Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence for rain on Monday and Tuesday before high pressure builds and more settled, colder conditions develop.
This evening forecast
Cloudy with outbreaks of light rain. Moderate to fresh easterly winds. Feeling cold. Freezing level above summits.
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 heavy rain at times, becoming dry later.
| 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) |
90% | 90% | 70% | 60% | 40% | 10% | 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
20
|
NE
21
|
E
19
|
SE
22
|
SE
20
|
SE
18
|
SE
15
|
SE
11
|
| 300m |
E
12
|
NE
12
|
E
12
|
SE
13
|
SE
12
|
SE
11
|
SE
9
|
SE
6
|
| Valley |
E
9
|
NE
10
|
E
10
|
SE
11
|
SE
11
|
SE
9
|
SE
7
|
SE
5
|
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 | 27 | 30 | 28 | 25 | 22 | 16 |
| 300m | 20 | 22 | 20 | 22 | 21 | 18 | 15 | 10 |
| Valley | 19 | 20 | 18 | 20 | 19 | 17 | 14 | 10 |
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°
|
6°
|
6°
|
6°
|
6°
|
5°
|
5°
|
| 300m |
7°
|
7°
|
7°
|
8°
|
8°
|
8°
|
7°
|
7°
|
| Valley |
8°
|
8°
|
8°
|
9°
|
9°
|
9°
|
8°
|
7°
|
| Freezing Level |
1,500m
|
1,600m
|
1,700m
|
1,800m
|
1,700m
|
1,600m
|
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 |
0°
|
0°
|
1°
|
1°
|
2°
|
1°
|
1°
|
1°
|
| 300m |
4°
|
4°
|
4°
|
5°
|
5°
|
5°
|
5°
|
5°
|
| Valley |
5°
|
5°
|
6°
|
6°
|
7°
|
7°
|
6°
|
6°
|
Additional weather information
Meteorologist's view
A damp and cold feeling first half of the day with rain and low cloud, which will also make for tricky navigation. Dry later but low cloud mostly persisting.
Weather
Cloudy with rain in the morning, which may be heavy at times. Turning dry through the afternoon with a few clear spells developing. Fresh southeasterly winds and feeling cold.
Chance of cloud-free hill tops
Nil through morning and early afternoon. 20% chance thereafter.
Low cloud and visibility
Widespread low cloud down to 500m with some bases to lower slopes at times. A few breaks in the cloud possible later in the day but tops remaining mostly in cloud cover. Outside of cloud, visibility mostly good but poor in low cloud and rain.
Mountain weather information
Weather
Another mostly cloudy day with outbreaks of rain, turning drier later. Light easterly winds. Feeling cold on higher routes.
Chance of cloud-free hill tops
Nil becoming 30% in the evening.
Maximum wind speed expected
Easterly 15-20mph gusting 20-25mph.
Temperature
- At 700m Plus 5 Celsius.
- Valley Plus 8-9 Celsius.
- Freezing level Above summits.
Low cloud and visibility
Widespread low cloud down to 500m with falling below this at times. Breaks in the cloud developing through the evening. Outside of cloud, visibility mostly good but poor in low cloud and rain.
Mountain weather information
Wed 24 Dec
Sunrise:
Sunset:
High pressure building. Dry and mostly cloudy with bright spells, turning colder. Fresh easterly winds. Freezing level 700m.
Thu 25 Dec
Sunrise:
Sunset:
Dry with sunny spells. Rather cold. Fresh easterly winds. Freezing level 500m.
Fri 26 Dec
Sunrise:
Sunset:
Dry with sunny spells. Rather cold. Fresh northeasterly winds. Freezing level 500m.
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.