Southwest Highlands Mountain weather forecast table
Confidence
High for a generally wet and windy weekend, but low for chance of any drier spells. High for general forecast to start next week, but some uncertainty in timings of rain bands and wind strength.
This evening forecast
Mostly cloudy with scattered showers, falling as snow at munro level, mainly across Lochaber and northern Argyll, clear spells further south, particularly across Arran. Strong southwest winds with summits gales. Freezing level around 1000m.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Storm Force Winds
Gales
Poor Visibility
Severe Chill Effect
Heavy Persistent Rain
Mountain weather forecast
Dry bright start, but rain spreading east. Severe gales increasing to storm force winds.
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
Weather (at 800m) |
|
|
|
|
|
|
|
|
Chance of precipitation (at 800m) |
30% | 30% | 10% | <05% | 40% | >95% | >95% | >95% |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 1300m |
SW
37
|
SW
40
|
SW
41
|
S
49
|
S
61
|
S
65
|
SW
64
|
SW
59
|
| 900m |
SW
28
|
SW
28
|
SW
30
|
S
35
|
S
41
|
S
43
|
SW
43
|
SW
40
|
| 600m |
SW
34
|
SW
34
|
SW
37
|
S
41
|
S
49
|
S
53
|
SW
50
|
SW
46
|
| 300m |
SW
17
|
SW
17
|
S
20
|
S
21
|
S
26
|
S
28
|
SW
27
|
SW
25
|
| Glen |
SW
12
|
SW
11
|
SW
14
|
S
14
|
S
19
|
S
22
|
SW
22
|
SW
20
|
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 1300m | 47 | 51 | 52 | 63 | 78 | 83 | 83 | 77 |
| 900m | 38 | 39 | 41 | 48 | 57 | 61 | 61 | 58 |
| 600m | 43 | 43 | 48 | 54 | 64 | 70 | 68 | 63 |
| 300m | 29 | 28 | 32 | 33 | 40 | 45 | 45 | 43 |
| Glen | 26 | 25 | 29 | 31 | 39 | 45 | 44 | 42 |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 1300m |
-2°
|
-2°
|
-2°
|
-2°
|
-1°
|
0°
|
2°
|
3°
|
| 900m |
1°
|
1°
|
1°
|
1°
|
2°
|
3°
|
4°
|
5°
|
| 600m |
4°
|
3°
|
3°
|
4°
|
4°
|
5°
|
6°
|
7°
|
| 300m |
5°
|
5°
|
5°
|
5°
|
6°
|
7°
|
8°
|
9°
|
| Glen |
7°
|
7°
|
7°
|
7°
|
8°
|
9°
|
10°
|
10°
|
| Freezing Level |
1,000m
|
1,000m
|
1,000m
|
1,200m
|
1,700m
|
2,000m
|
2,600m
|
2,600m
|
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 1300m |
-11°
|
-11°
|
-11°
|
-12°
|
-11°
|
-10°
|
-8°
|
-6°
|
| 900m |
-6°
|
-6°
|
-7°
|
-7°
|
-7°
|
-6°
|
-4°
|
-2°
|
| 600m |
-3°
|
-4°
|
-4°
|
-4°
|
-4°
|
-2°
|
-1°
|
1°
|
| 300m |
1°
|
1°
|
0°
|
0°
|
1°
|
2°
|
3°
|
5°
|
| Glen |
4°
|
4°
|
3°
|
3°
|
4°
|
5°
|
6°
|
7°
|
Additional weather information
Met Office Aberdeen meteorologist's view
Severe gales increasing to storm force winds making standing very difficult with a high chance of serious injury. Gust reaching over 90 mph across the higher summits in the afternoon and evening making any mobility almost impossible.
Weather
Scattered showers, snow above 900-1000m, mainly across Lochaber, die out through the early hours. Then a dry mostly cloudy morning, sunny spells across Arran, but severe gales increasing to storm force winds across the summits. Rain spreads into the west coast around late morning, becoming widespread and heavy by early afternoon with summit winds continuing to strength. Persistent often heavy rain continuing through much of the night.
Chance of cloud-free hill tops
30-40% in the morning. Nil in the afternoon.
Low cloud and visibility
Variable visibility in the morning, with occasional cloud above 500-600m, mainly over Lochaber and northern Argyll, Hills largely cloud free further south. Persistent cloud lowering to 500m early afternoon, lower slopes by late afternoon.
Mountain weather information
Weather
Heavy rain may ease for a time around dawn and early morning, but further heavy persistent rain by the afternoon continuing into the night. Strong to gale force summit winds with a significant wind chill despite mild temperatures.
Chance of cloud-free hill tops
Nil
Maximum wind speed expected
Southwest 55 gusting 65 mph, easing to 45 gusting 55 mph for a few hours during the day. Southerly 60 gusting 75 mph late evening.
Temperature
- At 800m Plus 7 Celsius.
- Glen Plus 7 Celsius rising to 9 Celsius.
- Freezing level Well above the summits.
Low cloud and visibility
Very poor visibility in heavy rain and persistent cloud to lower slopes.
Mountain weather information
Mon 15 Dec
Heavy rain clearing early Monday to give a drier day, but often cloudy with a few showers likely. Strong southwest winds easing slightly in the afternoon. Freezing level above the summits, but dropping to 1200m in the afternoon, 1000m in the evening.
Tue 16 Dec
Scattered showers, falling as snow above around 700-800m, but turning mostly dry through the day. Moderate to fresh southwest winds. Freezing level 800-900m.
Wed 17 Dec
Rain, perhaps some summit snow, spreads east with south or southwest winds, a risk of summit gales. Drier later, but showers following in the west. Freezing level 800m rising above the summits for a time.
Summit specific forecast
Mountain summit forecast map
Including Ben Nevis, Glen Coe and the rest of Lochaber, Argyll including the Isles, Loch Lomond, Trossachs and Arran
For snow and avalanche hazard forecasts please visit Scottish Avalanche Information Service