Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence for little change to the general pattern over the coming week.
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.
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.
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
Early frost and fog otherwise cloudy with the odd spot of rain. Strengthening easterly summit winds.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
30% | 30% | 30% | 20% | 20% | 10% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
SE
23
|
SE
29
|
SE
30
|
SE
35
|
E
40
|
E
40
|
| 300m |
E
12
|
SE
15
|
E
18
|
E
20
|
E
23
|
E
23
|
| Valley |
E
10
|
SE
13
|
SE
15
|
E
17
|
E
19
|
E
19
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 33 | 41 | 42 | 49 | 57 | 57 |
| 300m | 21 | 27 | 30 | 34 | 39 | 40 |
| Valley | 21 | 26 | 29 | 32 | 37 | 37 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
3°
|
3°
|
3°
|
3°
|
2°
|
1°
|
| 300m |
5°
|
5°
|
5°
|
5°
|
5°
|
4°
|
| Valley |
6°
|
6°
|
6°
|
6°
|
6°
|
5°
|
| Freezing Level |
1,000m
|
1,100m
|
1,000m
|
1,000m
|
1,000m
|
800m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-3°
|
-4°
|
-4°
|
-5°
|
-6°
|
-7°
|
| 300m |
1°
|
1°
|
0°
|
0°
|
-1°
|
-2°
|
| Valley |
2°
|
2°
|
2°
|
2°
|
2°
|
0°
|
Additional weather information
Meteorologist's view
Strengthening winds make it feel very cold to low levels with hill fog making navigation difficult at times.
Weather
Early frost and fog patches otherwise the day will stay mostly cloudy with the occasional spot of rain. Summit winds will turn east and strengthen from the morning.
Chance of cloud-free hill tops
25%.
Low cloud and visibility
Extensive cloud down to 500m with the visibility falling poor in hill fog.
Mountain weather information
Weather
Cloudy with outbreaks of summit snow increasing during the afternoon and a near gale summit wind.
Chance of cloud-free hill tops
25%
Maximum wind speed expected
East 35-40mph gust 55mph
Temperature
- At 700m Minus 0C.
- Valley Plus 1C rising plus 5C.
- Freezing level 600m.
Low cloud and visibility
Extensive cloud down to 500m with the visibility falling poor in cloud and snow.
Mountain weather information
Wed 4 Feb
Sunrise:
Sunset:
Cloudy with showers becoming drier later. Strong southeast summit wind falling moderate later. Freezing level above the summits.
Thu 5 Feb
Sunrise:
Sunset:
Mostly dry and cloudy with bright spells. Near gale east summit wind. Freezing level above the summits.
Fri 6 Feb
Sunrise:
Sunset:
Dry and mostly cloudy with summit snow from late afternoon. Fresh east summit wind. Freezing level 400m.
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.