Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
Generally high, but low for details on Tuesday, particularly winds and chance of dry spells. Low for timing of rain on Friday and details on Saturday.
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
Fresh to strong winds, some showery rain at times. Turning cold in the evening.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
50% | 10% | 30% | 30% | 20% | 60% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
W
30
|
W
34
|
W
29
|
NW
30
|
NW
30
|
N
31
|
| 300m |
W
10
|
W
13
|
W
15
|
NW
15
|
NW
16
|
N
18
|
| Valley |
W
10
|
W
11
|
W
12
|
NW
12
|
NW
13
|
N
15
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 42 | 46 | 40 | 41 | 42 | 43 |
| 300m | 22 | 27 | 27 | 27 | 28 | 31 |
| Valley | 24 | 27 | 26 | 26 | 27 | 30 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
2°
|
2°
|
2°
|
2°
|
2°
|
1°
|
| 300m |
3°
|
4°
|
5°
|
5°
|
4°
|
3°
|
| Valley |
4°
|
5°
|
6°
|
6°
|
5°
|
4°
|
| Freezing Level |
1,000m
|
1,000m
|
1,000m
|
900m
|
900m
|
700m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-6°
|
-6°
|
-5°
|
-5°
|
-6°
|
-7°
|
| 300m |
-1°
|
0°
|
1°
|
1°
|
-1°
|
-2°
|
| Valley |
1°
|
1°
|
3°
|
3°
|
1°
|
0°
|
Additional weather information
Meteorologist's view
Uncertainty in wind strength and in extent and timing of any drier spells. Note lowering freezing level in the evening.
Weather
A mostly dry day, but windy with some showery rain at times. Turning colder in the evening with some rain, snow above 300m, likely.
Chance of cloud-free hill tops
60%.
Low cloud and visibility
Often very good visibility, but falling poor at times in variable cloud, bases lowering to 400m near heavier showers.
Mountain weather information
Weather
Dry with clear skies through the early hours. Then a largely sunny day, but scattered heavy snow showers, mainly in the afternoon, with a risk of thunder. Bitterly cold in fresh to strong northerly winds.
Chance of cloud-free hill tops
80%
Maximum wind speed expected
North 25 gusting 35 mph
Temperature
- At 700m Minus 4 Celsius rising to minus 2 Celsius.
- Valley Plus 2 or 3 Celsius.
- Freezing level 200-300m.
Low cloud and visibility
Excellent visibility, but briefly falling poor in passing snow showers. Cloud generally above the summits.
Mountain weather information
Thu 20 Nov
Sunrise:
Sunset:
Dry with clear then sunny spells. Moderate to fresh northwest. Freezing level 200m rising to 300-400m.
Fri 21 Nov
Sunrise:
Sunset:
Cold, dry start. Cloud thickening and lowering with rain, snow on higher slopes, for a time. Clearing later in the day or evening. Freezing level 400m rising to 600m, then above the summits by evening.
Sat 22 Nov
Sunrise:
Sunset:
Some outbreaks of rain, possibly snow on higher summits, for a time, likely to clear later in the day. Less cold than of late. Freezing level above the 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.