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Southwest Highlands - Mountain weather forecast

Weather warnings

Warnings affecting Southwest Highlands over the next 5 days

Confidence

High for general developments, but low for timing of rain clearing Monday and for cloud amounts Tuesday. Low for all aspects on Friday.

  • Monday
  • Tuesday
  • Further outlook

Monday 25 September 2017

Weather hazards

Poor visibility High likelihood Hide detail

Poor visibility presents challenging route finding conditions. Visibility could be significantly less than 50 metres in all directions with few or no visual references, especially on featureless moors or plateaux. Distances become hard to judge and cliff or cornice edges can be difficult to recognise. These conditions require good navigational skills. There is a risk of white-out conditions when mist or fog is combined with extensive snow cover.

Learn more about poor visibility

Forecast

Rain easing. Dry with sunny spells in the far west.

Weather

06:00 09:00 12:00 15:00 18:00 21:00
Weather at 800m Light rain Drizzle Sunny intervals Sunny intervals Cloudy
Chance of precipitation at 800m 80% 50% 30% 10% 10% 00%

Wind speed and direction

06:00 09:00 12:00 15:00 18:00 21:00
Altitude above mean sea level
1100m E 8 10 SE 14 17 S 12 15 S 11 14 SE 13 16 SE 18 22
900m E 7 9 SE 11 14 S 10 13 S 9 12 SE 11 15 SE 16 21
600m E 3 4 E 6 8 W 6 8 SW 5 7 SW 7 9 SE 9 12
300m NE 3 4 N 3 5 SW 4 8 SW 4 7 S 5 7 SE 7 11
Glen NE 1 2 NE 1 4 W 2 5 S 2 6 S 3 5 E 3 6

Temperature

06:00 09:00 12:00 15:00 18:00 21:00
Altitude above mean sea level
1100m 6 ° 6 ° 7 ° 7 ° 7 ° 6 °
900m 8 ° 8 ° 9 ° 10 ° 9 ° 8 °
600m 10 ° 10 ° 11 ° 12 ° 12 ° 11 °
300m 11 ° 12 ° 13 ° 14 ° 13 ° 12 °
Glen 12 ° 13 ° 15 ° 16 ° 14 ° 13 °

Feels like temperature

06:00 09:00 12:00 15:00 18:00 21:00
Altitude above mean sea level
1100m 4 ° 3 ° 3 ° 4 ° 3 ° 1 °
900m 6 ° 6 ° 7 ° 8 ° 6 ° 4 °
600m 9 ° 9 ° 10 ° 11 ° 10 ° 9 °
300m 11 ° 12 ° 13 ° 13 ° 13 ° 11 °
Glen 12 ° 13 ° 15 ° 16 ° 14 ° 12 °

Freezing level

06:00 09:00 12:00 15:00 18:00 21:00
Freezing level i 2,300 m 2,200 m 2,100 m 2,100 m 2,100 m 2,000 m
Sunrise: 07:10
Sunset: 19:11
Moon phase: Waxing crescent

Weather

Dry along the west coast and Island ranges with sunny spells through the day. Elsewhere rain will gradually die out from the west through the morning. Cloud will begin to break up as the afternoon goes on.

Chance of cloud-free mountain/hill tops at 800m

30% in the morning away from the coast with broken or extensive cloud above 500-600m, and lower patches to 300m. Becoming 90% in the afternoon with cloud breaking and lifting above the summits.

Visibility

Poor at first with surrounding hills often obscured by rain, but improving to very good from late morning.

Met Office Aberdeen meteorologist's view

Wind and temperature data look reasonable.

Tuesday 26 September 2017

Sunrise: 07:12
Sunset: 19:09
Moon phase: Waxing crescent

Weather

Cloudy with a little patchy light rain through the early hours. Then a dry but rather cloudy day. Breezy with a risk of summit gales developing.

Temperature

  • At 800m 9 Celsius.
  • Glen 8 Celsius rising to 15 Celsius.
  • Freezing level Well above the summits.

Visibility

Very good with surrounding hills clearly visible.

Chance of cloud-free mountain/hill tops at 800m

40% through the morning with broken cloud above 600-800m, most extensive over the Trossachs, becoming 70% in the afternoon as cloud become increasingly broken with bases 700-1000m.

Maximum wind speed expected

South 15-20mph increasing to 30 gusting 40mph in the afternoon, but gusting 50mph over exposed summits and ridges in Lochaber.

Wednesday 27 September 2017

Sunrise: 07:14
Sunset: 19:06
Moon phase: Waxing crescent

Widespread southeasterly summit gales. Dry but cloudy in the morning. Rain spreads east later in the day.

Thursday 28 September 2017

Sunrise: 07:16
Sunset: 19:03
Moon phase: First quarter

A wet and windy start. Overnight rain should die out through the morning with winds falling light, but freshening later in the day.

Friday 29 September 2017

Sunrise: 07:18
Sunset: 19:01
Moon phase: First quarter

Strong southerly winds with another band of rain spreading east. Fresher conditions in the west in the afternoon with sunshine and showers. Low confidence for details.

Issued at:
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Includes Ben Nevis, Glen Coe and the rest of Lochaber, Argyll including the Isles, Loch Lomond, Trossachs and Arran

The South West Highlands is an extensive area of mountains, moorland, islands and sea which is home to several distinctly different cultures. The West Highland Way was Scotland's first long distance route and remains by far the most popular. It stretches for 94 miles from Milngavie on the edge of Glasgow to Fort William at the foot of Ben Nevis.

The South West Highlands area is very sparsely populated, with many mountain ranges including the highest mountain in the British Isles, Ben Nevis, standing at 1,344 metres. This mountain is a popular destination attracting an estimated 100,000 ascents a year. The 700 metre cliffs of the north face are among the highest in the UK, providing classic scrambles and rock climbs of all difficulties for climbers and mountaineers.

For snow and avalanche hazard forecasts please visit Sportscotland Avalanche Information Service

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