Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence on the cloudy conditions on Tuesday followed by much brighter, colder but mainly dry conditions from Wednesday.
This evening forecast
A cloudy evening with hill fog. Fresh summit winds. 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
A cloudy day with hill fog and spots of light rain or drizzle.
| 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% | 30% | 30% | 30% | 30% | 10% | 10% | 10% |
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
13
|
E
15
|
E
15
|
E
14
|
E
13
|
NE
12
|
NE
15
|
NE
15
|
| 300m |
E
7
|
E
10
|
E
10
|
E
9
|
E
8
|
NE
7
|
NE
8
|
NE
8
|
| Valley |
E
5
|
E
8
|
E
8
|
E
7
|
E
7
|
NE
6
|
NE
6
|
NE
6
|
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 | 19 | 22 | 21 | 19 | 19 | 18 | 21 | 21 |
| 300m | 13 | 17 | 16 | 14 | 14 | 13 | 14 | 14 |
| Valley | 12 | 15 | 15 | 13 | 13 | 11 | 12 | 12 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
6°
|
5°
|
5°
|
5°
|
5°
|
5°
|
4°
|
4°
|
| 300m |
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
6°
|
6°
|
| Valley |
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
7°
|
7°
|
| Freezing Level |
1,600m
|
1,700m
|
1,800m
|
1,800m
|
1,800m
|
1,900m
|
1,900m
|
1,800m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
2°
|
1°
|
1°
|
1°
|
1°
|
1°
|
0°
|
-1°
|
| 300m |
5°
|
4°
|
4°
|
4°
|
5°
|
5°
|
4°
|
3°
|
| Valley |
7°
|
6°
|
6°
|
6°
|
7°
|
6°
|
5°
|
5°
|
Additional weather information
Meteorologist's view
Note the increased wind chill in damp conditions. Challenging navigation at height in poor visbility.
Weather
A cloudy day with some hill fog and a few spots of light rain or drizzle possible, especially during the morning.
Chance of cloud-free hill tops
10% rising to 30% in the afternoon.
Low cloud and visibility
Extensive cloud bases 300-400m in the morning, lifting to around 500m and perhaps breaking up slightly in the afternoon. Visiblity will be a few kilometres beneath cloud bases, deteriorating in any drizzle.
Mountain weather information
Weather
A few patches of hill fog in the morning, otherwise a brighter but colder day than Tuesday. Remaining generally dry with some sunny spells. Notable wind chill at height.
Chance of cloud-free hill tops
40% at first rising to 80%.
Maximum wind speed expected
Gusting 20-25mph on summits and ridges.
Temperature
- At 700m Plus 3 decreasing 0 Celsius.
- Valley Plus 6 Celsius.
- Freezing level Above summits at first, falling to 700m.
Low cloud and visibility
Patches of cloud with bases around 600m on easterly upslopes in the morning, otherwise main cloud bases will be above summits.
Mountain weather information
Thu 25 Dec
Sunrise:
Sunset:
Another rather cold but dry and bright day with sunny spells. Fresh to strong winds at height with significant wind chill. Freezing level 600m.
Fri 26 Dec
Sunrise:
Sunset:
Remaining cold and bright with variable amounts of cloud. Moderate to fresh summit winds. Freezing level 700m
Sat 27 Dec
Sunrise:
Sunset:
Dry and bright with patches of cloud. Moderate to fresh summit winds. Freezing level 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.