Ruadh-stac Beag weather forecast.

896 m summit forecast for wind, cloud, rain and temperature. Updated from the Thursday 6 August 2026 model run.

Seven-day Ruadh-stac Beag forecast.

Conditions can change quickly with height. Use the day-by-day summit detail below, then check again close to departure.

High confidence
Wind32 mph W Gusts45 mph Feels-2°C Rain1.6 mm Cloud base593 m Freezing level1,860 m

A grey, cloudy day on Ruadh-stac Beag: summit wind broadly 15-35 mph, with gusts 40-50 mph during the evening (gale-force winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base 500-1100 m - the top is likely to drift in and out of cloud, with the best chance of a view from the morning into the afternoon. Cloud will be lowest on the W slopes, down to about 500-800 m; the E side should be clearer, lifting to around 700-1000 m. Some rain is likely, with up to around 2 mm indicated; timing and local totals remain uncertain. Cold on top: air temperature broadly 2 to 6°C, feeling around -4 to 0°C in the wind - wrap up.

Medium confidence
Wind53 mph SW Gusts74 mph Feels-0°C Rain29.3 mm Cloud base584 m Freezing level2,070 m

A rough, clagged-in day on Ruadh-stac Beag: summit wind broadly 45-60 mph, with gusts 70-80 mph during the evening (storm-force winds). Much calmer lower down - generally 15-25 mph in the valley, rising towards the tops. Cloud base 500-800 m - expect the top to stay in cloud for most or all of the day, with no dependable break. Cloud will be lowest on the SW slopes, down to about 400-700 m; the NE side should be clearer, lifting to around 800-1100 m. A persistently wet day is possible, with around 20-40 mm indicated; local totals could vary considerably. Cold on top: air temperature broadly 4 to 8°C, feeling around -2 to 2°C in the wind - wrap up. Confidence moderate (ensemble members show a moderate spread) - the summit peak could reasonably be 37-60 mph, so treat the headline as mid-range.

Medium confidence
Wind54 mph SW Gusts75 mph Feels3°C Rain34.2 mm Cloud base511 m Freezing level2,540 m

A rough, clagged-in day on Ruadh-stac Beag: summit wind broadly 45-60 mph, with gusts 70-80 mph during the evening (storm-force winds). Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base 500-800 m - expect the top to stay in cloud for most or all of the day, with no dependable break. Cloud will be lowest on the SW slopes, down to about 300-600 m; the NE side should be clearer, lifting to around 800-1100 m. A persistently wet day is possible, with around 20-40 mm indicated; local totals could vary considerably. Confidence moderate (ensemble members show a moderate spread) - the summit peak could reasonably be 37-62 mph, so treat the headline as mid-range.

Low confidence
Wind42 mph W Gusts59 mph Feels1°C Rain3.1 mm Cloud base751 m Freezing level10,000 m

A wild day on Ruadh-stac Beag: summit wind broadly 25-45 mph, with gusts 55-65 mph early in the morning (storm-force winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base 400-1500 m - the top is likely to drift in and out of cloud, with the best chance of a view from the morning into the afternoon. The cloud base is very changeable today - it could sit much higher or lower than that at times, so read the sky. Cloud will be lowest on the W slopes, down to about 600-900 m; the E side should be clearer, lifting to around 900-1200 m. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Cold on top: air temperature broadly 4 to 8°C, feeling around -2 to 2°C in the wind - wrap up. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 25 to 54 mph; check again nearer the time.

Low confidence
Wind13 mph NW Gusts17 mph Feels2°C Rain0.6 mm Cloud base1,246 m Freezing level10,000 m

A mixed day on Ruadh-stac Beag: summit wind broadly 5-20 mph, with gusts 10-20 mph early in the morning (a moderate breeze). Cloud base 500-1600 m - the top is likely to drift in and out of cloud, with the best chance of a view from the morning into the evening. The cloud base is very changeable today - it could sit much higher or lower than that at times, so read the sky. Little or no rain expected. Cold on top: air temperature broadly 4 to 8°C, feeling around 0 to 4°C in the wind - wrap up. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 6 to 20 mph; check again nearer the time. 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.

Low confidence
Wind27 mph S Gusts37 mph Feels6°C Rain0.0 mm Cloud base2,033 m Freezing level10,000 m

A mixed day on Ruadh-stac Beag: summit wind broadly 10-30 mph, with gusts 30-40 mph during the evening (strong winds). Much calmer lower down - generally 0-10 mph in the valley, rising towards the tops. Any cloud sits well above the tops (base 1100-3200 m) - clear summits. Little or no rain expected. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 17 to 42 mph; check again nearer the time. 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.

Low confidence
Wind43 mph S Gusts60 mph Feels6°C Rain3.9 mm Cloud base784 m Freezing level10,000 m

A wild day on Ruadh-stac Beag: summit wind broadly 35-50 mph, with gusts 55-65 mph around midday (storm-force winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base 700-1500 m - the top is likely to drift in and out of cloud, with the best chance of a view from late afternoon into the evening. The cloud base is very changeable today - it could sit much higher or lower than that at times, so read the sky. Cloud will be lowest on the S slopes, down to about 600-900 m; the N side should be clearer, lifting to around 1000-1300 m. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 23 to 68 mph; check again nearer the time.

Forecast run: 2026-08-06

A forecast is part of the decision.

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.