Condition Analysis
AI-powered assessment using site data and 14-day weather history
Dow Crag is wet today with ongoing light rain, very high humidity, and the crag is almost certainly in cloud. Recent days have seen intermittent rain following a prolonged wet April, and seepage lines will be active across the buttresses.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Dow Crag's five buttresses feature extensive seepage lines that remain active for days after heavy rain — the 102mm over the past 28 days will keep many of these running.
- The E/NE aspect means the crag loses direct sun by early afternoon, and at 600m with near-100% cloud cover today the rock will receive no meaningful solar drying.
- The 60+ minute approach via Walna Scar road means climbers are fully committed once at the crag — retreating in deteriorating conditions is a serious undertaking on this mountain venue.
- With temperatures at the crag likely around 3–8°C today and overnight lows near 3°C, any residual moisture in cracks and on ledges will persist; frost is possible on higher ledges overnight.
Warnings
3
- The crag is almost certainly in cloud today with wet rock — friction on BVS rhyolite is dramatically reduced when wet, making multi-pitch routes extremely dangerous.
- Overnight temperatures near 3°C at 600m combined with moisture mean icy patches are possible on ledges and in gullies during early morning approaches.
- The long approach and remote setting make this a serious proposition in current unsettled weather — carry full mountain kit and be prepared to turn back.
Reasoning
The rock is wet — 3.7mm of rain today on top of 2.8mm on May 5th and 11.4mm on May 3rd, with humidity consistently above 85% and the crag almost certainly engulfed in cloud, meaning continuous surface wetting from mist.
Despite the exposed position, drying has been negligible: easterly winds over the past few dry days helped somewhat, but humidity remained high and the E/NE aspect limits solar input, and today's rain and cloud have reset any drying progress.
The BVS rhyolite is non-porous so structural damage from moisture is not a concern, but the friction-dependent nature of many Dow Crag routes makes surface wetness a serious safety hazard.
Early May at 600m is still marginal season for a high mountain crag in the Lakes — temperatures are barely above freezing overnight, snow patches may linger in gullies, and conditions are far more wintry than the valley suggests.
Contributing Factors
6
Light but persistent rain is forecast throughout the afternoon and evening, totalling 3.7mm, ensuring the rock surface remains wet.
Humidity at 85–99% with near-total cloud cover means the crag is likely in cloud for most of the day, preventing any surface drying.
Over 21mm in the last 7 days and 102mm in 28 days means seepage lines across the buttresses will be well-charged and flowing.
Temperatures at crag level are around 3–8°C, slowing evaporation dramatically and keeping the rock cold and damp.
BVS rhyolite does not absorb water so there is no structural damage risk, and the rock will dry relatively quickly once conditions improve.
The exposed position normally aids drying, but today's moderate southerly winds (~20 km/h) are bringing moist air and rain, negating any drying benefit.
Recommendations
3
- Do not attempt Dow Crag today — the rock is wet, the crag is likely in cloud, and conditions are unsafe for friction-dependent climbing.
- Monitor the forecast for May 10th onwards, when a brief drier window with lower humidity may allow some surface drying, though assess conditions carefully on arrival.
- Consider lower-altitude, sheltered, south-facing valley crags in the Lakes as alternatives this week if you need a climbing fix.
Previous Analyses
Marginal — Assess Conditions
60%
2 days ago
After a prolonged dry spell from April 20–30, recent rain on May 1, 3, and 5 (totalling ~17mm) has re-wetted the crag, but today is forecast dry with dropping humidity and an easterly breeze directly onto the face — surface conditions may be acceptable by late morning if the crag clears cloud. However, seepage lines on this high mountain crag are likely still active given the wet preceding weeks, and tomorrow brings further rain.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Dow Crag's extensive seepage lines will still be running given ~18mm of rain in the last 5 days on top of a very wet April (nearly 100mm in 28 days), particularly on the deeper cracks and gullies between buttresses.
- The east/NE aspect means the crag catches morning sun and today's easterly wind blows directly onto the face, which is the best possible drying combination for this venue — but the crag is often in cloud at 600m even when the valley is clear.
- The 60+ minute approach via Walna Scar road means committing to a full mountain day; with rain returning tomorrow (May 7) and worsening through the week, today offers the only realistic window.
- At 600m altitude with overnight lows near 2°C, any residual moisture in cracks could have formed thin ice overnight — check sheltered ledges and north-facing recesses carefully.
Warnings
2
- Overnight lows near 2°C at crag altitude mean thin ice (verglas) may persist on shaded ledges and in cracks — test holds carefully.
- Rain returns from tomorrow and persists through the week; do not rely on being able to return to finish routes on subsequent days.
Reasoning
The crag received 2.8mm on May 5 and 11.4mm on May 3, following an earlier wet period; while the non-porous volcanic rock sheds surface water quickly, seepage from deeper drainage will still be active at many points across the buttresses.
Today's easterly wind (~15-24 km/h) blows directly onto the E/NE face with humidity dropping to ~50% by midday and partial sun clearing — good surface drying conditions, though only one full dry day has elapsed since the last rain.
Non-porous BVS rhyolite does not weaken when wet, so hold breakage is not a concern; the primary risk is friction loss on damp surfaces.
Early May at 600m altitude means temperatures are marginal (max ~8°C at crag level), overnight near-freezing temps can produce verglas, and the crag may still harbour remnant dampness from the exceptionally wet April.
Contributing Factors
6
2.8mm fell on May 5 and 11.4mm on May 3, with only one dry day since — seepage lines and sheltered areas will still be damp.
Easterly wind directly onto the E/NE face, humidity dropping to ~50%, and some sun clearance from late morning create good surface drying conditions.
Nearly 100mm in 28 days has saturated the hillside, feeding persistent seepage lines between and across the buttresses.
BVS rhyolite does not absorb water or weaken structurally, so exposed faces will shed surface moisture relatively quickly in wind.
At 600m the crag is frequently in cloud; cloud base sitting on the crag would halt all drying and coat surfaces in condensation.
Rain returns tomorrow (1.8mm) and worsens through the week with 15.9mm forecast for May 10, meaning conditions will not improve for several days.
Recommendations
3
- If climbing today, aim for the late-morning to early-afternoon window (11:00–15:00) when humidity is lowest and sun may reach the face — but test friction carefully on the first few moves before committing.
- Favour the more exposed, wind-scoured sections of the main buttresses (B and C Buttresses) where drainage is fastest; avoid deep gullies, chimneys, and the shaded recesses between buttresses.
- Carry a mountain weather forecast and be prepared to retreat — the 60-minute walk-in means you need to commit early and conditions can deteriorate rapidly at this altitude.
Do Not Climb
85%
3 days ago
Dow Crag is receiving rain today (4.5mm forecast) with showers through the morning and further rain expected late afternoon/evening, making the rock wet and slippery. Combined with 100mm of rain in the last 28 days and persistent high humidity at altitude, conditions are clearly unsuitable for climbing today.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Dow Crag's extensive seepage lines will be active given ~20mm of rain in the past week and over 100mm in 28 days — water will be running down multiple buttresses, particularly in the deeper gullies between buttresses B–D.
- The east/NE-facing aspect means the crag is shaded by afternoon, and today's heavy cloud cover (88–100% through midday) will prevent any meaningful solar drying of the rock surface.
- At 600m altitude, temperatures today are only 5–9°C with high humidity (80%+), drastically slowing evaporation even on this non-porous rock — surface moisture will linger all day.
- The 60+ minute approach via Walna Scar road means climbers would be committing to being on the mountain through the forecast late-afternoon rain (17:00–19:00), with no quick escape.
Warnings
3
- Active rain today with further showers forecast from 17:00–19:00 — wet volcanic rock is extremely slippery and multi-pitch routes at this venue are serious undertakings with limited escape options.
- Temperatures dropping to 2–3°C this evening at altitude with wind chill — hypothermia risk if caught out in rain on the crag.
- The long approach (60+ minutes) means you cannot easily retreat if conditions deteriorate during the afternoon rain window.
Reasoning
The rock is currently wet from overnight/morning showers (0.8mm at 10:00, 0.6mm at 12:00) following 11.4mm on May 3rd and light rain on May 1st–2nd, with seepage lines almost certainly running after 100mm in the last 28 days.
Despite the exposed position, the east/NE aspect combined with near-total cloud cover, high humidity (80–90%), and modest winds (10–15 km/h) today provide almost no effective drying — and further rain is forecast from 17:00 onwards.
Rhyolite/BVS rock does not suffer structural damage when wet, so hold breakage is not a concern; the risk is entirely friction-based.
Early May at 600m altitude means temperatures are still cool (5–9°C at the crag) and lingering winter moisture patterns persist; the prolonged wet April has saturated drainage lines that will take sustained dry weather to clear.
Contributing Factors
6
4.5mm of precipitation forecast today with showers mid-morning through midday and heavier rain from 17:00–19:00, keeping the rock wet throughout.
Over 100mm in the last 28 days with only brief dry spells means seepage lines are fully charged and drainage features across all five buttresses will be running.
Humidity at the crag has been 80–98% through the morning and is forecast to remain above 60% even in the brief afternoon clearing, severely limiting surface drying.
Cloud cover is 88–100% through the key morning hours when the east-facing crag would normally receive direct sun, eliminating the primary drying mechanism.
Winds of 10–20 km/h provide some drying effect but are insufficient to overcome active rainfall and high humidity today.
BVS rhyolite does not absorb water so will dry relatively quickly once rain stops and conditions improve, but surface friction is severely compromised while wet.
Recommendations
3
- Do not climb at Dow Crag today — the rock is wet from active showers and further rain is forecast for late afternoon.
- Consider tomorrow (May 6th) as a potential window: if the forecast 0mm holds and easterly winds continue, surfaces may dry sufficiently by late morning for an assessment.
- Check MWIS (Mountain Weather Information Service) for the Lake District fells before any visit this week — valley forecasts significantly underestimate conditions at 600m.
Marginal — Assess Conditions
55%
4 days ago
Dow Crag received 11.4mm of rain yesterday (May 3rd) with 100% cloud cover all day, and this morning started with near-100% humidity and likely cloud immersion. However, conditions are forecast to improve markedly through the afternoon with clearing skies, dropping humidity, and a moderate westerly breeze — the rock surface may dry sufficiently for a late-afternoon window, but given the high-altitude setting and extensive seepage after a very wet April (96mm), on-site assessment is essential.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Dow Crag's five buttresses have well-known seepage lines, particularly on B Buttress and the Great Gully area, which can weep for days after heavy rain — the 96mm over the past 28 days means these are very likely active.
- The east/north-east aspect means the crag loses direct sun by early afternoon; morning sun today was blocked by 100% cloud, so meaningful solar drying will be limited despite the afternoon clearing.
- At 600m the crag was almost certainly in cloud through the morning (100% cloud, 100% humidity at 07:00–08:00), meaning condensation will have added moisture to the rock surface beyond just yesterday's rainfall.
- The 60+ minute approach from Coniston means climbers arriving for an afternoon window need to set off by early afternoon at the latest — factor this into your planning given the limited drying time available.
Warnings
2
- The crag was likely in cloud this morning — if mist persists at altitude, surfaces will remain wet and conditions will be unsafe for friction-dependent climbing.
- 96mm of rain in the past month means seepage lines will be very active; routes crossing drainage features may be unclimbable even if main faces appear dry.
Reasoning
The rock received 11.4mm of rain yesterday with persistent 100% cloud and near-100% humidity through the night and into this morning, meaning surfaces were still wet or condensation-coated as of late morning.
Meaningful drying is only beginning now as humidity drops below 85% and cloud breaks from mid-afternoon; moderate westerly winds (15–20 km/h) will assist surface drying, but the E/NE aspect limits direct solar heating, so drying will be slow and incomplete.
No structural risk — BVS rhyolite is non-porous and does not weaken when wet; the concern is purely friction loss on damp surfaces.
Early May at 600m altitude means temperatures are marginal (around 6–10°C at the crag), cloud immersion is frequent, and the very wet April will have charged all seepage lines extensively.
Contributing Factors
7
11.4mm fell on May 3rd with persistent drizzle through the morning, saturating all surfaces and recharging seepage lines.
100% cloud cover and near-100% humidity from last night through this morning means the crag was likely in cloud, preventing any drying and adding condensation.
Cloud cover drops to 30–50% from 14:00 onward with humidity falling to the high 60s and a moderate 15–20 km/h westerly breeze, which will begin to dry exposed surfaces.
96mm over the past 28 days has thoroughly charged all seepage lines and drainage features across the buttresses, meaning even if surfaces dry, seepage will persist.
BVS rhyolite sheds surface water readily and does not absorb moisture, so exposed faces can dry within hours once conditions allow.
At 600m the crag is significantly colder than valley conditions and frequently sits in cloud, both of which slow drying dramatically.
The east-facing aspect means any afternoon clearing brings no direct sun to the main faces, relying solely on wind and ambient warmth for drying.
Recommendations
3
- If attempting today, target a late-afternoon arrival (15:00–16:00 at the crag) and focus on exposed, wind-scoured arêtes and upper sections of buttresses — avoid gullies, corners, and known seepage lines.
- Carry approach shoes for the walk-in and be prepared to retreat without climbing if surfaces are still damp or greasy on touch-testing holds at the base.
- Given the very wet April, be especially cautious of seepage on B Buttress and in the Great Gully area, which may weep for several more days regardless of surface drying.
Do Not Climb
70%
4 days ago
Dow Crag has received 11.4mm of rain today on top of light rain over the past two days, and at 600m with a NE-facing aspect, high humidity (92%), and moderate NE wind blowing directly onto the face, the rock will be wet and seepage lines active. Conditions are unsuitable for climbing today; a drying window begins tomorrow but the crag needs time to shed surface water and seepage.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Dow Crag's extensive seepage lines between the buttresses will be running after 15mm of rain in the last three days, and these take longer to clear than open face sections — particularly on the deeper gully routes between B and C Buttresses.
- The east/NE aspect means the crag catches morning sun only and is shaded by afternoon; with today's NE wind blowing directly into the face, evaporative drying will be partially offset by moisture-laden air being pushed onto the rock.
- At 600m altitude with 92% humidity and temperatures around 9°C, the crag is likely in or near cloud today — condensation and mist can keep rock damp even after rain stops.
- The long approach (60+ minutes from Coniston) means committing to a round trip of 3+ hours; conditions must be confidently good before setting out, as there is no quick retreat if the crag turns out to be wet.
Warnings
3
- The crag is almost certainly wet and slippery today — climbing on wet BVS rhyolite is a serious slip/fall hazard on multi-pitch mountain routes.
- At 600m with high humidity the crag may be in cloud; visibility could be poor and the long descent via South Rake or the Goat's Water path requires good navigation.
- Seepage lines between buttresses may persist for several days after heavy rain — assess individual routes carefully even when the main faces appear dry.
Reasoning
The crag received 11.4mm today, 2.6mm on May 1st, and 1.0mm on May 2nd — the rock surface is currently wet and seepage lines will be actively running across multiple buttresses.
With humidity at 92%, NE winds at 22.7 km/h blowing onto the E/NE face, and only ~9°C temperatures at altitude, meaningful drying will not begin until tomorrow when rain ceases and humidity drops to 84%, with further improvement over the following days.
Borrowdale Volcanic rhyolite is non-porous and does not suffer structural damage when wet; the concern is purely friction loss on what is normally an outstanding friction-dependent rock.
Early May at 600m in the Lake District is still marginal spring season — overnight temperatures near 3–5°C mean slow overnight drying, and residual snow patches in sheltered gullies could contribute additional meltwater seepage.
Contributing Factors
7
11.4mm of precipitation today means the crag is actively wet with running water on faces and in gullies.
15mm over the last 7 days and nearly 100mm over 28 days means groundwater and seepage sources are well-charged.
92% humidity at 600m with ~9°C temperatures means the crag is likely in cloud or mist, preventing any drying.
The exposed position will help surface drying once rain ceases and humidity drops, though today's NE wind blows directly onto the face.
BVS rhyolite does not absorb water so surface moisture will clear relatively quickly once conditions allow, and there is no structural damage risk.
The forecast shows dry conditions from May 4th through May 6th with dropping humidity, which should progressively dry the crag.
The E/NE-facing aspect loses direct sun by early afternoon, slowing drying rates compared to south or west-facing crags.
Recommendations
3
- Do not climb today — the crag is wet from 11.4mm of rain and conditions are unsafe for friction-dependent volcanic rock.
- Consider visiting from May 5th onwards when two full dry days and dropping humidity should have cleared surface moisture from open faces, though check seepage lines on arrival.
- Check the MWIS (Mountain Weather Information Service) Lake District forecast before committing to the long approach, as valley conditions are not representative of conditions at 600m.
Do Not Climb
90%
4 days ago
Dow Crag is currently wet and unsafe for climbing. Today has seen 11.7mm of rain with 94% humidity at altitude, following a wet period that included nearly 100mm in the last 28 days — the rock will be thoroughly soaked with active seepage lines running across the buttresses.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Dow Crag's five buttresses are laced with seepage lines that activate readily after heavy rain and can take several dry days to clear, especially on the deeper gully walls between buttresses.
- The E/NE aspect means the crag loses direct sun by early afternoon, significantly slowing drying of the upper pitches and north-facing corners on Buttresses A and B.
- At 600m the crag is frequently in cloud even when valleys are clear — today's 94% humidity strongly suggests the crag is enveloped in mist, keeping surfaces saturated.
- The 60+ minute approach via Walna Scar road means committing to conditions hours before reaching the crag — turning back wastes a significant part of the day.
Warnings
3
- The crag is almost certainly in cloud today with active rain — conditions are dangerous for multi-pitch climbing at altitude.
- Overnight temperatures are forecast to drop below freezing later this week (down to -1.8°C on May 7th), which could create verglas on wet rock surfaces at 600m.
- The long approach means weather can deteriorate significantly between leaving the valley and reaching the crag — always carry full mountain kit.
Reasoning
With 11.7mm of rain today on top of 3.6mm over the previous two days and nearly 100mm in the last month, the rock surface will be actively wet with running seepage lines across all buttresses.
No drying has occurred today given continuous rain and 94% humidity; the NE wind direction is blowing directly onto the face, and at 600m altitude the crag is almost certainly in cloud.
Rhyolite/BVS rock is non-porous and does not suffer structural damage when wet, so hold breakage is not a concern — the risk is entirely friction loss on greasy surfaces.
Early May at 600m in the Lakes is still marginal spring season; overnight temperatures are dropping near freezing in the forecast, and residual dampness in cracks and on ledges can persist for days at this altitude.
Contributing Factors
6
11.7mm of rain today has thoroughly wetted all rock surfaces and recharged seepage lines across the buttresses.
94% humidity at altitude almost certainly means the crag is in cloud with zero evaporative drying potential.
Nearly 100mm in the past 28 days means the ground is saturated and seepage will be persistent even after surface drying begins.
The NE wind is blowing directly onto the E/NE-facing crag, driving moisture onto the rock rather than aiding evaporation.
BVS rhyolite does not absorb water so will begin surface drying relatively quickly once rain stops and humidity drops.
The exposed position normally aids drying, but today's wind direction and high humidity negate this advantage.
Recommendations
3
- Do not attempt Dow Crag today — the rock is actively wet and dangerously slippery on all buttresses.
- Wait for at least 1–2 full dry days with lower humidity before considering a visit; monitor MWIS or Met Office mountain forecast for the Coniston Fells specifically.
- If visiting later this week, target the morning when the E-facing aspect catches sun, and be prepared for seepage on the deeper gully routes between buttresses.
Do Not Climb
75%
4 days ago
Dow Crag received 8.2mm of rain today with 93% humidity and a NE wind blowing directly onto the face — the rock will be wet and greasy right now. Although a good dry spell preceded this (10 consecutive dry days from April 21–30), the recent return of rain on May 1–3 (totalling ~12mm) has re-wetted the crag, and at 600m with high humidity the NE-facing buttresses will not dry quickly.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Dow Crag's extensive seepage lines on buttresses B and C will be actively running after today's 8.2mm rain combined with 3.6mm over the previous two days, and these can persist for days at this altitude.
- The NE wind today blows directly onto the east/NE-facing buttresses, driving moisture into the rock surface and preventing effective drying — this is the worst wind direction for this crag.
- At 600m the crag is very likely in cloud today given 93% humidity and 8.9°C temperatures, meaning condensation will be actively depositing moisture even where rain hasn't directly wetted the rock.
- The long 60+ minute approach means conditions cannot be easily re-assessed mid-day; committing to the walk-in today carries a high risk of finding unclimbable conditions on arrival.
Warnings
2
- Dow Crag is a serious mountain venue at 600m — do not rely on valley weather; check MWIS or mountain-specific forecasts before committing to the long approach.
- Overnight frost is forecast from May 6–7 (down to -1.8°C) which could leave verglas on ledges and in cracks — be prepared for winter-like conditions at the crag.
Reasoning
The rock is currently wet from 8.2mm of rain today on top of light rain on May 1 and May 2, with 93% humidity ensuring no evaporative drying is occurring.
The NE wind at 22 km/h is blowing directly onto the east-facing aspect, which in this case hinders drying by driving moist air onto the face; meaningful drying cannot begin until humidity drops and wind shifts.
Non-porous BVS rhyolite is not at risk of structural damage when wet, but friction on this rock type drops dramatically when damp, making multi-pitch trad routes at altitude a serious safety concern.
Early May at 600m is still marginal — temperatures are cool (max 8.9°C today), overnight frost is forecast later this week (down to -1.8°C), and the crag can still hold ice on ledges and in cracks at this time of year.
Contributing Factors
6
Significant rainfall today has thoroughly wetted the entire crag surface, with seepage lines now actively flowing.
Near-saturation humidity prevents any evaporative drying and the crag is very likely shrouded in cloud at 600m.
Wind is blowing moist air directly onto the climbing face, the worst possible direction for drying this aspect.
The excellent 10-day dry spell from April 21–30 has been negated by three consecutive days of rain totalling ~12mm.
Mountain-level conditions mean lower temperatures, persistent cloud, and much slower drying than valley crags.
BVS rhyolite does not absorb water so will dry relatively quickly once rain stops and humidity drops — no structural damage risk.
Recommendations
3
- Do not climb today — the crag is wet, likely in cloud, and conditions are unsuitable for safe climbing on multi-pitch mountain routes.
- Monitor conditions for tomorrow (May 4): if humidity drops below 80% and the crag clears of cloud, the non-porous rock could dry sufficiently on wind-exposed buttresses by late morning, but assess on arrival.
- The best window this week looks to be May 6 after two days of minimal rain and dropping humidity (67%), though overnight frost may leave ice on ledges — target late morning starts.
Do Not Climb
35%
5 days ago
Dow Crag has received 2.6mm of rain today with 90% humidity, breaking a good dry spell; the rock surface will be wet and greasy. With further rain forecast tomorrow (6mm) and unsettled conditions ahead, this is not a good window for a high mountain crag at 600m.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Dow Crag's extensive seepage lines — particularly on buttresses B and C — reactivate quickly after even moderate rain following the heavy cumulative rainfall earlier in April (103mm in 28 days).
- The E/NE aspect means the crag loses direct sun by early afternoon, and today's westerly wind blows onto the sheltered face, reducing its drying benefit significantly.
- At 600m the crag is very likely in cloud today given 90% humidity and 10.8°C max — condensation on the rock surface will compound the rainfall and prevent drying.
- The long 60+ minute approach means conditions can deteriorate significantly between leaving the valley and arriving at the crag; valley conditions are not representative of conditions at height.
Warnings
2
- Dow Crag at 600m is a serious mountain venue — do not rely on valley weather; check MWIS or Met Office mountain forecast before setting out.
- Wet BVS rock is extremely slippery; multi-pitch falls on this crag have serious consequences with limited rescue access.
Reasoning
The rock is currently wet from 2.6mm of rain today combined with 90% humidity, and the preceding dry spell (April 21–30) will have cleared deeper seepage but today's rain has re-wetted all surfaces.
With westerly wind blowing onto the sheltered east face, high humidity (90%), and likely cloud engulfment at 600m, meaningful drying today is very unlikely.
Borrowdale Volcanic rhyolite is non-porous and structurally unaffected by moisture — the risk is purely friction-related and climber safety on this serious mountain venue.
Early May in the Lake District is transitional; temperatures at 600m will be several degrees below valley readings, and the unsettled forecast with rain on 3 of the next 5 days limits drying windows.
Contributing Factors
7
2.6mm fell both today and yesterday (May 1), meaning the rock surface is currently wet with zero consecutive dry days.
90% humidity at valley level almost certainly means the crag at 600m is in cloud, with condensation preventing any drying.
Nine consecutive dry days (April 21–30) before the current rain will have drained deeper seepage systems, meaning recovery should be faster once rain stops.
Today's westerly wind hits the back of the east-facing crag, providing minimal airflow across the climbing face to aid drying.
103mm over 28 days represents a very wet April, and while the late-month dry spell helped, groundwater levels remain elevated which feeds seepage lines.
6mm is forecast for May 3 with 91% humidity, meaning conditions will worsen before they improve.
BVS rhyolite does not absorb water or weaken structurally, so once surface moisture evaporates the rock will climb well.
Recommendations
3
- Do not climb today — the crag is wet and likely in cloud; wait for a sustained dry window.
- The next realistic opportunity is May 4 (forecast dry, 78% humidity) but verify mountain-level conditions before committing to the long approach.
- Consider lower-altitude alternatives in the Coniston area or Langdale that dry faster and are less likely to be in cloud.
Marginal — Assess Conditions
65%
6 days ago
After an exceptional 10-day dry spell (April 20–30) following a very wet April, the rock at Dow Crag should be substantially dry, but today's 1.9mm of rain and rising humidity introduce some uncertainty. The east/NE aspect and 600m altitude mean the light rain today may linger on the surface, and tomorrow's forecast looks damp — a visual check on arrival is essential.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Dow Crag's extensive seepage lines can remain active for days after prolonged wet weather, but the 10-day dry spell from April 20–30 should have largely cleared these; today's light rain is unlikely to reactivate deep seepage.
- The east-facing aspect means morning sun reaches the crag but is lost by early afternoon — any surface moisture from today's rain will dry best in the morning hours.
- At 600m, the crag may be in cloud today with 66% valley humidity translating to near-saturation conditions at altitude; the southerly wind is not ideally directed to dry the E/NE-facing rock.
- The long 60+ minute approach means conditions can change significantly between the valley and the crag — what looks dry in Coniston may be damp or misty at Goat's Water.
Warnings
2
- Check BMC RAD for bird nesting restrictions at Dow Crag — peregrine and raven restrictions may be active on certain buttresses in May.
- Mountain weather at 600m can differ dramatically from valley conditions; carry full mountain gear and be prepared for the long retreat if conditions deteriorate.
Reasoning
The 10 consecutive dry days (April 20–30) with low humidity and moderate winds will have thoroughly dried the non-porous volcanic rock, but today's 1.9mm rain has re-wetted the surface and the crag may currently be damp.
Today's southerly wind at ~21 km/h provides moderate exposure but is not optimally directed for the E/NE-facing rock; with valley humidity at 66% (likely higher at 600m) and only moderate temperatures, surface drying from today's rain will be slow through the afternoon.
Non-porous BVS volcanic rock faces no structural risk from moisture — the concern is purely friction loss on wet or damp surfaces, which is significant on Dow's slabby and technical routes.
Early May is a reasonable time for high mountain crags but conditions remain changeable; bird nesting restrictions should be checked on the BMC RAD, and temperatures at 600m will be noticeably cooler than the valley.
Contributing Factors
6
Ten consecutive dry days (April 20–30) with humidity dropping as low as 36% will have thoroughly dried the rock and cleared seepage lines from the earlier wet period.
1.9mm of rain today has re-wetted the rock surface, breaking the dry spell and introducing surface moisture that may not fully clear given the afternoon shade on this E/NE aspect.
At 600m with rising humidity (66% in the valley, likely 85–95% at the crag), the crag may be in cloud or mist, keeping surfaces damp even where rain is light.
The exposed position generally aids drying, though today's southerly wind is not ideally oriented for the E/NE-facing buttresses.
BVS volcanic rock does not absorb water, so only surface moisture needs to evaporate — no extended internal drying period is required after a light shower.
Tomorrow (May 2) shows 0.8mm precipitation with 93% humidity, suggesting conditions will not improve and may deteriorate before the heavier rain on May 3.
Recommendations
3
- If climbing today, start early to exploit the morning sun on the east-facing buttresses and be prepared to retreat if surfaces feel greasy or the crag enters cloud.
- Check seepage lines carefully on arrival — particularly on buttresses B and C which can hold moisture in their gully systems — and choose routes on drier, more exposed buttresses if possible.
- Consider waiting until May 5 or 6 when the forecast shows a drier, clearer window after the May 3 rain clears through.
Likely Safe to Climb
88%
9 days ago
Dow Crag has had 9 consecutive dry days with an extended period of easterly winds directly impacting the E/NE-facing rock, low humidity (56% today), and warming temperatures up to 15°C. The non-porous volcanic rock should be thoroughly dry, including seepage lines, after this prolonged dry and breezy spell.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sustained easterly wind over the past week blows directly onto the E/NE-facing buttresses, which is unusually effective at drying this normally slow-to-dry aspect — a rare and favourable alignment.
- Dow Crag's extensive seepage lines (especially on B and C Buttresses) can persist for days after heavy rain, but 9 dry days with moderate winds should have cleared even the most stubborn drainage channels.
- At 600m altitude the crag may still be in cloud during early morning despite clear valley conditions — check the MWIS Lake District forecast and be prepared to retreat if cloud rolls in and dampens surfaces.
- April bird nesting restrictions may apply to some buttresses — check BMC RAD for current peregrine closures before planning your route.
Warnings
1
- Be prepared to retreat if cloud descends — condensation on the rock at 600m can make volcanic rock dangerously slippery within minutes.
Reasoning
Nine consecutive dry days, dropping humidity (56% today, averaging 61% over the week), and persistent easterly winds directly onto the face mean surface moisture and seepage lines should be fully evaporated.
The E/NE aspect has been receiving direct wind from the prevailing easterly direction for 7+ days at 16–40 km/h, providing exceptional drying for this normally sheltered and slow-drying face; combined with low humidity this is highly effective.
Borrowdale Volcanic rock is non-porous and does not suffer structural weakening when wet; there is no freeze-thaw concern with overnight lows staying above 0°C in recent days.
Late April is early season for a 600m mountain crag, but the current warm spell (up to 15.9°C) and extended dry period provide unusually good spring conditions; daylight hours are adequate for long multi-pitch routes.
Contributing Factors
6
No measurable precipitation since April 20 (2.9mm), with the last significant rain on April 17–18, giving ample time for even seepage lines to clear.
Sustained easterly winds at 17–40 km/h over the past week blow directly onto the crag's east-facing buttresses, dramatically accelerating drying of this normally slow-drying aspect.
Humidity at 56% today and averaging 61% over the past week is unusually low for this altitude, supporting rapid evaporation.
Temperatures reaching 13–16°C over recent days are well above average for 600m in April, aiding evaporation and reducing any residual dampness.
132.5mm fell in the preceding 28 days, but the 9-day dry spell with favourable drying conditions has been sufficient for non-porous rock to shed this moisture.
At 600m the crag can be enveloped in cloud unexpectedly, which could dampen surfaces even on an otherwise dry day — but current low humidity and clear skies reduce this risk.
Recommendations
3
- Conditions are excellent for Dow Crag — head up with confidence but carry a shell layer as mountain weather can change rapidly at 600m.
- Start early to maximise the morning sun on the east-facing buttresses; the crag loses direct sunlight by early afternoon.
- Check BMC RAD for any active nesting restrictions on specific buttresses before committing to the long approach.
Climbing Outlook