Poor
24Rock is likely to be wet or affected by seepage. Above the crag, exposed ground may see gusts near 46 mph. Wind may make exposed climbing uncomfortable.
Main crag
- Rock surface
- Wet or seeping
- Recent rain
- 0.4 mm / 24 h
- Climbing-window rain
- 0.9 mm
- Face wind / gust
- 19 / 28 mph
- Above-crag gust
- 46 mph
- Best drying window
- No clear drying window
- Greasy-rock risk
- High
- Midge risk at belays
- Low · 0
Recent rain and drying 0.4 mm / 24 h · 26.4 mm / 3 days · Dry spell: about 1 day
We estimate how quickly the rock may dry using the amount and timing of recent rain, then assess each following hour for sunshine, shade, wind, temperature and humidity. Rock type, seepage tendency, season and dew risk also affect the result. Sheltered holds and drainage lines can stay damp after exposed rock dries.
Past estimates at updateForecast at update
The dry-spell label counts time since an hour with at least 0.2 mm of modelled rain. Lighter traces remain visible in the chart. Rainfall is modelled, not measured at the crag. For a future climbing day, some or all of its preceding rain is still a forecast. Totals include snow as its equivalent amount of water. Times are local.
Shelter can reduce wind-driven rain, but also the breeze that helps rock dry. Rain totals are not reduced for face direction, and shelter never guarantees dry holds.
Why this score?
This is a weather-suitability score, not a percentage chance of dry rock or a dedicated bouldering-friction rating. Cold, dry conditions can suit friction but still make exposed climbing and belaying uncomfortable.
- Starting score
- 100.0 points
- Rock moisture, rain and dew
- -47.1 points
- Wind on the climb
- -19.9 points
- Cold conditions
- -0.2 points
- Extra wind above the crag
- -8.5 points
Starting at 100, we deduct for conditions that could spoil the session. Wind uses the larger deduction from sustained wind or gusts, not both added together. A small amount of forecast rain still counts even when the rock should dry quickly. The rain allowance only tops up the moisture deduction, so the same rain is not counted twice.
These are practical suitability weights, not measured probabilities or a safety rating. A high score does not guarantee dry holds or comfortable wind at every climb.
Light wind up to 10 mph carries no deduction. Above that, small comfort deductions build gradually. Where topping out or top-belaying is relevant, stronger wind above the crag also counts. Recent rain can leave a small allowance for damp patches even after good drying; this reduces with drying time and only tops up other moisture deductions.
Final score: 24. Contributions are rounded. Low scores are bounded at zero; conservation and weather warnings still apply. Midges are shown separately.
Surface drying does not rule out seepage. We use rain over the preceding 72 hours and a broad rock-type seepage allowance. We do not model individual cracks, peat drainage or river levels. Rock may remain wet along drainage lines after exposed surfaces dry.
- Rain in preceding 72 hours
- 26.4 mm
- Possible dew or condensation
- 8 hours
Rain history is modelled, not measured at the crag. Dew uses an estimated rock temperature. Tree shade is estimated broadly; wind and humidity beneath individual canopies are unresolved. These are broad signals, not observations of a particular route.
Sun and shade
About 0.0 hours of general sunshine from 08:00 until sunset (about 18:20). Local sun and shade are not resolved, so no face-specific estimate is shown.
Cold conditions may be uncomfortable, with slow drying.
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 face may offer some shelter from the southerly wind, but open ground above the crag is more exposed, with gusts around 46 mph. 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 easterly flow.
Midges: Forecast conditions are generally unfavourable for midge activity on the face, though the most sheltered corners may differ. Cool air is likely to limit flying, though warmer sheltered spots 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.
Season: Spring and autumn drying can remain slow when rock is cold, shaded or humid.
Wet rock or seepage may affect climbing. Choose another crag or wait for a reliable report of conditions. Cold, humid conditions and weak sun may leave shaded holds damp or greasy for longer.