Llangollen · climbing crag beta

Trevor Rocks climbing conditions.

Aspect-aware crag drying, rain and exposed-wind guidance for limestone climbing.

Saturday 29 August 2026

Poor.

Rain is likely to wet the crag during the climbing window.

12/100
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

Main escarpment

28/100

Thunder risk increases the seriousness of exposed climbing.

Rock surface
Wet or seeping
Recent rain
12.6 mm / 24 h
Climbing-window rain
1.4 mm
Face wind / gust
7 / 14 mph
Above-crag gust
16 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?

A broad sector and surface report is enough; no route-level claim is needed.

PoorRain is likely to wet the crag during the climbing window.12/100
356 m · representative sector

Main escarpment

12/100

Rain is likely to wet the crag during the climbing window.

Rock surface
Wet or seeping
Recent rain
1.4 mm / 24 h
Climbing-window rain
10.0 mm
Face wind / gust
5 / 10 mph
Above-crag gust
13 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 15 mph.

Wet or seeping sections are likely; choose another crag or wait for direct observations.

Did this match the crag?

A broad sector and surface report is enough; no route-level claim is needed.

PoorThunder risk increases the seriousness of exposed climbing.21/100
356 m · representative sector

Main escarpment

21/100

Thunder risk increases the seriousness of exposed climbing.

Rock surface
Wet or seeping
Recent rain
13.8 mm / 24 h
Climbing-window rain
2.5 mm
Face wind / gust
8 / 17 mph
Above-crag gust
19 mph
Best drying window
3 p.m.–5 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?

A broad sector and surface report is enough; no route-level claim is needed.

PoorThunder risk increases the seriousness of exposed climbing.37/100
356 m · representative sector

Main escarpment

37/100

Thunder risk increases the seriousness of exposed climbing.

Rock surface
Wet or seeping
Recent rain
3.9 mm / 24 h
Climbing-window rain
1.2 mm
Face wind / gust
11 / 19 mph
Above-crag gust
24 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?

A broad sector and surface report is enough; no route-level claim is needed.

PoorThunder risk increases the seriousness of exposed climbing.38/100
356 m · representative sector

Main escarpment

38/100

Thunder risk increases the seriousness of exposed climbing.

Rock surface
Wet or seeping
Recent rain
1.2 mm / 24 h
Climbing-window rain
0.9 mm
Face wind / gust
9 / 17 mph
Above-crag gust
19 mph
Best drying window
5 p.m.–7 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?

A broad sector and surface report is enough; no route-level claim is needed.

PoorThunder risk increases the seriousness of exposed climbing.39/100
356 m · representative sector

Main escarpment

39/100

Thunder risk increases the seriousness of exposed climbing.

Rock surface
Wet or seeping
Recent rain
4.2 mm / 24 h
Climbing-window rain
0.7 mm
Face wind / gust
12 / 22 mph
Above-crag gust
24 mph
Best drying window
2 p.m.–5 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?

A broad sector and surface report is enough; no route-level claim is needed.

PromisingRecent rain leaves some drying uncertainty.82/100
356 m · representative sector

Main escarpment

82/100

Recent rain leaves some drying uncertainty.

Rock surface
Drying; check at the crag
Recent rain
1.2 mm / 24 h
Climbing-window rain
0.0 mm
Face wind / gust
5 / 10 mph
Above-crag gust
11 mph
Best drying window
No clear drying window
Greasy-rock risk
Moderate

Wind: The cliff face and open ground above have broadly similar wind exposure.

Drying is plausible, but confirm the rock at the crag before committing.

Did this match the crag?

A broad sector and surface report is enough; no route-level claim is needed.

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.