Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence for the unsettled conditions for the next 5 days with summits gales from Tuesday. Lower confidence regarding timings and distribution of rainfall.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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
Cloudy with rain and drizzle. Breezy on tops.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
40% | 40% | 40% | 40% | 60% | 40% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
S
24
|
S
27
|
S
27
|
SE
25
|
SE
29
|
S
17
|
| 300m |
S
10
|
S
13
|
S
14
|
SE
13
|
SE
15
|
S
7
|
| Valley |
S
8
|
S
12
|
S
12
|
SE
11
|
SE
13
|
S
6
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 34 | 37 | 37 | 34 | 39 | 22 |
| 300m | 21 | 24 | 25 | 22 | 26 | 13 |
| Valley | 20 | 24 | 24 | 22 | 26 | 12 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
3°
|
3°
|
3°
|
3°
|
3°
|
2°
|
| 300m |
5°
|
5°
|
5°
|
6°
|
5°
|
4°
|
| Valley |
6°
|
6°
|
6°
|
7°
|
6°
|
5°
|
| Freezing Level |
1,000m
|
1,100m
|
1,200m
|
1,100m
|
1,200m
|
1,100m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
| 300m |
2°
|
1°
|
1°
|
2°
|
1°
|
2°
|
| Valley |
4°
|
2°
|
3°
|
4°
|
3°
|
3°
|
Additional weather information
Meteorologist's view
Note the fresh to strong winds on tops giving a sub-zero windchill.
Weather
A cloudy day hill fog. Outbreaks of rain and drizzle throughout the day which may be heavy at times. Fresh to strong winds on tops.
Chance of cloud-free hill tops
Little chance.
Low cloud and visibility
Widespread cloud bases around 600-700m, possibly falling to lower slopes at times. Visibility will be generally good below cloud bases, but perhaps falling to a few kilometres in rain and drizzle.
Mountain weather information
Weather
A very windy day with gales on summits and in exposure, increasing to severe gale force during the afternoon. Mainly dry with bright spells to start, turning cloudier through the afternoon with a risk of patchy rain by evening.
Chance of cloud-free hill tops
60% decreasing to 30% during the afternoon.
Maximum wind speed expected
45-50mph mean speeds by evening on summits and ridges, gusting to 60mph.
Temperature
- At 700m Plus 1 Celsius rising 3 Celsius in the afternoon.
- Valley Plus 4 Celsius rising 8 Celsius in the afternoon.
- Freezing level Above summits.
Low cloud and visibility
A few patches of cloud around 700m in the morning, becoming more occasional and lowering at times in the afternoon. Generally good visibility below cloud bases.
Mountain weather information
Wed 21 Jan
Sunrise:
Sunset:
Rather cloudy with scattered showers, perhaps heavy in the morning. Strong winds, severe gales on summits.
Thu 22 Jan
Sunrise:
Sunset:
Cloudy with showers or longer spells of rain. Remaining windy with gales of severe gales on summits.
Fri 23 Jan
Sunrise:
Sunset:
Largely cloudy with risk of rain or showers. Still rather windy.
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.