763 m summit forecast for wind, cloud, rain and temperature. Updated 25 August 2026 at 15:32 UTC.
Little Wyvis on Tuesday 25 August 2026: summit wind around 17 mph SE, gusting 23 mph; modelled cloud-free summit for 79% of daylight; feels like 6°C; 0.0 mm rain.
Conditions can change quickly with height. Use the day-by-day summit detail below, then check again close to departure.
Cloud-free timing: Cloudy early, clearing later.
A fine day on Little Wyvis: summit wind broadly 5-20 mph, with gusts 20-30 mph during the evening (fresh and blowy). Little or no rain expected.
Cloud-free timing: Cloudy early, clearing later.
A mixed day on Little Wyvis: summit wind broadly 15-30 mph, with gusts 35-45 mph during the evening (strong winds). Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Any cloud sits well above the tops (base 800-1100 m) - clear summits. Little or no rain expected. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 24-30 mph, so treat the headline as mid-range.
from around midday into the evening. Leave exposed summits and ridges if thunder develops.
Cloud-free timing: Around 67% early, falling to around 20% later.
A mixed day on Little Wyvis: summit wind broadly 5-25 mph, with gusts 20-30 mph early in the morning (fresh and blowy). Thunder watch from around midday into the evening: a small but credible risk is present. Watch for growing clouds and leave exposed tops if thunder develops. Cloud base around 100–400 m in the morning, then around 1900–2200 m around midday and 700–1000 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view during the morning. Little or no rain expected.
Forecast confidence: Thunderstorm timing is inherently uncertain and may shift by several hours.
from around midday into the evening. Leave exposed summits and ridges if thunder develops.
Cloud-free timing: Around 0% early, improving to around 20% later.
A grey, cloudy day on Little Wyvis: summit wind broadly 5-20 mph, with gusts 20-30 mph during the evening (fresh and blowy). A meaningful thunderstorm risk is indicated from around midday into the evening. Avoid committing to exposed ridges if storms begin to build. Cloud base around 400–700 m in the morning, then around 900–1200 m around midday and 400–700 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view from midday into the afternoon. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain.
Forecast confidence: A low thunderstorm risk remains difficult to time precisely.
from around midday into the evening. Leave exposed summits and ridges if thunder develops.
A grey, cloudy day on Little Wyvis: summit wind broadly 5-20 mph, with gusts 15-25 mph early in the morning (fresh and blowy). Thunderstorms are possible from around midday into the evening. Keep an escape route from exposed ridges and descend if thunder develops. Cloud base around 400–700 m in the morning, then around 600–900 m around midday and 400–700 m by late afternoon. Expect the top to stay in cloud for most or all of daylight, with no dependable break. Some rain is likely, with around 5-10 mm indicated; timing and local totals remain uncertain. Cloud base is the least certain part of this - the models are only moderately agreed, so it could sit a couple of hundred metres either way.
Forecast confidence: A low thunderstorm risk remains difficult to time precisely.
from the morning into the afternoon. Leave exposed summits and ridges if thunder develops.
A rough, clagged-in day on Little Wyvis: summit wind broadly 5-15 mph, with gusts 10-20 mph during the evening (a moderate breeze). Thunderstorms are possible from the morning into the afternoon. Keep an escape route from exposed ridges and descend if thunder develops. Cloud base around 0-300 m in the morning, lifting to 400-700 m around midday. Expect the top to stay in cloud for most or all of daylight, with no dependable break. A persistently wet day is possible, with around 5-10 mm indicated; local totals could vary considerably. Treat the cloud base with caution - the models disagree on humidity, so it could be well above or below the figure given.
Forecast confidence: A low thunderstorm risk remains difficult to time precisely.
from early morning into the evening. Leave exposed summits and ridges if thunder develops.
A grey, cloudy day on Little Wyvis: summit wind broadly 10-35 mph, with gusts 35-45 mph during the evening (strong winds). Thunderstorms are possible from early morning into the evening. Keep an escape route from exposed ridges and descend if thunder develops. The ground is likely to be wet after recent rain. Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base mostly around 400–700 m through daylight. Expect the top to stay in cloud for most or all of daylight, with no dependable break. Some rain is likely, with up to around 2 mm indicated; timing and local totals remain uncertain. Confidence moderate (Summit wind could be roughly 14-35 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 14-35 mph, so treat the headline as mid-range.
Forecast run: 2026-08-25
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Mountain weather can differ sharply from conditions in the valley. Check official warnings, carry appropriate navigation and clothing, and be ready to change the plan. Read how Mountain Weather forecasts are produced and where their limits lie.