Glas Tulaichean weather forecast.

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

A mixed day on Glas Tulaichean: summit wind broadly 10-30 mph, with gusts 35-45 mph early in the morning (strong winds). 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 1500-1800 m around midday and 1500-1800 m by late afternoon. The top is likely to drift in and out of cloud; views may come and go. Little or no rain expected. Cold on top: air temperature broadly 2 to 6°C, feeling around -4 to 0°C in the wind - wrap up.

A rough, clagged-in day on Glas Tulaichean: summit wind broadly 25-40 mph, with gusts 45-55 mph during the morning (gale-force winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 500-800 m in the morning, lifting to 800-1100 m around midday and 800-1100 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 southwestern slopes; the northeastern side should see somewhat higher bases and better breaks. 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.

A rough, clagged-in day on Glas Tulaichean: summit wind broadly 30-50 mph, with gusts 55-65 mph during the afternoon (storm-force winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 700-1000 m in the morning, lowering to 700-1000 m around midday and 500-800 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 southwestern slopes; the northeastern side should see somewhat higher bases and better breaks. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Cold on top: air temperature broadly 6 to 10°C, feeling around 0 to 4°C in the wind - wrap up. Confidence moderate (ensemble members show a moderate spread) - the summit peak could reasonably be 35-53 mph, so treat the headline as mid-range.

Cloud-free timing: Around 0% early, improving to around 83% later.

A mixed day on Glas Tulaichean: summit wind broadly 20-30 mph, with gusts 35-45 mph during the morning (strong winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 500-800 m in the morning, lifting to 1400-1700 m around midday and 1400-1700 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. 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 18 to 34 mph; check again nearer the time.

Cloud-free timing: Around 25% early, improving to around 83% later.

A fine day on Glas Tulaichean: summit wind broadly 5-25 mph, with gusts 20-30 mph early in the morning (fresh and blowy). Much calmer lower down - generally 0-10 mph in the valley, rising towards the tops. Cloud base around 700-1000 m in the morning, lifting to 1500-1800 m around midday and 1500-1800 m by late afternoon. The top is likely to drift in and out of cloud; views may come and go. 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. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 11 to 25 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.

Cloud-free timing: Around 0% early, improving to around 33% later.

A grey, cloudy day on Glas Tulaichean: summit wind broadly 5-25 mph, with gusts 25-35 mph during the evening (fresh and blowy). Much calmer lower down - generally 0-10 mph in the valley, rising towards the tops. Cloud base around 600-900 m in the morning, 3100-3400 m around midday and 900-1200 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. 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 14 to 26 mph; check again nearer the time.

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

A mixed day on Glas Tulaichean: summit wind broadly 25-35 mph, with gusts 40-50 mph early in the morning (gale-force winds). A meaningful thunderstorm risk is indicated from the afternoon into overnight. Avoid committing to exposed ridges if storms begin to build. Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 1500-1800 m around midday, lowering to 500-800 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. 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 2-5 mm indicated; timing and local totals remain uncertain. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 16 to 55 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.