Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for east to southeast flow persisting also for relatively unsettled, but lowering for timing detail of worst of conditions.
This evening forecast
Showers or longer periods of rain and across highest summits snow. Severe wind chill at height in gale to severe gale southeast summit winds. Freezing level around 1000m.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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.
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
Showers for the morning, periods of occasionally heavy rain in afternoon. Strong to gale southeast 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) |
30% | 40% | 40% | 40% | 80% | 90% | 80% | 60% |
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 |
S
38
|
S
31
|
S
25
|
SE
32
|
E
41
|
E
41
|
SE
38
|
SE
33
|
| 300m |
S
21
|
S
16
|
SE
12
|
SE
17
|
E
24
|
E
23
|
SE
21
|
SE
19
|
| Valley |
S
18
|
S
14
|
SE
10
|
SE
15
|
E
21
|
E
21
|
SE
19
|
SE
17
|
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 | 53 | 43 | 34 | 44 | 57 | 58 | 53 | 46 |
| 300m | 36 | 28 | 22 | 31 | 41 | 41 | 37 | 33 |
| Valley | 35 | 27 | 22 | 30 | 39 | 40 | 36 | 31 |
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°
|
2°
|
1°
|
3°
|
5°
|
5°
|
| 300m |
5°
|
4°
|
4°
|
4°
|
4°
|
5°
|
7°
|
7°
|
| Valley |
6°
|
6°
|
5°
|
5°
|
5°
|
6°
|
8°
|
8°
|
| Freezing Level |
1,000m
|
900m
|
900m
|
800m
|
800m
|
1,400m
|
1,500m
|
1,500m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-5°
|
-5°
|
-5°
|
-6°
|
-7°
|
-5°
|
-2°
|
-1°
|
| 300m |
0°
|
0°
|
0°
|
-1°
|
-2°
|
0°
|
2°
|
3°
|
| Valley |
2°
|
2°
|
2°
|
1°
|
0°
|
1°
|
4°
|
4°
|
Additional weather information
Meteorologist's view
Severe wind chill effect receding as the freezing level lifts later in the day.
Weather
Occasional showers, snow above around 800m, with limited clear then bright spells. Cloud soon thickening from the south, bringing periods of occasionally heavy rain for the afternoon, which weakens during the evening.
Chance of cloud-free hill tops
40% becoming 10-20% from noon
Low cloud and visibility
Good or very good, becoming moderate or poor in rain, very poor in snow and within cloud with bases becoming quite extensive from 600m from noon with patches lower down for the afternoon.
Mountain weather information
Weather
Cloudy with showers or longer periods of rain, which turn heavy at times, particularly late in the day. Strong southeast summit winds bringing a severe wind chill to higher peaks.
Chance of cloud-free hill tops
20%
Maximum wind speed expected
Southeast mean 30-35mph with gusts reaching 45mph across exposed ridges and summits.
Temperature
- At 700m Plus 3-4 Celsius
- Valley Plus 6 Celsius increasing 9 Celsius for the afternoon
- Freezing level Above summits
Low cloud and visibility
Good or very good, becoming moderate or poor in rain, very poor in snow and within cloud with bases quite extensive from 600m with patches lower down.
Mountain weather information
Fri 23 Jan
Sunrise:
Sunset:
Rather cloudy with occasional showers, these turning wintry across highest peaks. Strong to gale southeast summit winds bringing a severe wind chill at height. Freezing level above summits.
Sat 24 Jan
Sunrise:
Sunset:
Rather cloudy with scattered light showers, wintry across highest peaks. Strong southeast summit winds bringing a severe wind chill at height. Freezing level above summits.
Sun 25 Jan
Sunrise:
Sunset:
Mainly cloudy with patchy light rain and summit snow. Fresh easterly winds. Freezing level around 700-800m.
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.