Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence in unsettled weather but low confidence for details on Sunday.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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
Often dry, bright. The odd afternoon shower. Still quite cold.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
00% | 00% | <05% | 20% | <05% | <05% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
NW
21
|
NW
20
|
W
16
|
W
17
|
W
15
|
SW
14
|
| 300m |
NW
10
|
NW
9
|
W
8
|
W
6
|
W
7
|
SW
6
|
| Valley |
NW
9
|
NW
8
|
W
7
|
W
6
|
W
7
|
SW
6
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 29 | 28 | 24 | 24 | 21 | 20 |
| 300m | 19 | 17 | 15 | 13 | 14 | 11 |
| Valley | 18 | 17 | 16 | 14 | 14 | 12 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
4°
|
4°
|
4°
|
4°
|
3°
|
2°
|
| 300m |
4°
|
4°
|
6°
|
6°
|
4°
|
4°
|
| Valley |
5°
|
5°
|
7°
|
6°
|
5°
|
4°
|
| Freezing Level |
1,000m
|
1,100m
|
1,100m
|
1,100m
|
1,000m
|
1,000m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-2°
|
-1°
|
-1°
|
-1°
|
-2°
|
-2°
|
| 300m |
1°
|
1°
|
4°
|
3°
|
1°
|
1°
|
| Valley |
2°
|
2°
|
5°
|
4°
|
2°
|
2°
|
Additional weather information
Meteorologist's view
Windy conditions in the early morning will make for fairly arduous walking on exposed terrain with buffeting of clothing. Balance may be affected at times.
Weather
Widespread cloud and rain in the early hours will clear east before dawn as strong southwest winds also ease down. Then a largely dry day with bright or sunny spells. Chance of the odd shower through the afternoon which may just about turn sleety over Slieve Donard. Feeling less cold than recent days, but still quite chilly at height.
Chance of cloud-free hill tops
Rising to 80% or higher through morning. Falling to 50% for a time in the afternoon.
Low cloud and visibility
Widespread low cloud and poor visibilities in the early hours as rain clears east. Then summits largely clear with good visibilities aside from a few patches of fog or hill fog lingering in valleys through the morning, below 300-400m. Cloud becomes more widespread down to 400-600m for a time in the afternoon as a few showers pass through. Some areas of valley fog or low cloud over lower elevations may begin to form again through the evening.
Mountain weather information
Weather
Widespread cloud and rain through the early morning, this heavy at times with the very small chance of some lightning. Remaining cloudy through the day as the rain turns more showery from mid- to late morning onwards. Showers may contain an element of sleet over the very highest summits.
Chance of cloud-free hill tops
20% or less throughout the day.
Maximum wind speed expected
South veering west then North or northwest later, 30-40mph, with a chance of summit gales.
Temperature
- At 700m 0C to plus 2C
- Valley plus 4C to plus 7C
- Freezing level 800-1000m
Low cloud and visibility
Widespread cloud down to 300-500m throughout the day with visibilities falling moderate or poor in rain, showers, and hill fog. Small chance of limited, temporary breaks between showers through the afternoon.
Mountain weather information
Mon 24 Nov
Sunrise:
Sunset:
Often dry with clear spells, chance of a few showers. Freezing level 700-900m. Fresh to strong north to northwest winds.
Tue 25 Nov
Sunrise:
Sunset:
Mostly dry and bright. Chance of a few showers in the morning. Freezing level 800-1000m. Fresh northwest winds ease and back southwesterly.
Wed 26 Nov
Sunrise:
Sunset:
Cloudy with outbreaks of rain. Strong southwest winds. Freezing level rises well above summits.
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.