Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for high pressure controlling the pattern and bringing settled weather, but lower for the cloud detail.
This evening forecast
Dry with clear spells. Winds strong easterly. Freezing level around 800-900m.
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.
Gales
Gale force winds (gusts over 50mph) make walking difficult and strenuous with a potential to be blown over by gusts. There is often a marked increase in winds through cols or on exposed ridges and summits. Distances can take longer to cover and compass bearings become harder to follow accurately.
Severe Chill Effect
Wind significantly lowers the ‘feels-like’ temperature relative to the actual temperature, with even moderate winds significantly adding to the chilling effect. Strong winds can result in a severe and debilitating wind chill many degrees below the actual temperature. This effect will be enhanced in rain or wet snow. Without protection, prolonged exposure could result in frost nip or frostbite on exposed parts of the body and/or hypothermia.
Mountain weather forecast
Dry with sunny spells. Strong perhaps gale force summit winds.
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
|
|
Chance of precipitation (at 700m) |
00% | 00% | 00% | 00% | 00% | 00% | 00% | 00% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
E
33
|
E
31
|
E
30
|
E
28
|
E
29
|
E
30
|
E
32
|
E
37
|
| 300m |
E
16
|
E
16
|
E
16
|
E
19
|
E
20
|
E
18
|
E
16
|
E
18
|
| Valley |
E
13
|
E
12
|
E
13
|
E
16
|
E
17
|
E
16
|
E
13
|
E
15
|
Wind gust (mph)
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m | 47 | 44 | 43 | 39 | 41 | 42 | 45 | 51 |
| 300m | 31 | 30 | 29 | 30 | 31 | 30 | 29 | 33 |
| Valley | 29 | 28 | 28 | 29 | 30 | 30 | 28 | 31 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
4°
|
3°
|
3°
|
3°
|
5°
|
7°
|
7°
|
6°
|
| 300m |
6°
|
5°
|
5°
|
6°
|
8°
|
10°
|
9°
|
8°
|
| Valley |
7°
|
6°
|
6°
|
8°
|
10°
|
11°
|
11°
|
10°
|
| Freezing Level |
800m
|
800m
|
700m
|
800m
|
900m
|
1,100m
|
1,300m
|
1,400m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-3°
|
-4°
|
-4°
|
-3°
|
-2°
|
1°
|
2°
|
0°
|
| 300m |
1°
|
0°
|
0°
|
2°
|
4°
|
6°
|
6°
|
4°
|
| Valley |
3°
|
2°
|
2°
|
4°
|
7°
|
8°
|
8°
|
6°
|
Additional weather information
Meteorologist's view
Severe wind chill confined to higher peaks. Significant risk of sunburn.
Weather
Staying dry. Occasional clear then sunny spells, these turning increasingly hazy for the afternoon as higher cloud increases.
Chance of cloud-free hill tops
90% plus
Low cloud and visibility
Good or very good, becoming very poor within cloud which infrequently lowers to 700m.
Mountain weather information
Weather
Dry with occasional sunny spells. Fresh to strong summit winds.
Chance of cloud-free hill tops
90% plus
Maximum wind speed expected
East or southeast mean 25mph with gusts 35-40mph across exposed ridges and summits.
Temperature
- At 700m Plus 2 Celsius increasing 8 Celsius for the afternoon
- Valley Plus 5 Celsius increasing 15 Celsius for the afternoon
- Freezing level 800m lifting Above summits
Low cloud and visibility
Good or very good, becoming very poor in cloud which infrequently lowers to 700m.
Mountain weather information
Fri 24 Apr
Sunrise:
Sunset:
Dry with periods of sunshine with moderate winds. Freezing level above the peaks.
Sat 25 Apr
Sunrise:
Sunset:
Dry with sunny spells with light winds. Freezing level above the peaks.
Sun 26 Apr
Sunrise:
Sunset:
Mainly dry with sunny spells and moderate winds. Freezing level above the peaks.
Updated at:
Summit specific forecast
Mountain summit forecast map
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Key
Mountain summits
Other points of interest
Cluster of multiple stations
The Mourne Mountains are a granite mountain range in County Down in the southeast of Northern Ireland, is an area of outstanding natural beauty, and has been proposed as the first National Park in Northern Ireland.