Condition Analysis
AI-powered assessment using site data and 14-day weather history
The last significant rain was 11.4mm on May 3rd, followed by only one full dry day (May 4th and 6th) interspersed with 2.3mm on May 5th and trace precipitation today. While the SW aspect and moderate wind have aided drying, the combination of heavy recent rainfall, cool temperatures, and high average humidity means internal moisture is likely still present — conditions require careful on-site assessment before committing to climb.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The woodland canopy was significantly reduced by felling (2020) and Storm Arwen (2021), so the crag now dries faster than older guidebooks suggest, but it remains broadly sheltered and humidity can linger in the remnant tree cover.
- Steep pocket-rich rock is characteristic of Kyloe — pockets and horizontal breaks trap moisture and take longer to dry than vertical faces, so check features individually with a chalk test.
- Seepage from above has been historically noted even when the main face appears dry; the condition report from March specifically warns to check for seepage lines from the crag top.
- The designated northern gate approach track can be muddy after wet spells — if the ground at the base of the crag is still damp, the rock almost certainly retains internal moisture.
Warnings
2
- Do not climb on any visibly damp rock or features that darken a chalk test — Fell Sandstone loses significant structural strength at very low moisture levels and hold breakage causes permanent, irreversible damage.
- The coming week's forecast is poor with repeated rain; conditions are expected to deteriorate rather than improve.
Reasoning
The 11.4mm event on May 3rd saturated the rock significantly, and only ~3 days of mixed drying have elapsed (with 2.3mm on May 5th and trace amounts today), meaning internal moisture is likely still present despite possible surface drying.
The SW aspect and moderate southerly winds (15–23 km/h) over the last few days have aided surface evaporation, but temperatures averaging only ~8.8°C over the past week and humidity around 76% mean drying has been slow — likely insufficient for full internal drying after 11.4mm.
With the rock probably still holding internal moisture from May 3rd's heavy rain, there is a moderate risk of grain loosening and hold breakage, particularly on the small iron-oxide-cemented pockets that define Kyloe's bouldering.
Early May in Northumberland brings improving but still unreliable conditions; cool nights (down to 1.5–2.6°C recently) slow overnight drying and the spring weather pattern has been persistently showery.
Contributing Factors
7
11.4mm fell on May 3rd at 95% humidity, thoroughly wetting the rock and requiring 48–72+ hours of good drying conditions.
The 2.3mm on May 5th and trace precipitation today have interrupted what would otherwise be a continuous drying window since May 3rd.
The south-west facing aspect receives good afternoon solar radiation, which accelerates surface and shallow subsurface drying.
Average temperatures of ~8.8°C over the past week are relatively cool for effective evaporative drying of porous sandstone.
Winds of 14–24 km/h from southerly directions have provided useful air circulation to aid drying, though the partially sheltered woodland setting reduces their effectiveness.
Average humidity of 76% over the past week limits evaporative potential and slows the drying of internal moisture.
3.0mm is forecast for May 8th followed by 8.8mm on May 9th, meaning any ongoing drying will be reversed imminently.
Recommendations
3
- If visiting today, perform a thorough chalk test on holds and check for seepage from above before committing to any problem — if chalk darkens or the ground at the crag base is damp, do not climb.
- Avoid the lower sections and deep pocket features which retain moisture longest; if anything feels cool or slightly tacky to the touch, walk away.
- Consider postponing until a sustained dry spell emerges — the forecast shows further rain on May 8th and 9th, so conditions are unlikely to improve this week.
Previous Analyses
Marginal — Assess Conditions
55%
2 days ago
The last significant rain was 2.3mm on May 5th, with a heavier 11.4mm event on May 3rd. Today is the first full dry day with low humidity and moderate wind, but only ~24 hours have passed since the last rain and the rock has not had sufficient guaranteed drying time after the wet spell — 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.
- The woodland canopy was significantly reduced by felling (2020) and Storm Arwen (2021), improving air circulation and drying compared to older guidebook descriptions, but the site remains broadly sheltered.
- Steep pocket-rich rock is characteristic of Kyloe and these pockets trap and hold moisture longer than flat faces — inspect pockets individually with a chalk test before pulling on.
- Seepage from above remains a known issue even in apparently dry conditions; check for wet streaks on upper sections and at the base of problems.
- The 11.4mm rain on May 3rd followed by 2.3mm on May 5th means the rock has had minimal continuous drying — only today (May 6th) is truly dry with helpful low humidity (~45-50%) and some wind.
Warnings
2
- Heavy rain is forecast from May 8th onwards (15mm on May 9th, 28mm on May 10th) — today and possibly tomorrow morning represent the only viable climbing window for at least a week.
- Overnight frost (-1.1°C) on potentially damp rock creates a freeze-thaw risk; inspect holds carefully for any fresh granular looseness.
Reasoning
The rock received 11.4mm on May 3rd and a further 2.3mm on May 5th, with only one dry day (May 4th) in between and today being the first genuinely dry day with favourable humidity — internal moisture is likely still present, particularly in pockets and lower sections.
Today's conditions are excellent for drying (humidity dropping to 45%, moderate SE wind ~15-18 km/h, partly sunny), and the SW aspect will receive afternoon sun, but this represents only ~24 hours of effective drying since the last rain — borderline for the recommended 1-2 dry days minimum.
With recent cumulative rainfall of ~15mm over the past week and limited drying time, internal moisture levels may still be elevated enough to reduce hold strength, particularly in the pocket-rich features that define Kyloe's climbing.
Spring conditions in early May with overnight frost (-1.1°C last night) on potentially damp rock raise a minor freeze-thaw concern, though the single cycle is unlikely to cause significant damage if moisture levels are moderate.
Contributing Factors
6
11.4mm fell on May 3rd — a significant wetting event for porous Fell Sandstone that typically requires 48-72+ hours of dry weather to recover from.
May 4th was dry but May 5th brought another 2.3mm, meaning today is effectively the first continuous drying day since the wet spell.
Low humidity (45-50%), moderate wind (~15-18 km/h), partly sunny skies, and SW aspect receiving afternoon sun create near-ideal surface drying conditions.
The last 28 days have seen nearly 30mm of rain with average humidity of 77%, meaning background moisture levels in the rock are likely elevated.
Last night dropped to -1.1°C which could cause minor freeze-thaw stress on any internally damp rock, though a single cycle is limited in impact.
Post-felling and post-Storm Arwen, the crag now has better air circulation and sun exposure than historical descriptions suggest, aiding drying.
Recommendations
3
- Visit this afternoon if possible — the SW aspect and low humidity create the best drying window, but perform a thorough chalk test on pockets and holds before committing to any problem.
- Avoid lower sections and any areas showing seepage from above; focus on steeper, more exposed faces that dry fastest.
- If pockets feel cool to the touch or chalk darkens on contact, back off — the rock is still holding internal moisture and climbing risks permanent hold damage.
Do Not Climb
45%
3 days ago
Heavy rain (11.4mm) on May 3rd followed by only one full dry day (May 4th) and light drizzle today (0.5mm) means the rock is very likely still holding internal moisture. With average temperatures below 10°C over the past week and humidity averaging 79%, drying has been slow — the recommended minimum of 48–72 hours after heavy rain has not been met.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The 11.4mm on May 3rd at 95% humidity would have thoroughly saturated the porous Fell Sandstone pockets that characterise Kyloe's steep climbing — these cup-shaped features trap and hold water longer than flat faces.
- Since the 2020 tree felling and Storm Arwen canopy loss, the crag benefits from better air circulation than older guides suggest, which aids drying — but the woodland floor and base of the crag will still retain moisture in sheltered spots.
- Seepage from above remains a known issue at Kyloe even after canopy changes; the last condition report (March 2022) specifically warned to check for seepage and chalk-test holds when in doubt.
- The easterly/northerly winds forecast today and tomorrow offer less benefit to this SW-facing crag than the prevailing SW winds that would blow directly onto the face.
Warnings
3
- Do not climb today — the rock is almost certainly still saturated internally from 11.4mm rain on May 3rd with inadequate drying time.
- Steep pocket-rich problems are especially vulnerable: pockets trap water and iron-oxide holds are prone to breakage when damp.
- Surface-dry appearance is unreliable on Fell Sandstone — interior saturation can persist long after the surface feels dry.
Reasoning
The 11.4mm rainfall on May 3rd at 95% humidity will have saturated the rock significantly; only one full dry day (May 4th) has elapsed, which is well short of the 48–72 hour minimum for heavy rain on porous Fell Sandstone.
May 4th provided reasonable drying conditions (up to 14.9°C, humidity dropping to 54%, light SW winds), but a single day is insufficient after 11.4mm; today's 0.5mm drizzle and cool 8.6°C temperatures with northerly winds have interrupted the drying process.
With only ~30 hours of effective drying since heavy saturation, interior moisture levels are likely still elevated — climbing risks grain loosening and hold breakage on these iron-oxide pocket holds.
Spring conditions in Northumberland remain cool (7-day average 9.2°C) with relatively high humidity (79%), both of which significantly slow the drying rate compared to summer conditions.
Contributing Factors
9
11.4mm fell on May 3rd at 95% humidity, thoroughly saturating the porous sandstone well beyond the light-rain threshold.
Only one full dry day (May 4th) has passed since heavy rain — well short of the 48–72 hour guideline for >10mm on Fell Sandstone.
Today's 0.5mm precipitation (spread across morning/midday) re-wets the surface and resets partial drying progress.
The 7-day average of 9.2°C and today's maximum of only 8.6°C significantly reduce evaporation rates compared to warmer conditions.
Average humidity of 79% over the past week limits evaporative potential, and early-morning readings have been above 85%.
The south-westerly aspect means the crag receives afternoon sun when available, which aids surface drying.
Tree felling and Storm Arwen have opened up the canopy, improving ventilation compared to the historically sheltered woodland setting.
Today's 24.8 km/h northerly wind helps move moist air from the rock surface, though the direction is suboptimal for a SW-facing crag.
28mm over the past 28 days with multiple small rain events means the rock has had little opportunity for thorough deep drying this spring.
Recommendations
3
- Wait at least until May 7th before considering climbing — this allows 48+ hours of the forecast dry spell to elapse after today's drizzle.
- On arrival, perform the ground-moisture test: if the soil at the base of the crag is not sandy-dry, the rock is still too wet internally.
- Chalk-test holds before committing to any problem — rub chalk on the rock surface and check if it darkens, which indicates residual moisture.
Do Not Climb
70%
4 days ago
Yesterday (May 3rd) saw 11.4mm of heavy rain throughout the day in near-saturated conditions (94% humidity), with rain stopping only around mid-afternoon. Despite today being dry with improving conditions, only ~18 hours of drying have elapsed — far short of the 48–72+ hours needed after heavy rain on Fell Sandstone. The rock will almost certainly still be wet internally.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The woodland canopy loss since 2020/Storm Arwen means the crag now gets better air circulation than older guides suggest, but the remaining shelter still limits wind-assisted drying compared to fully exposed crags.
- Kyloe's steep pocket-rich rock actively traps moisture in horizontal features and pockets — these will be the last areas to dry and are exactly the holds climbers rely on.
- The preceding weeks have been persistently damp (27.5mm over 28 days, average humidity 80%) meaning the rock likely had elevated background moisture even before yesterday's heavy rain.
- Seepage from above remains a concern at Kyloe even when the main face appears dry — the March condition report specifically noted the need to check for seepage and chalk-test holds.
Warnings
2
- Fell Sandstone loses up to 50% of its compressive strength when wet — climbing today risks permanent hold breakage on irreplaceable problems.
- The surface may appear dry while the interior remains dangerously saturated; a chalk test or ground-moisture check is essential before climbing this week.
Reasoning
11.4mm of rain fell yesterday in near-saturated conditions (94% humidity, 97-99% humidity during rainfall hours), and the rock will be heavily saturated internally despite today's dry surface conditions.
Only ~18 hours of drying have occurred since heavy rain ceased, with overnight humidity around 89-95% providing negligible drying; today's improving conditions (humidity dropping to 54-60% in the afternoon, light westerly winds) are helpful but nowhere near sufficient to dry porous Fell Sandstone after this volume of rain.
At current saturation levels the rock will have lost 10-50% of its compressive strength, and the pocket-rich holds that define Kyloe are at genuine risk of breakage if climbed on.
Spring temperatures (7-14°C) and moderate humidity provide reasonable but not fast drying conditions; the persistently damp April (27.5mm, avg 80% humidity) means background moisture levels were already elevated before yesterday's soaking.
Contributing Factors
7
11.4mm fell on May 3rd across many hours, thoroughly wetting the rock and requiring 48-72+ hours of dry weather to adequately dry.
Only approximately 18 hours have passed since rain ceased, far below the minimum 48-72 hours required after heavy rain on Fell Sandstone.
The last 28 days have delivered 27.5mm with average humidity of 80%, meaning the rock entered yesterday's rain event with already elevated internal moisture.
Today is forecast completely dry with humidity dropping to 54-60% in the afternoon and light winds, which will begin the drying process.
The south-west facing aspect will receive afternoon sun, aiding surface evaporation, though internal drying lags significantly behind.
The steep pocket-heavy style of Kyloe means water collects in horizontal features and pockets, prolonging drying times for exactly the holds climbers use.
Despite canopy loss, the remaining woodland setting still reduces wind exposure and solar radiation reaching the rock face, slowing drying compared to fully exposed crags.
Recommendations
3
- Do not climb today — the rock is almost certainly still saturated internally after yesterday's 11.4mm of rain despite surface conditions appearing to improve.
- Wait at least until May 6th (48+ hours of dry weather with the benefit of tomorrow's strong northerly winds), then visually assess conditions including a chalk test on suspect holds.
- If visiting later in the week, check pockets and horizontal features carefully for residual moisture and look for seepage from above before committing to any problems.
Do Not Climb
92%
4 days ago
Today saw 11.3mm of heavy rain with 94% humidity and cool temperatures — the rock will be thoroughly saturated. With recent preceding moisture (1.7mm over the last two days before today) and high average humidity over the past week (81%), drying conditions have been poor and today's downpour will have deeply wetted the porous Fell Sandstone.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The woodland setting, though more open since 2020 felling and Storm Arwen, still provides partial shelter that reduces wind-assisted drying and can trap humid air around the crag.
- Steep pocket-rich rock at Kyloe holds moisture in horizontal features and pockets long after the main face appears dry — these are the holds climbers rely on most.
- The NE wind today blows directly onto the SW-facing crag, but at only 17.6 km/h with 94% humidity this provides negligible drying benefit and may even drive moisture into the rock surface.
- The last genuinely reliable condition report (late March) noted the importance of checking for seepage from above — after 11.3mm today, seepage lines from the plateau above are very likely active.
Warnings
3
- Climbing on saturated Fell Sandstone causes permanent, irreversible damage to holds — the pocket-rich rock at Kyloe is especially vulnerable.
- The surface may appear to dry before the interior does; do not be deceived by a seemingly dry face after only one dry day.
- Seepage from the plateau above is likely active following today's heavy rain and may persist for several days.
Reasoning
With 11.3mm falling today on top of 1.7mm in the preceding two days and persistently high humidity (81% average over the past week), the rock is almost certainly saturated well beyond the critical 1% threshold where significant strength loss begins.
Drying has not yet begun — rain fell today with 94% humidity and only 8.8°C; the SW aspect receives no benefit from today's NE wind, and meaningful drying will require at least 48-72 hours of dry, warmer, breezier conditions.
At current saturation levels, Fell Sandstone will have lost an estimated 30%+ of its compressive strength, creating serious risk of hold breakage on the pocket-rich features that define Kyloe's climbing.
Early May in Northumberland offers moderate temperatures but the recent pattern of frequent light rain punctuated by today's heavy event means the rock has had very little opportunity to dry out fully over the past month.
Contributing Factors
6
11.3mm of rain today is well above the threshold for significant saturation of porous Fell Sandstone, requiring 48-72+ hours of dry weather to recover.
Today's 94% humidity and a 7-day average of 81% mean evaporative drying is severely suppressed.
13.2mm over the past 7 days and 29mm over the past 28 days indicate the rock has had limited opportunity to fully dry out before today's soaking.
Today's max of only 8.8°C significantly slows evaporation rates compared to warmer conditions.
The SW-facing aspect normally aids drying via solar radiation, but today's overcast wet conditions and NE wind negate this advantage entirely.
Canopy loss since 2020 and Storm Arwen has improved air circulation compared to the crag's historically sheltered state, which will marginally help future drying.
Recommendations
3
- Do not climb today — the rock is saturated after 11.3mm of rain and conditions are clearly unsafe for Fell Sandstone.
- Wait a minimum of 48-72 hours of dry weather with moderate temperatures and some breeze before considering a visit; check the forecast carefully as 2.7mm is expected on May 5th.
- On any return visit, use the chalk test on pockets and check for seepage from above before committing to any problem — the ground at the crag base should be sandy-dry before climbing.
Do Not Climb
93%
4 days ago
Today saw 12.5mm of heavy rain with 94% humidity and cool temperatures — the rock will be thoroughly saturated. With no prior dry spell to speak of (1.0mm on May 1st, 0.7mm on May 2nd before today's downpour), Kyloe's Fell Sandstone is in its worst condition in weeks and needs at least 48–72 hours of dry weather to recover.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The post-Storm Arwen canopy loss means the crag is now more directly exposed to rainfall than older guides suggest, so today's 12.5mm will have hit the rock face more fully than in the pre-2020 sheltered era.
- Steep pocket-rich rock at Kyloe holds moisture in horizontal features and undercuts — these pockets will retain water long after the vertical faces appear dry, so a visual check of pocket interiors is essential before climbing.
- The approach track can become muddy after heavy rain; the designated northern gate track may be slippery, and ground moisture at the crag base is a reliable proxy for internal rock dampness.
- SE and NE winds over recent days provided little drying benefit for the SW-facing aspect, and today's NE wind actively pushes moisture toward the face rather than drawing it away.
Warnings
2
- 12.5mm of rain today has saturated the Fell Sandstone — climbing now will cause hold breakage and permanent route damage.
- The surface may appear to dry quickly tomorrow but the interior will remain saturated; do not be deceived by a dry-looking face.
Reasoning
Today's 12.5mm of rain at 94% humidity has thoroughly saturated the rock, following a week that already included 1.7mm of light precipitation and persistently high humidity (81% average) — the sandstone will be at or near critical saturation levels.
Effectively zero drying has occurred today given the heavy rain, NE wind (unfavourable for a SW-facing crag), and near-saturation humidity; the last genuinely dry spell was April 29–30 but was immediately undone by rain on May 1–3.
At 12.5mm absorption, Fell Sandstone will have suffered the rapid 80% compressive strength loss that occurs within the first few hours of wetting — climbing now risks hold breakage and permanent damage to Kyloe's iconic pocket features.
Spring temperatures around 8–9°C provide only modest evaporative potential, and the recent pattern of cool, humid days with intermittent rain means the rock has had little opportunity to dry out properly since mid-April.
Contributing Factors
6
12.5mm of precipitation today is well above the 10mm threshold requiring 48–72+ hours of dry weather for recovery.
94% humidity today effectively prevents any evaporative drying, and the 7-day average of 81% indicates a persistently damp atmospheric regime.
Today's NE wind blows moisture directly onto the SW-facing crag rather than drawing it away, negating any wind-assisted drying.
At 8.8°C maximum, evaporative potential is limited, and the 7-day average of only 9.1°C means drying has been sluggish all week.
Light rain on May 1st and 2nd means the rock had no meaningful dry period before today's heavy soaking, so moisture was already present internally.
Post-2020 canopy loss means the crag received the full force of today's rain, but will also benefit from better air circulation once drying conditions improve.
Recommendations
3
- Do not climb at Kyloe today — the rock is saturated and climbing risks permanent hold damage on these irreplaceable Fell Sandstone pockets.
- Wait for at least 48 hours of dry weather with favourable winds before visiting; the earliest realistic window is May 5–6 but conditions will need on-site verification.
- When you do visit, check pocket interiors and the ground at the crag base for dampness — if the ground is moist, the rock is still wet internally; use the chalk-touch test on holds before committing.
Do Not Climb
92%
4 days ago
Today saw 13.2mm of heavy rain with 95% humidity and cool temperatures — the rock will be thoroughly saturated. Kyloe-in-the-Woods needs a minimum of 48–72 hours of dry weather to recover from this level of wetting, and the forecast doesn't provide a reliable dry window until May 7th at the earliest.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The woodland setting, though more open since 2020 felling and Storm Arwen, still provides shelter that reduces wind-driven drying — today's NE wind would be partially blocked by remaining trees and the crag's SW aspect means no direct sun benefit from a NE airflow.
- Steep pocket-rich rock at Kyloe holds moisture in horizontal features and pockets long after the face appears dry — a chalk test on pockets is essential before committing to problems even after adequate drying time.
- The last reliable condition report (March 22) noted the importance of checking for seepage from above, which is likely to be active for several days following today's 13.2mm event.
- Cumulative moisture load has been significant: 15.1mm in the last 7 days and 30.9mm over 28 days, with average humidity at 81% — the rock has had little opportunity to fully dry out this spring.
Warnings
2
- Climbing on saturated Fell Sandstone risks irreversible hold breakage — 'Love the rocks' is the foremost Northumberland ethic.
- The rock surface may appear dry before the interior has adequately dried; do not rely on visual inspection alone after heavy rain.
Reasoning
Today's 13.2mm rainfall at 95% humidity will have fully saturated the rock surface and driven a deep wetting front into the porous Fell Sandstone, compounded by 1.7mm of light rain over the preceding two days.
With NE wind today offering no aspect-assisted drying on this SW-facing crag, cool temperatures (~8.8°C), and near-saturated air, essentially zero meaningful drying has occurred — the clock on drying has not yet started.
At current saturation levels the rock will have lost 10–50% of its compressive strength; climbing on the pocket-rich holds would risk hold breakage and permanent damage to Northumberland's premier bouldering venue.
Spring conditions in early May are improving but the recent spell of high humidity (81% average over 7 days) and repeated light rain events mean the rock has had limited opportunity to dry out between wetting events.
Contributing Factors
7
13.2mm of rain today represents a significant wetting event that will deeply saturate the porous Fell Sandstone.
95% humidity today with 81% average over the past week severely limits evaporative drying potential.
At 8.8°C max today, evaporation rates are low and the rock will retain moisture for an extended period.
NE wind on a SW-facing crag means the rock face is largely sheltered from today's airflow, further reducing drying.
15.1mm in the past 7 days and 30.9mm over 28 days means the rock has had sustained moisture input with insufficient drying windows.
Despite canopy loss, the remaining woodland setting reduces air circulation compared to fully exposed crags, slowing drying.
When southerly winds return (forecast May 4, 7, 8), the SW aspect will receive direct sun and favourable airflow to aid drying.
Recommendations
3
- Do not climb today — the rock is saturated and climbing would risk permanent hold damage at Northumberland's premier bouldering crag.
- Wait for at least 48–72 hours of genuinely dry weather with humidity below 75% before visiting; realistically May 7th or 8th is the earliest sensible window.
- On arrival after the dry spell, perform chalk tests on pockets and horizontal features, and check for seepage from above before climbing any problems.
Do Not Climb
45%
5 days ago
Today has seen 0.7mm of rain with high humidity (83%), following 1.0mm yesterday — there has been no meaningful dry spell to allow the rock to dry out. With 6.2mm of rain forecast tomorrow and persistently high humidity, conditions are unlikely to be suitable today and will worsen over the coming days.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The woodland setting, though more open since 2020 felling and Storm Arwen, still provides enough shelter to reduce wind-assisted drying — the 'perma-dry' reputation from older guides no longer holds.
- Steep pocket-rich Fell Sandstone at Kyloe retains moisture in horizontal features and undercuts, making these holds particularly vulnerable even when the main face appears dry.
- The SW aspect is favourable for solar drying in afternoon sun, but recent easterly and northeasterly winds have limited the benefit of the partial wind exposure.
- Seepage from above remains a known issue at Kyloe — the condition report from March emphasised checking for seepage and using a chalk test when in doubt, which is especially relevant after recent intermittent rain.
Warnings
3
- Fell Sandstone holds can break without warning when internally damp — surface dryness is not a reliable indicator of safe conditions.
- The steep pocket-rich style at Kyloe means iron-oxide-cemented holds bear significant load; these are especially vulnerable to moisture-related weakening.
- Rain is forecast for tomorrow (6.2mm) and again on May 6th (4.5mm), making conditions worse before they improve.
Reasoning
The rock has received small but frequent precipitation inputs over the past two weeks (6.3mm on Apr 15, plus scattered light amounts), with no sustained dry period longer than about 3 days, and today's 0.7mm adds fresh surface moisture at 83% humidity.
Although the SW aspect and moderate wind would normally aid drying, the persistent humidity averaging 79% over the last week and light but frequent rainfall have prevented a proper drying cycle from completing.
Fell Sandstone loses significant strength at very low saturation levels; the repeated wetting without adequate drying means internal moisture levels are likely elevated, posing a real risk of hold breakage in the pocket-rich rock.
Early May in Northumberland brings improving temperatures (averaging ~9–10°C recently) but spring weather remains unsettled, and the forecast shows further rain and cool conditions through the coming week.
Contributing Factors
7
Today's 0.7mm of rain at 83% humidity means fresh surface moisture with very limited evaporation potential.
The weather summary confirms zero consecutive dry days, meaning there has been no uninterrupted drying window for the rock to recover.
Humidity has averaged 79% over the last 7 days, severely limiting evaporative drying even during dry hours.
The south-west facing aspect receives good afternoon sun which helps surface drying during clear spells.
Canopy loss from 2020 felling and Storm Arwen has improved air circulation, aiding drying compared to the crag's historical sheltered state.
6.2mm forecast for May 3rd at 92% humidity will re-saturate the rock and reset any drying progress.
Temperatures around 10–15°C are adequate for some drying but not enough to rapidly drive off moisture at current humidity levels.
Recommendations
3
- Wait for a sustained dry spell of at least 2 full dry days with humidity below 70% before visiting — the current pattern of intermittent rain and high humidity has not allowed adequate drying.
- If you do visit, perform the chalk test on holds and check the ground at the base of the crag — if it is not sandy-dry, the rock is still holding moisture internally.
- Consider alternative non-porous venues (whinstone at Bowden Doors' neighbour crags or indoor walls) until conditions improve, as the coming week's forecast shows continued unsettled weather.
Marginal — Assess Conditions
68%
6 days ago
The rock has had an extended period of very low precipitation — only 0.4mm in the last 7 days — with today's warm conditions (nearly 20°C) and moderate SW wind aiding drying. However, persistently high humidity (~79% average) and cool overnight lows have limited drying efficiency, and the last meaningful rain (6.3mm on April 15) was followed by a series of trace-level moisture events that may have kept surface features damp; on-site assessment is strongly recommended before committing to climb.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Kyloe's steep, pocket-rich sandstone holds moisture in horizontal features and undercuts — even when the main face appears dry, pockets can retain dampness for days, so a chalk-touch test on key holds is essential.
- The post-2020 canopy loss has improved air circulation and solar exposure significantly, meaning the crag now dries faster than older guidebooks suggest, though the woodland floor can still retain ground moisture.
- Seepage from above remains a known issue at several lines — the March condition report specifically flags checking for seepage and chalk-testing, which is good practice today given the high ambient humidity of recent weeks.
- The SW aspect aligns well with the prevailing southerly winds and afternoon sun, giving Kyloe above-average drying potential for a Northumberland woodland crag.
Warnings
2
- Do not climb on any visibly damp holds — Fell Sandstone loses significant strength at even 1% saturation, and pocket holds are irreplaceable.
- Bird nesting restrictions may apply at some Northumberland crags in spring — check BMC RAD for current Kyloe access status before visiting.
Reasoning
The last significant rainfall was 6.3mm on April 15, over two weeks ago, but a persistent drizzle of trace amounts (0.1–0.4mm events on Apr 20, 21, 26, 27, 28, and today) combined with high humidity averaging 79–85% means the rock surface may not have fully dried out between these minor wetting events, particularly in pockets and sheltered features.
The SW aspect and partial wind exposure provide reasonable drying conditions, and today's 19.9°C peak is the warmest recently, but wind speeds have been moderate (12–18 km/h) with some unfavourable easterly/northeasterly directions in recent days, and overnight lows dropping to 1–4°C have limited 24-hour drying cycles.
With only trace precipitation over the past two weeks and no freeze-thaw risk at current temperatures (min 2.7°C today, well above 0°C), structural risk from moisture-weakened holds is low provided the rock is confirmed dry on arrival.
Early May in Northumberland is a transitional period with improving conditions but still-cool nights and variable humidity; the crag is entering its better season but hasn't yet reached reliable summer drying patterns.
Contributing Factors
6
Only 0.4mm of rain in the past 7 days and the last significant event (6.3mm) was over two weeks ago, giving ample theoretical drying time.
Average humidity of 79% over the last 7 days (peaking at 87% on Apr 25) significantly slows evaporation and can cause condensation on cool rock surfaces overnight.
Today's 19.9°C maximum is the warmest in weeks and will substantially boost surface evaporation, especially on the SW-facing rock receiving afternoon sun.
Six days in the last 10 recorded 0.1–0.4mm of precipitation — individually trivial but collectively enough to keep surface features and pockets lightly wetted in humid conditions.
The south-west facing aspect receives good afternoon solar radiation and the partially exposed setting allows moderate wind-assisted drying.
Overnight lows of 1–5°C in recent days slow drying to near-zero during nighttime hours and can cause condensation on rock surfaces.
Recommendations
3
- Perform a chalk-touch test on pockets and horizontal features before climbing — if chalk darkens or the rock feels cool and clammy, wait for further drying.
- Check the ground at the base of the crag: if the soil and leaf litter are damp rather than dry and crumbly, internal rock moisture is likely still elevated.
- Prioritise the steeper, more exposed walls and avoid any lines showing seepage from above or damp streaks around horizontal breaks.
Marginal — Assess Conditions
65%
9 days ago
The last significant rain was 6.3mm on April 15, followed by only trace amounts since then, and the crag has had roughly two weeks of near-dry weather with a SW aspect aiding drying. However, persistently high humidity (averaging 81% over the last week), cool temperatures, light winds, and the woodland setting mean drying has been sluggish — 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.
- Post-Storm Arwen canopy loss has improved air circulation significantly, but the woodland setting still limits direct solar exposure and wind penetration compared to open crags, slowing drying in still or humid conditions.
- Steep pocket-rich Fell Sandstone at Kyloe holds moisture in horizontal features and pockets long after the main face appears dry — always chalk-test pockets before pulling on them.
- The last condition report (March 22) noted seepage from above as a recurring issue; after the wet April (30.9mm in 28 days), seepage lines and damp patches at the base of problems are possible even now.
- Easterly and NE winds over the past week blow onto the sheltered side of a SW-facing crag, providing minimal drying benefit to the climbing face itself.
Warnings
2
- Pockets and horizontal features may hold residual moisture even when the main face appears dry — test before committing to moves on small holds.
- Overnight humidity has been above 90% recently; early morning visits may encounter condensation on the rock — allow time for sun and wind to dry the surface.
Reasoning
Only trace precipitation (<0.5mm total) in the last 13 days since the 6.3mm event on April 15, so surface moisture should have largely evaporated, but the consistently high humidity (78–87%) and cool temperatures suggest internal moisture may linger in pockets and lower sections.
The SW aspect would normally provide good solar drying, but the last week has seen predominantly E/NE/SE winds offering little benefit to the SW face, combined with high cloud cover and humidity averaging 81%, meaning drying rates have been below average despite the extended dry spell.
With nearly two weeks since meaningful rain and no freeze-thaw cycling (min temps staying above 1°C), structural risk from moisture-weakened holds is low but not negligible given the high ambient humidity slowing deep drying of porous Fell Sandstone.
Late April in Northumberland brings improving but still-cool conditions; temperatures averaging only 7.6°C over the past week are modest for drying, and spring humidity remains elevated compared to summer.
Contributing Factors
7
Only 0.3mm of trace precipitation in the last 7 days and negligible amounts since the 6.3mm rain on April 15, giving roughly two weeks of functionally dry weather.
Average humidity of 81% over the past week, with overnight readings regularly above 90%, significantly slows evaporation and can even re-wet exposed rock surfaces through condensation.
Average temperature of only 7.6°C over the last week limits evaporation rates, and overnight lows near 2–4°C further reduce drying potential.
The south-westerly aspect receives reasonable afternoon solar radiation in late April, aiding surface drying during clearer spells.
Recent E/NE/SE winds blow onto the sheltered rather than the exposed SW face, reducing the wind-driven drying effect on the climbing surface.
Despite canopy loss from felling and Storm Arwen, the woodland setting still limits wind penetration and full solar exposure compared to open crags.
30.9mm over 28 days is a moderate spring total for Northumberland — not extreme, but enough to keep deeper rock moisture elevated.
Recommendations
3
- Perform a thorough chalk test on holds and pockets before climbing — if chalk darkens or absorbs quickly, the rock is still too damp to climb safely.
- Focus on steeper, more overhanging problems first as these drain and dry fastest; avoid slab or lower-angled problems where moisture lingers.
- If the ground at the base of the crag feels damp or mossy areas are visibly wet, treat this as an indicator that the rock retains internal moisture and consider waiting.
Climbing Outlook