Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
Medium
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
Early rain, then bright or sunny spells.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
50% | 30% | 10% | <05% | <05% | <05% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
NW
20
|
NW
25
|
NW
27
|
NW
25
|
NW
28
|
W
25
|
| 300m |
NW
12
|
NW
11
|
NW
15
|
NW
13
|
NW
12
|
NW
10
|
| Valley |
NW
11
|
NW
11
|
NW
13
|
NW
11
|
NW
10
|
NW
9
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 26 | 35 | 36 | 34 | 40 | 35 |
| 300m | 19 | 22 | 25 | 23 | 24 | 21 |
| Valley | 20 | 23 | 24 | 22 | 24 | 22 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
2°
|
2°
|
1°
|
1°
|
0°
|
-1°
|
| 300m |
4°
|
3°
|
4°
|
3°
|
1°
|
1°
|
| Valley |
5°
|
4°
|
5°
|
5°
|
2°
|
2°
|
| Freezing Level |
1,100m
|
800m
|
600m
|
600m
|
500m
|
400m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-4°
|
-5°
|
-6°
|
-6°
|
-8°
|
-8°
|
| 300m |
0°
|
-1°
|
-1°
|
-1°
|
-3°
|
-4°
|
| Valley |
2°
|
0°
|
1°
|
1°
|
-2°
|
-2°
|
Additional weather information
Meteorologist's view
Nothing further to add.
Weather
Cloudy with rain or showers early morning, the showers perhaps turning wintry over the summits before clearing. Becoming by the afternoon with the cloud lifting and clearing with some sunny spells and a frost forming in the evening.
Chance of cloud-free hill tops
30% overnight, becoming 80% daylight hours.
Low cloud and visibility
Extensive low cloud, base 400 to 700m at first, lifting and breaking near or above the summits with some sunny or clear spells. Visibility moderate to very poor in early rain and cloud, but mostly very good or excellent.
Mountain weather information
Weather
Mainly dry with bright or clear spells and a frost at first. However, lowering cloud and outbreaks of rain and sleet in the evening
Chance of cloud-free hill tops
80% falling 40% by evening.
Maximum wind speed expected
Southwest 15 to 20mph, becoming South 25 to 30mph gusting 45mph in the evening.
Temperature
- At 700m Minus 2 Celsius rising to Plus 1 Celsius
- Valley Minus 1 rising to Plus 3 Celsius
- Freezing level Most levels at first rising to around 800m.
Low cloud and visibility
Nil significant at first, but low cloud becoming extensive 300 to 600m by evening. Mostly very good, but becoming moderate to very poor during the evening.
Mountain weather information
Thu 15 Jan
Sunrise:
Sunset:
Rain soon clearing. Then cloudy or bright, extensive low cloud and mist possible later. Light winds. Freezing level near or above the summits.
Fri 16 Jan
Sunrise:
Sunset:
Mainly dry and bright daylight hours. Fresh or strong west or northwest winds at height. Freezing level 600m or less at times.
Sat 17 Jan
Sunrise:
Sunset:
Cloudy or bright with wintry showers. Light winds. Freezing level well down at first, rising towards the summits.
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.