Mountain weather
Northwest Highlands
Confidence
Unsettled conditions continuing with high confidence for a transition to cooler more showery conditions later in the week. Uncertainties in amount of cloud and rain on Monday and details of showers from Tuesday onwards, keep up to date with the latest forecast.
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Mon 17 AugSunrise:Sunset:
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Tue 18 AugSunrise:Sunset:
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Further outlook
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Poor Visibility
Heavy Persistent Rain
Mountain weather forecast
Cloudy at first with rain spreading northeast during the afternoon, turning heavy for a time in the evening, poor visibility at times, freshening southerly winds.
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
Weather
(at 800m)
|
Weather symbols | ||||||
|
Chance of
precipitation (at 800m)
|
Chance of precipitation |
20%
|
30%
|
50%
|
60%
|
90%
|
70%
|
Wind direction and speed
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | E 3mph knots
E
3mph |
SE 7mph knots
SE
7mph |
SE 9mph knots
SE
9mph |
S 10mph knots
S
10mph |
SE 18mph knots
SE
18mph |
SE 17mph knots
SE
17mph |
|
900m
|
900m | E 3mph knots
E
3mph |
SE 8mph knots
SE
8mph |
SE 8mph knots
SE
8mph |
S 10mph knots
S
10mph |
SE 17mph knots
SE
17mph |
SE 15mph knots
SE
15mph |
|
600m
|
600m | NE 2mph knots
NE
2mph |
SE 6mph knots
SE
6mph |
SE 7mph knots
SE
7mph |
S 8mph knots
S
8mph |
SE 11mph knots
SE
11mph |
SE 10mph knots
SE
10mph |
|
300m
|
300m | E 2mph knots
E
2mph |
SE 4mph knots
SE
4mph |
SE 3mph knots
SE
3mph |
S 3mph knots
S
3mph |
SE 4mph knots
SE
4mph |
SE 2mph knots
SE
2mph |
|
Glen
|
Glen | NE 1mph knots
NE
1mph |
SW 2mph knots
SW
2mph |
S 3mph knots
S
3mph |
SW 3mph knots
SW
3mph |
SE 5mph knots
SE
5mph |
SE 5mph knots
SE
5mph |
Wind gust
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | 4mph | 10mph | 12mph | 14mph | 23mph | 21mph |
|
900m
|
900m | 4mph | 10mph | 11mph | 13mph | 22mph | 19mph |
|
600m
|
600m | 3mph | 8mph | 10mph | 12mph | 16mph | 14mph |
|
300m
|
300m | 4mph | 7mph | 8mph | 10mph | 14mph | 11mph |
|
Glen
|
Glen | 2mph | 4mph | 6mph | 5mph | 12mph | 11mph |
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C |
|
900m
|
900m | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C |
|
600m
|
600m | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 13 degrees Celsius 13°C | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C | 11 degrees Celsius 11°C |
|
300m
|
300m | 12 degrees Celsius 12°C | 14 degrees Celsius 14°C | 16 degrees Celsius 16°C | 16 degrees Celsius 16°C | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C |
|
Glen
|
Glen | 14 degrees Celsius 14°C | 16 degrees Celsius 16°C | 18 degrees Celsius 18°C | 18 degrees Celsius 18°C | 16 degrees Celsius 16°C | 15 degrees Celsius 15°C |
| Freezing Level | Freezing Level |
2400m
|
2400m
|
2400m
|
2600m
|
2700m
|
3100m
|
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | 7 degrees Celsius 7°C | 6 degrees Celsius 6°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 6 degrees Celsius 6°C | 5 degrees Celsius 5°C |
|
900m
|
900m | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 7 degrees Celsius 7°C | 6 degrees Celsius 6°C |
|
600m
|
600m | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C |
|
300m
|
300m | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 15 degrees Celsius 15°C | 16 degrees Celsius 16°C | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C |
|
Glen
|
Glen | 14 degrees Celsius 14°C | 16 degrees Celsius 16°C | 18 degrees Celsius 18°C | 18 degrees Celsius 18°C | 16 degrees Celsius 16°C | 15 degrees Celsius 15°C |
| Freezing Level | Freezing Level |
2400m
|
2400m
|
2400m
|
2600m
|
2700m
|
3100m
|
Additional weather information
Meteorologist's view
Light winds in the morning, freshening from the southeast later in the day. A damp afternoon and evening on the hills.
Weather
A bright morning around the west coast but low cloud around hills further inland, cloud lifting during the morning with the chance of some brightness at times for the northern ranges. During the afternoon rain will spread northeast over the area, starting mainly light and intermittent but turning heavier during the evening and becoming persistent. The Caithness hills will be the last to see the rain later in the evening.
Chance of cloud-free hill tops
20% improving to 50% during the morning, falling to 20% again later.
Low cloud and visibility
Low cloud layers above 400m will be extensive for hills away from the west coast at first, Skye likely to be affected by some low cloud too in the morning, cloud bases will become more scattered above 600m with the best chance of clear summits around more northern hills by late morning. Cloud will lower and fill again during the afternoon as rain spreads in with broken layers above 400m by late afternoon. Visibility will be moderate at first in the morning but becoming good by late morning. Visibility will reduce gradually in the afternoon as it becomes wetter and will be poor at times in the evening.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Weather
Rain clearing early on Tuesday morning with the morning tending to brighten up with some sunny spells, showers will develop, especially for western ranges and Skye. Freshening westerly winds will move showers through quite quickly. Feeling fresher out on the hills.
Chance of cloud-free hill tops
40% early in the day, improving to 80% in the east, 60% in the west.
Maximum wind speed expected
Southwest 15mph increasing 20-25mph later.
Temperature
- At 800m Plus 6 Celsius.
- Glen Plus 11 rising to 18 Celsius.
- Freezing level Above all summits.
Low cloud and visibility
Early low cloud layers will lift and break with scattered low cloud bases above 600m in the west, patchier in the east with many summits clear. As showers develop low cloud may gather again above 600m for a time as a shower moves through. Visibility will become very good during the morning, only dipping moderate in any heavier afternoon showers.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Wed 19 Aug
Cloudy at times but a few bright or sunny spells developing. A risk of heavy, slow moving, possibly thundery afternoon showers, keep an eye on the latest forecast.
Thu 20 Aug
Feeling cooler despite the sunshine, scattered showers developing, brisk northerly winds.
Fri 21 Aug
Northerly winds and some sunshine with the risk of showers again.
Mountain weather information
Wed 19 Aug
Cloudy at times but a few bright or sunny spells developing. A risk of heavy, slow moving, possibly thundery afternoon showers, keep an eye on the latest forecast.
Thu 20 Aug
Feeling cooler despite the sunshine, scattered showers developing, brisk northerly winds.
Fri 21 Aug
Northerly winds and some sunshine with the risk of showers again.
Summit specific forecast
Separated from the Grampians by the Great Glen the weather forecast area includes Wester Ross, Assynt, Sutherland, Knoydart, Torridon, Glen Affric and the Cuillin Hills on the Isle of Skye.