Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for most aspects throughout the forecast period with the main uncertainty cloud amounts, especially in the outlook period. Low confidence in wind strength on Christmas day and in the outlook period.
This evening forecast
Low cloud with moderate easterly winds across the tops. Mainly dry although a few spots of light drizzle are possible. Freezing level above the summits.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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.
Poor Visibility
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.
Mountain weather forecast
Dry with patchy cloud. Fresh 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) |
10% | 10% | <05% | <05% | <05% | <05% | 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
19
|
E
21
|
E
25
|
E
26
|
E
25
|
E
25
|
E
26
|
E
24
|
| 300m |
E
9
|
E
11
|
E
13
|
E
15
|
E
15
|
E
15
|
E
14
|
E
13
|
| Valley |
E
7
|
E
8
|
E
9
|
E
12
|
E
13
|
E
12
|
E
11
|
E
11
|
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 | 27 | 29 | 36 | 37 | 36 | 35 | 37 | 34 |
| 300m | 18 | 20 | 25 | 26 | 26 | 25 | 26 | 24 |
| Valley | 16 | 17 | 21 | 24 | 24 | 23 | 23 | 22 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
3°
|
2°
|
2°
|
1°
|
2°
|
1°
|
1°
|
2°
|
| 300m |
5°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
| Valley |
6°
|
6°
|
5°
|
5°
|
6°
|
5°
|
5°
|
5°
|
| Freezing Level |
1,800m
|
900m
|
800m
|
700m
|
700m
|
700m
|
700m
|
700m
|
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°
|
-5°
|
-6°
|
-5°
|
-6°
|
-6°
|
-5°
|
| 300m |
2°
|
1°
|
0°
|
-1°
|
0°
|
0°
|
-1°
|
0°
|
| Valley |
4°
|
3°
|
2°
|
1°
|
2°
|
2°
|
1°
|
1°
|
Additional weather information
Meteorologist's view
Wind gusting 40 mph across the summits, resulting in a notable wind chill.
Weather
Dry with low cloud through the early hours. Then day with frequent patchy cloud, but some sunny then clear spells too.
Chance of cloud-free hill tops
30-40% increasing to 60% late afternoon.
Low cloud and visibility
Occasional cloud above 500-600m, tending to thin late afternoon. Best chance of cloud breaks west of the main summit ridge.
Mountain weather information
Weather
Christmas day dry with patchy cloud and clear then sunny spells, but fresh to strong winds across the tops giving a cold feel. Dry with clear spells overnight.
Chance of cloud-free hill tops
70%
Maximum wind speed expected
East 25-30 gusting 35-40 mph across the summits.
Temperature
- At 700m Minus 1 Celsius.
- Valley Zero Celsius rising to plus 3 Celsius.
- Freezing level 600-700m.
Low cloud and visibility
Generally very good or excellent visibility, but occasional patchy of cloud above 700m
Mountain weather information
Fri 26 Dec
Sunrise:
Sunset:
Dry with good sunny spells, although patchy cloud may increase later in the day across the tops. Moderate easterly winds. Freezing level around 800m.
Sat 27 Dec
Sunrise:
Sunset:
Mostly cloudy with hill fog on the tops, although a few cloud breaks are possible. Fresh easterly winds. Freezing level above the summits.
Sun 28 Dec
Sunrise:
Sunset:
Largely dry and cloudy with some hill fog on the summits, perhaps a little patchy light drizzle at times. Light winds. Freezing level above the summits dropping to 700m.
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.