Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence for generally settled conditions with high pressure dominating, but lower confidence in cloud amounts.
This evening forecast
Dry with clear spells and variable amounts of cloud, which will be down to 600-800m where patches occur. Easterly winds 30-40mph, gusting 40-45mph at times, especially to the western lee side. Feeling bitterly cold at height with strong winds creating a severe wind chill.
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.
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.
Mountain weather forecast
Dry with variable cloud and bright spells. Cold. Quite windy.
| 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) |
<05% | <05% | <05% | <05% | <05% | <05% | <05% | <05% |
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
23
|
E
22
|
E
22
|
E
25
|
E
25
|
E
24
|
E
25
|
E
25
|
| 300m |
E
12
|
E
12
|
E
13
|
E
15
|
E
17
|
E
14
|
E
14
|
E
15
|
| Valley |
E
8
|
E
8
|
E
9
|
E
11
|
E
13
|
E
10
|
E
10
|
E
11
|
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 | 34 | 33 | 32 | 36 | 36 | 34 | 36 | 36 |
| 300m | 24 | 24 | 23 | 27 | 28 | 25 | 26 | 27 |
| Valley | 20 | 20 | 20 | 23 | 25 | 22 | 23 | 23 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
1°
|
1°
|
0°
|
0°
|
1°
|
1°
|
1°
|
1°
|
| 300m |
4°
|
3°
|
3°
|
3°
|
4°
|
4°
|
3°
|
3°
|
| Valley |
4°
|
4°
|
4°
|
4°
|
5°
|
5°
|
4°
|
4°
|
| Freezing Level |
700m
|
600m
|
600m
|
600m
|
600m
|
600m
|
700m
|
600m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-5°
|
-6°
|
-6°
|
-7°
|
-6°
|
-6°
|
-6°
|
-6°
|
| 300m |
-1°
|
-2°
|
-2°
|
-2°
|
-2°
|
-1°
|
-2°
|
-2°
|
| Valley |
1°
|
1°
|
0°
|
0°
|
1°
|
1°
|
0°
|
0°
|
Additional weather information
Meteorologist's view
Easterly winds 30-40mph, gusting 40-45mph over the highest summits at times, will make for fairly arduous walking on exposed terrain with buffeting of clothing. Balance may be affected at times. Feeling bitterly cold at height in strong winds so suitable clothing is required.
Weather
It will stay dry throughout Christmas Day. Cloudier for a time in mid to late morning, but clear and bright or sunny spells developing at times. Feeling cold in strong easterly winds.
Chance of cloud-free hill tops
70%, best chances in the afternoon and evening.
Low cloud and visibility
Areas of cloud around 600-800m at times with associated visibilities falling moderate or poor in hill fog. Otherwise plenty of clear spells and good visibilities.
Mountain weather information
Weather
Variable cloud and clear spells at first. Increasing clear or sunny spells later. Still feeling cold.
Chance of cloud-free hill tops
70% at first, increasing later.
Maximum wind speed expected
East to northeast 20-30mph, gusting 30-40mph.
Temperature
- At 700m Minus 2C to plus 1C.
- Valley 0C rising to plus 6C.
- Freezing level 600-800m.
Low cloud and visibility
Areas of cloud around 600-800m at times in the morning with associated visibilities falling moderate or poor in hill fog. Otherwise plenty of clear spells and good visibilities.
Mountain weather information
Sat 27 Dec
Sunrise:
Sunset:
Dry start with bright spells. Becoming increasingly cloudy. Staying cold with freezing level around 800-1000m. Strong easterly winds.
Sun 28 Dec
Sunrise:
Sunset:
Cloudy but mostly dry, the odd spot of drizzle possible. Staying cold with freezing level around 800m. Fresh to moderate easterly winds.
Mon 29 Dec
Sunrise:
Sunset:
Cloudy but mostly dry, the odd spot of drizzle possible. Staying cold with freezing level around 600-800m. Light winds.
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.