zero consecutive dry days and humidity is too high for confidence in drying.
- Monitor conditions after May 8, which is the first forecast dry day that could begin a drying window if conditions hold.
- If visiting the area, consider nearby non-porous alternatives (e.g. whinstone at the Great Whin Sill crags) which are less sensitive to moisture.
Marginal — Assess Conditions
60%
6 days ago
The rock has had a broadly dry spell since the last significant rain on April 15th (8mm), with only trace amounts since, but today's 0.7mm and persistently high humidity (averaging 79% over the past week) introduce uncertainty. The exposed SW aspect and reasonable temperatures are favourable, but a visual check on arrival is essential before committing to climb.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Kyloe Out's open, exposed position means it benefits from significantly better wind-drying than its sheltered neighbour Kyloe-in-the-Woods, but the isolated buttresses (Saints Wall, Space Buttress, Central Wall) each have different micro-aspects and some lee-side faces may retain moisture longer.
- The easterly winds prevailing over the last week (April 21–29) would have blown across the back of the SW-facing buttresses rather than directly drying the climbing faces, reducing effective drying despite the exposed setting.
- Despite low total precipitation recently, the persistent high humidity (77–87% daily for the past 10 days) has significantly slowed evaporative drying and may have allowed re-absorption of atmospheric moisture into the porous Fell Sandstone.
- The base sections of the buttresses, particularly where they meet grassy ground, will be the last to dry — check the soil and rock at crag base as a reliable indicator of internal moisture state.
Warnings
2
- Today's 0.7mm shower means surface conditions may be damp right now — wait until well into the afternoon for any surface moisture to evaporate before touching the rock.
- Do not assume the rock is dry internally based on surface appearance alone; Fell Sandstone can appear dry while retaining damaging levels of internal moisture.
Reasoning
The last significant rain was 8mm on April 15th (16 days ago), with only trace amounts (0–0.7mm) since, so the rock should have largely dried internally, though persistently high humidity (79% average) has slowed the process and today's 0.7mm light shower adds a fresh surface film.
The SW aspect is favourable for solar drying during the afternoon, but the prevailing easterly winds over the past week have not been blowing directly onto the main climbing faces, somewhat negating the benefit of the exposed setting; the shift to S/SE winds today and SW tomorrow is more helpful.
With April's cumulative 27.8mm spread across multiple small events and persistent humidity, there is a low-to-moderate risk of residual internal moisture weakening the iron-oxide cemented holds, particularly on lower sections and any seepage-prone features.
Early May in Northumberland brings improving conditions with longer days and rising temperatures (today's 20.7°C max is excellent), but spring weather remains changeable and the forecast shows further light rain on May 2–4 that will reset drying clocks.
Contributing Factors
7
Only 0.9mm of precipitation in the last 7 days and no significant rain since April 15th (8mm, 16 days ago), giving an extended drying window.
Average humidity of 79% over the past week, with several days above 80%, significantly slows evaporative drying and can allow moisture re-absorption into porous sandstone.
Today's 0.7mm will wet the surface and reset the immediate drying clock, though it is too light to penetrate deeply into already-dry rock.
The open, exposed site with SW-facing rock receives good afternoon sun and is well-positioned for wind-drying, especially as winds shift back to SW.
Today's 20.7°C maximum is the warmest in weeks and strongly promotes surface evaporation.
The prevailing E/SE winds over the past 7–10 days blow across the back of SW-facing buttresses, reducing direct drying effect on the main climbing surfaces.
28mm over the past 28 days across multiple rain events means the rock has been repeatedly wetted through spring, and full internal drying is not guaranteed despite recent dry spells.
Recommendations
3
- Perform a tactile and visual check on arrival: press your palm flat against shaded lower rock faces and check for any coolness or darkening that indicates retained moisture.
- Check the ground at the base of the buttresses — if the soil is still damp rather than sandy-dry, the rock likely retains internal moisture and should not be climbed.
- Prioritise upper sections and overhanging features which will have dried fastest; avoid low-lying slabs and any sections showing green algae or moss, which trap moisture against the rock.
Marginal — Assess Conditions
62%
9 days ago
The last meaningful rain was 8mm on April 15 followed by scattered trace amounts, with only 0.2mm in the last 7 days and two fully dry days — the exposed SW aspect and moderate winds should have allowed reasonable surface drying. However, persistently high humidity (81% average over the last week, with overnight values exceeding 90%) has significantly slowed drying, and 32mm over the past 28 days means the rock may still hold internal moisture; a careful on-site assessment is essential before committing to climb.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Kyloe Out's isolated buttresses on open ground are fully exposed to wind from all directions, which is the key advantage over its sheltered woodland neighbour — but recent days have seen light easterly winds (11–15 km/h) that offer less drying benefit to the SW-facing rock surfaces than the prevailing westerlies.
- The individual buttresses (Saints Wall, Space Buttress, Central Wall) vary in aspect and shelter — some faces may have dried better than others, so conditions should be assessed buttress by buttress rather than assumed uniform.
- Overnight humidity has been consistently above 88% with temperatures dropping to 1–4°C, which means dew formation is likely re-wetting rock surfaces each night, partially negating daytime drying.
- The 32mm of rain spread across the past 28 days represents a sustained wetting pattern typical of a Northumberland spring — even with dry spells between showers, the cumulative effect keeps the porous Fell Sandstone's moisture content elevated.
Warnings
2
- Do not climb on any surfaces that show even slight colour darkening or feel cool/damp — Fell Sandstone loses significant strength at very low moisture levels and hold breakage causes permanent, irreversible damage.
- Overnight dew has been heavy (humidity >90% with temps dropping to 1–4°C); rock surfaces may appear wet in the morning even without rain — allow several hours of sun and wind exposure before climbing.
Reasoning
The last significant rain (8mm) fell on April 15, fourteen days ago, but repeated light showers through April 16–21 (totalling ~3mm) kept the rock intermittently wetted, with only truly dry weather since April 22 — seven days of negligible precipitation but with very high ambient humidity limiting evaporative drying.
The SW aspect receives good afternoon solar radiation and the site is exposed, but recent winds have been light and predominantly from the east/SE (13–18 km/h), meaning the SW faces are somewhat sheltered from the prevailing airflow; combined with average humidity of 81% and overnight dew conditions, effective drying has been slower than the dry-day count alone would suggest.
With the last heavy wetting event two weeks ago and only trace moisture since, the structural risk is moderate-to-low — the rock should have shed most absorbed water, but the persistent humidity means some internal moisture likely remains, particularly in lower sections and recesses.
Late April in Northumberland brings improving but still cool conditions (average 7.6°C this week) with overnight near-frost temperatures and high humidity typical of spring — drying capacity is significantly below summer levels.
Contributing Factors
7
Only 0.2mm of rain in the past 7 days, and no measurable precipitation since April 27 (0.1mm trace), giving the rock a reasonable drying window.
Average humidity of 81% over the past week with overnight values exceeding 90% severely limits evaporative drying and likely causes nightly dew formation on rock surfaces.
The open, exposed setting and SW-facing rock benefit from afternoon sun and generally good wind exposure, making Kyloe Out one of the faster-drying Fell Sandstone venues.
Recent winds have been light (11–18 km/h) and predominantly from the east, reducing the drying benefit to SW-facing rock surfaces compared to the usual prevailing westerlies.
Average temperatures of only 7.6°C with overnight lows near 1–4°C provide limited thermal energy for evaporation compared to summer conditions.
32mm across the past 28 days, spread over multiple events, means the rock has been repeatedly wetted through April with limited sustained drying periods.
Two fully dry days is at the lower end of the minimum 2–3 day guideline for this crag, and the high humidity reduces effective drying within those days.
Recommendations
3
- Visit in the afternoon when the SW-facing rock has had maximum sun exposure and any overnight dew has evaporated — check the base of the buttresses for dampness as a field indicator of internal moisture.
- Prioritise upper sections and overhanging features on the most exposed buttresses (e.g. Space Buttress) which will have dried fastest; avoid any sections that feel cool to the touch or show colour differences suggesting dampness.
- If conditions look marginal today, tomorrow (April 30) looks more promising with stronger winds forecast (30 km/h from SE) and continued dry weather — an extra day could make a meaningful difference.
Climbing Outlook