Sàileag weather forecast.

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

Seven-day Sàileag forecast.

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

Medium confidence
Wind21 mph W Gusts29 mph Feels-1°C Rain0.1 mm Cloud-free summit56% Cloud base1,034 m Freezing level1,930 m Daylight05:28–21:24 · 15.9 h
Spate watch

There could be a spate risk based on recent rainfall. Burns and unbridged crossings may rise quickly. Most relevant now and for a few hours after the rain eases. Turn back if a crossing looks unsafe.

Cloud-free timing: Around 0% early, improving to around 67% later.

A mixed day on Sàileag: summit wind broadly 10-25 mph, with gusts 25-35 mph during the evening (fresh and blowy). 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 around 700-1000 m in the morning, lifting to 1000-1300 m around midday and 1300-1600 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view from around midday into the evening. Cloud is likely to hang lowest on western slopes; the eastern side should see somewhat higher bases and better breaks. Little or no rain expected. Cold on top: air temperature broadly 2 to 6°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 17-25 mph, so treat the headline as mid-range.

Low confidence
Wind37 mph SW Gusts52 mph Feels1°C Rain33.9 mm Cloud-free summit0% Cloud base564 m Freezing level2,100 m Daylight05:30–21:22 · 15.9 h
High spate risk

High spate risk based on forecast rainfall. Burns and unbridged crossings may become difficult or impassable. Most likely from around 00:00 until around 03:00. Turn back if a crossing looks unsafe.

A rough, clagged-in day on Sàileag: summit wind broadly 30-40 mph, with gusts 45-55 mph early in the morning (gale-force winds). The ground is likely to be wet after recent rain. High spate risk based on forecast rainfall. Burns and unbridged crossings may become difficult or impassable. Most likely from around 00:00 until around 03:00 the following day. Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base mostly around 500-800 m through daylight. Expect the top to stay in cloud for most or all of daylight, with no dependable break. Cloud is likely to hang lowest on southwestern slopes; the northeastern side should see somewhat higher bases and better breaks. 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. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 22 to 52 mph; check again nearer the time.

Low confidence
Wind42 mph SW Gusts59 mph Feels2°C Rain19.0 mm Cloud-free summit6% Cloud base518 m Freezing level2,650 m Daylight05:32–21:20 · 15.8 h
High spate risk

High spate risk based on forecast rainfall. Burns and unbridged crossings may become difficult or impassable. Most likely from around 05:00 until around 03:00. Turn back if a crossing looks unsafe.

A rough, clagged-in day on Sàileag: summit wind broadly 35-45 mph, with gusts 55-65 mph during the evening (storm-force winds). The ground is likely to be saturated after recent rain. Expect boggy paths and rapid runoff if more rain arrives. There could be a spate risk based on forecast rainfall. Burns and unbridged crossings may rise quickly. Most likely from around 05:00 until around 03:00 the following day. Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base around 700-1000 m in the morning, lowering to 500-800 m around midday and 500-800 m by late afternoon. Expect clag for much of the day, though a brief clearance is possible during the evening. Cloud is likely to hang lowest on southwestern slopes; the northeastern side should see somewhat higher bases and better breaks. A persistently wet day is possible, with around 10-20 mm indicated; local totals could vary considerably. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 21 to 60 mph; check again nearer the time.

Low confidence
Wind31 mph W Gusts43 mph Feels0°C Rain6.7 mm Cloud-free summit0% Cloud base510 m Freezing level2,055 m Daylight05:34–21:17 · 15.7 h
Spate watch

There could be a spate risk based on forecast rainfall. Burns and unbridged crossings may rise quickly. Most likely from around 00:00 until around 02:00. Turn back if a crossing looks unsafe.

A grey, cloudy day on Sàileag: summit wind broadly 20-35 mph, with gusts 40-50 mph early in the morning (gale-force winds). The ground is likely to be saturated after recent rain. Expect boggy paths and rapid runoff if more rain arrives. There could be a spate risk based on forecast rainfall. Burns and unbridged crossings may rise quickly. Most likely from around 00:00 until around 02:00 the following day. Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base around 400-700 m in the morning, lifting to 500-800 m around midday and 700-1000 m by late afternoon. Expect the top to stay in cloud for most or all of daylight, with no dependable break. Cloud is likely to hang lowest on western slopes; the eastern side should see somewhat higher bases and better breaks. Some rain is likely, with around 5-10 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 18 to 49 mph; check again nearer the time.

Low confidence
Wind9 mph NW Gusts13 mph Feels2°C Rain0.2 mm Cloud-free summit62% Cloud base1,048 m Freezing level1,955 m Daylight05:36–21:15 · 15.7 h

Cloud-free timing: Around 0% early, improving to around 100% later.

A mixed day on Sàileag: summit wind broadly 5-15 mph, with gusts 10-20 mph early in the morning (a moderate breeze). The ground is likely to be saturated after recent rain. Expect boggy paths and rapid runoff if more rain arrives. Cloud base around 700-1000 m in the morning, lifting to 1000-1300 m around midday and 1500-1800 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view from around midday into the evening. 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 17 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
Wind21 mph S Gusts29 mph Feels4°C Rain0.0 mm Cloud-free summit100% Cloud base2,043 m Freezing level2,978 m Daylight05:38–21:13 · 15.6 h

A fine day on Sàileag: summit wind broadly 10-25 mph, with gusts 25-35 mph during the evening (fresh and blowy). The ground is likely to be wet after recent rain. Much calmer lower down - generally 0-10 mph in the valley, rising towards the tops. Any cloud sits well above the tops (base 1200-2100 m) - clear summits. Little or no rain expected. Bright spells with UV up to 5 - sunscreen on exposed skin. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 13 to 26 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
Wind31 mph S Gusts44 mph Feels9°C Rain6.2 mm Cloud-free summit38% Cloud base787 m Freezing level3,335 m Daylight05:40–21:10 · 15.5 h
Thunder risk: moderate

from the morning into the afternoon. Leave exposed summits and ridges if thunder develops.

Cloud-free timing: Around 75% early, falling to around 50% later.

A grey, cloudy day on Sàileag: summit wind broadly 25-35 mph, with gusts 40-50 mph during the morning (gale-force winds). A meaningful thunderstorm risk is indicated from the morning into the afternoon. Avoid committing to exposed ridges if storms begin to build. Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base around 1000-1300 m in the morning, lowering to 500-800 m around midday and 500-800 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view early in the morning. Cloud is likely to hang lowest on southern slopes; the northern side should see somewhat higher bases and better breaks. Some rain is likely, with around 5-10 mm indicated; timing and local totals remain uncertain. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 20 to 63 mph; check again nearer the time.

Forecast run: 2026-08-06

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