
Mourne Mountains Mountain weather forecast table
Confidence
High for changeable conditions next few days, lower for timing and intensity of rain bands
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Severe Chill Effect
Poor Visibility
Gales
Thunderstorms
Heavy Persistent Rain
Mountain weather forecast
A very mixed day with bands of rain and some drier brighter spells, Windy with summit gales possible.
06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
40% | 70% | 20% | 60% | 80% | 20% |
06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
---|---|---|---|---|---|---|
600m |
SW
20
|
S
25
|
SW
27
|
SW
29
|
S
23
|
NW
23
|
300m |
SW
5
|
SE
10
|
SW
14
|
SW
12
|
S
12
|
NW
13
|
Valley |
S
2
|
SE
8
|
SW
12
|
SW
10
|
S
10
|
NW
11
|
06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
---|---|---|---|---|---|---|
600m | 29 | 35 | 38 | 40 | 33 | 32 |
300m | 14 | 21 | 25 | 24 | 23 | 23 |
Valley | 13 | 20 | 25 | 24 | 21 | 23 |
06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
---|---|---|---|---|---|---|
600m |
3°
|
3°
|
5°
|
5°
|
4°
|
4°
|
300m |
4°
|
5°
|
7°
|
6°
|
6°
|
6°
|
Valley |
5°
|
6°
|
8°
|
8°
|
7°
|
7°
|
Freezing Level |
1,000m
|
1,300m
|
1,200m
|
1,200m
|
1,300m
|
1,300m
|
06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
---|---|---|---|---|---|---|
600m |
-2°
|
-3°
|
-1°
|
-1°
|
-2°
|
-2°
|
300m |
2°
|
2°
|
4°
|
3°
|
3°
|
2°
|
Valley |
4°
|
3°
|
5°
|
5°
|
4°
|
4°
|
Additional weather information
Meteorologist's view
Winds may reach gusts of around 50 mph across summits around middle of the day.
Weather
Heavy rain, perhaps sleet on the tops clearing by late morning with sunny spells for a time. A chance of isolated heavy showers early afternoon. More persistent often heavy rain towards dusk. Turning dry late evening.
Chance of cloud-free hill tops
20% from dawn improving 80% by midday then falling 20% by dusk.
Low cloud and visibility
Spells of low cloud and poor visibility accompanying the rainy spells in the morning and evening, with cloud down to 450-600m, but at other times, low cloud breaking up with good visibility for a few hours in the afternoon.
Mountain weather information
Weather
A few showers in early hours, dying out. The day dry and bright with some sunny spells. Clouding over after dark with some heavy rain developing by mid evening.
Chance of cloud-free hill tops
60% early hours improving 90% during the day, falling 20% in the evening rain.
Maximum wind speed expected
West 30 gusts 40mph in early hours then easing 15 gusts 25mph by daybreak. Winds becoming southeasterly in evening.
Temperature
- At 700m Plus 3 Celsius.
- Valley Plus 5 rising to Plus 8 Celsius.
- Freezing level Above the summits.
Low cloud and visibility
Occasional cloud at 600m at first this dispersing to bring good visibility through daylight hours. Then low cloud at 450-600m and poor visibility developing in evening rain.
Mountain weather information
Tue 12 Dec
Cloudy with occasional rain, hill fog and strengthening northeasterly winds.
Wed 13 Dec
Dry and bright with sunny spells, freezing level dropping to 750m.
Thu 14 Dec
Some overnight rain, then the day bright with sunny intervals and the odd light shower. Freezing levels above tops.
Summit specific forecast
Mountain summit forecast map
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.
The Mourne Mountains include the highest mountains in Northern Ireland; the highest of these is Slieve Donard standing at 850 metres at the northeastern edge of the Mournes, overlooking Newcastle and Dundrum Bay. At the summit of Slieve Donard there is a cairn and a small stone tower, which is part of the Mourne Wall, which passes over the mountain’s southern and western shoulders.
The Mourne Wall is a 35 kilometre dry stone wall that crosses fifteen summits, constructed between 1904 and 1922 by the Belfast Water Commissioners to define and enclose the catchment area for the newly constructed Silent Valley Reservoir.v