Mountain Weather

Binnein Shuas (Ardverikie Wall)

Trad climbing conditions · Loch Laggan · Microgranite · New service · Give us feedback

Poor

10/100

Rain is indicated during the climbing window and may wet exposed rock.

565 m · representative sector

Crag-wide signal

Rock surface
Wet or seeping
Recent rain
2.4 mm / 24 h
Climbing-window rain
8.5 mm
Face wind / gust
17 / 33 mph
Above-crag gust
35 mph
Best drying window
No clear drying window
Greasy-rock risk
High
Midge risk at belays
Low · 1/100

Sun and shade

Little direct sunshine is expected at the face. Little sunshine is expected above the crag either.

Sun at the face
About 0.0 hours
Sun above the crag
About 0.0 hours

Approximate sunshine from 08:00 until sunset (about 20:01), allowing for cloud and nearby hills. Individual routes and belays may differ.

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 cliff face and open ground above have broadly similar wind exposure. A precomputed terrain-flow profile refines how the face shelter changes with wind direction. The face is broadly most sheltered in northwesterly flow and most exposed in southerly flow.

Midges: Forecast conditions are generally unfavourable for midge activity on the face, though the most sheltered corners may differ. The breeze should suppress them on exposed ground, but sheltered pockets may differ. Rain in the preceding three days may leave wetter habitat. Cloudier conditions favour activity.

Wet rock or seepage-prone sections are a concern; 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.

Forecast generated 5 September 2026 at 11:21 UTC. Weather input cached 5 September 2026 at 11:21 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

Microgranite still needs an on-arrival check.

Generally grippy when dry and often still positive when damp, but wet slabs, lichen, polish and drainage lines can remain slippery. 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.

A representative climbing-face direction has been checked against a published crag description, but the named point does not resolve individual sectors, route boundaries or exact belay positions. Forecast-grid weather and representative sector geometry only. Check live access information and touch-test the rock before climbing.

Official access advice: Mountaineering Scotland. 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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