Poor.
Thunder risk increases the seriousness of exposed climbing.
Llangollen · climbing crag beta
Trevor Rocks climbing conditions.
Aspect-aware crag drying, rain and exposed-wind guidance for limestone climbing.
28/100
Seven-day outlook
Trevor Rocks day by day.
The headline stays short. Expand a day to compare recent rain, drying windows, surface state and the wind on the climb with more exposed ground above.
PoorThunder risk increases the seriousness of exposed climbing.28/100+
356 m · representative sector
28/100Main escarpment
Thunder risk increases the seriousness of exposed climbing.
- Rock surface
- Wet or seeping
- Recent rain
- 6.5 mm / 24 h
- Climbing-window rain
- 2.2 mm
- Face wind / gust
- 7 / 15 mph
- Above-crag gust
- 17 mph
- Best drying window
- No clear drying window
- Greasy-rock risk
- High
Wind: The cliff face and open ground above have broadly similar wind exposure.
Wet or seeping sections are likely; choose another crag or wait for direct observations.
Did this match the crag?
PoorA small but credible thunder risk needs watching on exposed routes.17/100+
356 m · representative sector
17/100Main escarpment
A small but credible thunder risk needs watching on exposed routes.
- Rock surface
- Wet or seeping
- Recent rain
- 3.4 mm / 24 h
- Climbing-window rain
- 6.6 mm
- Face wind / gust
- 8 / 15 mph
- Above-crag gust
- 17 mph
- Best drying window
- No clear drying window
- Greasy-rock risk
- High
Wind: The cliff face and open ground above have broadly similar wind exposure.
Wet or seeping sections are likely; choose another crag or wait for direct observations.
Did this match the crag?
PossibleRecent rain leaves some drying uncertainty.68/100+
356 m · representative sector
68/100Main escarpment
Recent rain leaves some drying uncertainty.
- Rock surface
- Damp or patchy
- Recent rain
- 6.6 mm / 24 h
- Climbing-window rain
- 0.0 mm
- Face wind / gust
- 10 / 17 mph
- Above-crag gust
- 19 mph
- Best drying window
- 2 p.m.–3 p.m.
- Greasy-rock risk
- High
Wind: The cliff face and open ground above have broadly similar wind exposure.
Some sectors may be usable, but shaded, polished or seeping sections could remain poor.
Did this match the crag?
PoorRain is likely to wet the crag during the climbing window.22/100+
356 m · representative sector
22/100Main escarpment
Rain is likely to wet the crag during the climbing window.
- Rock surface
- Wet or seeping
- Recent rain
- 6.0 mm / 24 h
- Climbing-window rain
- 4.8 mm
- Face wind / gust
- 8 / 15 mph
- Above-crag gust
- 17 mph
- Best drying window
- 2 p.m.–6 p.m.
- Greasy-rock risk
- High
Wind: The cliff face and open ground above have broadly similar wind exposure.
Wet or seeping sections are likely; choose another crag or wait for direct observations.
Did this match the crag?
PossibleRecent rain leaves some drying uncertainty.69/100+
356 m · representative sector
69/100Main escarpment
Recent rain leaves some drying uncertainty.
- Rock surface
- Damp or patchy
- Recent rain
- 4.8 mm / 24 h
- Climbing-window rain
- 0.0 mm
- Face wind / gust
- 7 / 15 mph
- Above-crag gust
- 17 mph
- Best drying window
- No clear drying window
- Greasy-rock risk
- High
Wind: The cliff face and open ground above have broadly similar wind exposure.
Some sectors may be usable, but shaded, polished or seeping sections could remain poor.
Did this match the crag?
PromisingThe broad weather signal favours dry rock.95/100+
356 m · representative sector
95/100Main escarpment
The broad weather signal favours dry rock.
- Rock surface
- Probably dry
- Recent rain
- 0.0 mm / 24 h
- Climbing-window rain
- 0.0 mm
- Face wind / gust
- 11 / 17 mph
- Above-crag gust
- 19 mph
- Best drying window
- No clear drying window
- Greasy-rock risk
- Low
Wind: The cliff face and open ground above have broadly similar wind exposure.
The broad weather signal favours dry rock; local seepage and route-level dampness remain possible.
Did this match the crag?
PoorRain is likely to wet the crag during the climbing window.5/100+
356 m · representative sector
5/100Main escarpment
Rain is likely to wet the crag during the climbing window.
- Rock surface
- Wet or seeping
- Recent rain
- 0.6 mm / 24 h
- Climbing-window rain
- 22.2 mm
- Face wind / gust
- 8 / 22 mph
- Above-crag gust
- 25 mph
- Best drying window
- No clear drying window
- Greasy-rock risk
- High
Wind: Wind is somewhat stronger on open ground above the crag, where gusts reach about 25 mph.
Wet or seeping sections are likely; choose another crag or wait for direct observations.
Did this match the crag?
Use it as a starting signal
Limestone still needs an on-arrival check.
The forecast combines recent and expected rain with broad drying, humidity, dew and wind signals. The climb and open ground above the crag are treated separately where the mapped face gives useful shelter context.
Reviewed OSM cliff ways and broad face aspects, not route boundaries, exact belay positions or a climbing topo. Forecast-grid weather and representative sector geometry only. Check live access information and touch-test the rock before climbing.
Access: Check current landowner and BMC access information, seasonal restrictions and local notices before travelling.