Mountain Weather

Avon Gorge

Sport and trad climbing conditions · Bristol · Limestone · New service · Give us feedback

Promising

95/100

The broad weather signal favours dry rock.

30 m · representative sector

Crag-wide signal

Rock surface
Probably dry
Recent rain
0.0 mm / 24 h
Climbing-window rain
0.0 mm
Face wind / gust
6 / 13 mph
Above-crag gust
18 mph
Best drying window
8 a.m.–6 p.m.
Greasy-rock risk
Low

Sun and shade

About 11.0 hours of general sunshine from 8 a.m. until sunset (about 7:48 p.m.). Local sun and shade are not resolved, so no face-specific estimate is shown.

How we estimate sun and shade

We use a digital elevation model (a 3D map of the land), the sun's position and the direction the crag faces to estimate when nearby hills or the face itself block the sun. Forecast sunshine and cloud then help estimate how much sunshine is likely. Where terrain or face-direction data are missing, we show general sunshine only.

Vegetation is not mapped in detail, and we cannot resolve small rock features, ledges or overhangs. Hills beyond the sampled 2 km can also change local shade. Sunshine does not guarantee dry or ice-free rock.

Wind, rain and daily score: 08:00–18:00 local time.

Experimental wind estimate: Shelter at individual holds and belays is unresolved. Strong gusts may differ substantially; summit-station validation does not establish crag-level accuracy.

Wind: The mapped crag point does not resolve the cliff face, so shelter on the climb is uncertain. Open ground above may be more exposed, with gusts around 18 mph. A precomputed terrain-flow profile refines how the face shelter changes with wind direction.

The broad weather signal favours dry rock; local seepage and route-level dampness remain possible.

Did this match the crag?

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

Forecast generated 5 September 2026 at 08:43 UTC. Weather input cached 5 September 2026 at 08:43 UTC. Includes Mountain Weather rock and exposure estimates. This is a build time, not a single model-run time.

Weather data: Open-Meteo (CC BY 4.0). Adapted by Mountain Weather.

Use it as a starting signal

Limestone still needs an on-arrival check.

Usually positive where it is rough and dry, but polished limestone can become very slippery when wet and seepage may linger. Broad crag-level rock context; individual sectors and routes may cross different rock, polish, lichen, superficial deposits or seepage.

Rain is model-grid precipitation, including any snow as water equivalent; nearby crags can share it. Aspect and terrain refine wind and drying, not cliff-by-cliff rainfall or rain shadows.

Crag drying and sheltered-wind estimates have not yet been validated against crag-level observations. Published summit checks are not a validation of low crags, woodland or individual belays.

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.

General gorge conditions across differently oriented walls. Individual sport quarries and trad buttresses need separate geometry before face-specific shelter or sunshine can be estimated. Forecast-grid weather and representative sector geometry only. Check live access information and touch-test the rock before climbing.

Official access advice: BMC Regional Access Database. We link to the source without reproducing its access notes or restrictions. Check it before travel; no endorsement or partnership is implied.

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