Mountain weather
Southwest Highlands Mountain weather forecast table
Confidence
High confidence for Friday, moderate confidence for Saturday, but low confidence from Sunday onwards.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Strong Sunlight
Harmful UV levels from sunlight increase with altitude giving a greater risk of sunburn and eye damage, even on some overcast days. On breezy days, the cooling effect of wind on exposed skin may disguise any feeling of sunburn until it is too late. If there is snow cover, glare increases the effect of UV rays especially on the eyes. It is advisable to wear sun block, protective clothing such as a long-sleeved top and hat and have good quality eye protection.
Thunderstorms
Lightning is a significant mountain hazard which can result in serious injury or death. Mountain terrain often leaves one highly exposed to lightning strikes. Hail may give unpleasant conditions with torrential rain and localised flash flooding also possible, mainly in Summer months.
Mountain weather forecast
Mostly dry by day with sunny spells. Low cloud and showers arrive in the far east after dusk.
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
Weather (at 800m) |
|
|
|
|
|
|
Chance of precipitation (at 800m) |
10% | 20% | 20% | 10% | 10% | 20% |
Wind direction and speed (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 1300m |
E
38
|
NE
38
|
NE
25
|
E
17
|
E
17
|
E
15
|
| 900m |
E
28
|
E
26
|
E
20
|
E
14
|
E
16
|
E
15
|
| 600m |
NE
29
|
NE
28
|
NE
23
|
NE
17
|
NE
12
|
NE
13
|
| 300m |
N
11
|
NE
16
|
NE
12
|
NE
11
|
NE
8
|
NE
6
|
| Glen |
NE
12
|
NE
14
|
NE
13
|
NE
11
|
E
9
|
E
7
|
Wind gust (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 1300m | 47 | 47 | 33 | 23 | 23 | 19 |
| 900m | 37 | 36 | 27 | 20 | 21 | 21 |
| 600m | 35 | 36 | 30 | 24 | 17 | 17 |
| 300m | 14 | 22 | 18 | 16 | 12 | 8 |
| Glen | 24 | 25 | 23 | 21 | 18 | 17 |
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 1300m |
9°
|
9°
|
10°
|
11°
|
9°
|
8°
|
| 900m |
10°
|
12°
|
15°
|
15°
|
12°
|
9°
|
| 600m |
12°
|
13°
|
16°
|
16°
|
14°
|
12°
|
| 300m |
13°
|
15°
|
19°
|
19°
|
16°
|
12°
|
| Glen |
12°
|
16°
|
20°
|
20°
|
18°
|
14°
|
| Freezing Level |
2,100m
|
2,200m
|
2,400m
|
2,400m
|
2,400m
|
2,500m
|
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 1300m |
4°
|
4°
|
6°
|
8°
|
6°
|
5°
|
| 900m |
5°
|
7°
|
11°
|
12°
|
9°
|
6°
|
| 600m |
7°
|
8°
|
11°
|
12°
|
12°
|
9°
|
| 300m |
11°
|
12°
|
16°
|
17°
|
15°
|
12°
|
| Glen |
10°
|
13°
|
17°
|
18°
|
16°
|
13°
|
Additional weather information
Met Office Aberdeen meteorologist's view
Prolonged sunshine may require suitable eyewear and skin protection.
Weather
A mostly dry day with hazy sunny sunshine but a few heavy - potentially thundery - showers arriving in southern Trossachs, Jura and Arran this morning. Mainly dry and bright through the day. Low cloud arrives from the east into the eastern Trossachs, maybe towards Arran and Jura, from the late evening with drizzle or a few outbreaks of heavier rain.
Chance of cloud-free hill tops
Generally above 80%, but falling to 30% or less in eastern areas after dark.
Low cloud and visibility
Generally clear with excellent visibilities, perhaps some patchy low cloud or fog in a few prone spots around dawn, but this soon clearing. Low cloud arrives into eastern areas in the evening, with bases down to 200-300m and very poor visibilities in drizzle or hill fog.
Mountain weather information
Weather
Extensive low cloud pushing in from in eastern areas with outbreaks of rain or drizzle at times. Dry with bright or sunny spells in the morning in the west, particularly towards Locahber and Moidart, but clouding over through the afternoon and evening. Perhaps a few heavier showers at times with a low chance of thunder towards the northwest.
Chance of cloud-free hill tops
50% in the west in the morning, falling to 30% by evening. 30% or less in the southeast.
Maximum wind speed expected
Light east or south-easterly winds, gusts 15-20mph on the highest summits.
Temperature
- At 800m Plus 7 rising to plus 11 Celsius.
- Glen Plus 8 rising to plus 14 Celsius.
- Freezing level Above summits.
Low cloud and visibility
Widespread, extensive cloud down to 200-300m with poor visibility in hill fog or outbreaks of rain or drizzle. Clear summits in the west with broken cloud to 1000m or higher.
Mountain weather information
Sun 5 May
Sunrise:
Sunset:
Sunny spells or showers, sometimes heavy, perhaps longer spells of rain at times. Occasional low cloud and hill fog. Freezing levels above summits. Light winds.
Mon 6 May
Sunrise:
Sunset:
Sunny spells or showers, sometimes heavy, perhaps longer spells of rain at times. Occasional low cloud and hill fog. Freezing levels above summits. Light winds.
Tue 7 May
Sunrise:
Sunset:
Sunny spells or showers. Occasional low cloud and hill fog. Freezing levels above summits. Light winds.
Updated at:
Summit specific forecast
Mountain summit forecast map
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Key
Mountain summits
Other points of interest
Cluster of multiple stations
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