Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for mainly dry and settled conditions. Medium for cloud amounts from Tuesday.
This evening forecast
Cloudy with some hill fog, the cloud tending to lift and break. Patchy light rain and drizzle dying out.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Strong sunlight
Harmful UV levels from sunlight increase with altitude giving a greater risk of sunburn and eye damage, even on some overcast days. On breezy days, the cooling effect of wind on exposed skin may disguise any feeling of sunburn until it is too late. If there is snow cover, glare increases the effect of UV rays especially on the eyes. It is advisable to wear sun block, protective clothing such as a long-sleeved top and hat and have good quality eye protection.
Mountain weather forecast
Mainly dry with some bright spells.
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
|
|
Chance of precipitation (at 700m) |
<05% | <05% | <05% | <05% | 10% | 20% | 30% | 30% |
Wind direction and speed (mph)
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
S
16
|
S
18
|
S
16
|
S
15
|
S
15
|
S
16
|
S
15
|
S
11
|
| 300m |
S
9
|
S
11
|
S
9
|
S
11
|
S
11
|
S
11
|
S
7
|
S
6
|
| Valley |
S
8
|
S
9
|
S
8
|
S
10
|
S
10
|
S
10
|
S
6
|
S
4
|
Wind gust (mph)
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m | 23 | 26 | 24 | 23 | 23 | 25 | 22 | 15 |
| 300m | 16 | 19 | 17 | 18 | 20 | 20 | 14 | 10 |
| Valley | 15 | 18 | 16 | 18 | 19 | 19 | 13 | 9 |
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
4°
|
3°
|
3°
|
4°
|
4°
|
5°
|
4°
|
4°
|
| 300m |
6°
|
5°
|
5°
|
6°
|
7°
|
7°
|
6°
|
6°
|
| Valley |
7°
|
6°
|
6°
|
8°
|
8°
|
9°
|
8°
|
6°
|
| Freezing Level |
1,600m
|
1,100m
|
1,000m
|
1,000m
|
1,000m
|
1,100m
|
1,100m
|
1,200m
|
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
-1°
|
-2°
|
-2°
|
-1°
|
0°
|
0°
|
0°
|
0°
|
| 300m |
2°
|
2°
|
2°
|
3°
|
4°
|
4°
|
4°
|
4°
|
| Valley |
4°
|
3°
|
3°
|
5°
|
6°
|
6°
|
6°
|
5°
|
Additional weather information
Meteorologist's view
Nothing further to add.
Weather
Dry overnight with patchy cloud. A mainly dry day with some bright spells, although thicker cloud could give a few spots of rain through the afternoon and evening.
Chance of cloud-free mountain/hill tops at 700m
90% for much of daylight hours, but 60% early and late in the day.
Visibility
Mostly good or very good with cloud mainly above the summits, but occasional cloud base 600 to 900m early and late in the day with visibility moderate or poor.
Mountain weather information
Weather
Mostly cloudy with patchy light rain expected at times.
Chance of cloud-free mountain/hill tops at 700m
60%.
Maximum wind speed expected
Variable 10mph
Temperature
- At 700m Plus 5 to 8 Celsius
- Valley Plus 6 Celsius rising to 12 Celsius
- Freezing level Above the summits.
Visibility
Mostly good or very good, but occasional or extensive cloud base 600 to 900m with moderate or poor visibility over the summits.
Mountain weather information
Wednesday 21 April
Sunrise:
Sunset:
Early low cloud, mist and drizzle possible. However, mainly dry with bright and sunny spells developing. Winds light or moderate from the northeast. Freezing level well down early and late in the day, but above the summits for much of daylight hours.
Thursday 22 April
Sunrise:
Sunset:
Dry with sunny or clear spells. Light or moderate east or southeast winds over the summits. Freezing level well down early and late in the day with valley frost possible, but above the summits for much of daylight hours.
Friday 23 April
Sunrise:
Sunset:
Dry with sunny or clear spells. Light or moderate east or southeast winds at height. Freezing level well down early and late in the day with valley frost possible, but above the summits for much of daylight hours.
Updated at:
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.
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