Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence in the unsettled conditions continuing the rest of this week, but some uncertainty on the extent of rainfall expected this weekend.
This evening forecast
Showery outbreaks of rain clearing leaving mainly dry conditions with lengthy clear periods.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Gales
Gale force winds (gusts over 50mph) make walking difficult and strenuous with a potential to be blown over by gusts. There is often a marked increase in winds through cols or on exposed ridges and summits. Distances can take longer to cover and compass bearings become harder to follow accurately.
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
Mainly dry with sunny spells, especially in the afternoon. Very windy with significant wind chill.
| 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) |
30% | 30% | 30% | 20% | 10% | <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 |
SW
34
|
SW
36
|
SW
37
|
SW
35
|
SW
32
|
SW
26
|
SW
25
|
SW
25
|
| 300m |
SW
19
|
SW
20
|
SW
21
|
SW
20
|
SW
18
|
SW
15
|
SW
14
|
SW
13
|
| Valley |
SW
15
|
SW
17
|
SW
17
|
SW
17
|
SW
16
|
SW
13
|
SW
11
|
SW
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 | 47 | 50 | 52 | 50 | 45 | 37 | 35 | 35 |
| 300m | 32 | 35 | 36 | 35 | 32 | 26 | 24 | 23 |
| Valley | 30 | 33 | 34 | 33 | 31 | 25 | 23 | 22 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
0°
|
2°
|
2°
|
2°
|
3°
|
3°
|
2°
|
2°
|
| 300m |
3°
|
4°
|
5°
|
5°
|
6°
|
6°
|
5°
|
4°
|
| Valley |
4°
|
5°
|
6°
|
6°
|
7°
|
7°
|
6°
|
5°
|
| Freezing Level |
700m
|
1,000m
|
1,100m
|
1,100m
|
1,000m
|
1,000m
|
1,000m
|
1,100m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-8°
|
-6°
|
-5°
|
-5°
|
-4°
|
-3°
|
-4°
|
-4°
|
| 300m |
-3°
|
-2°
|
-1°
|
0°
|
1°
|
1°
|
0°
|
0°
|
| Valley |
-1°
|
0°
|
2°
|
2°
|
3°
|
3°
|
2°
|
2°
|
Additional weather information
Meteorologist's view
Gusts to around 50mph in the morning at height will give difficult walking conditions with a significant risk of being blown off balance. Also note the significant wind chill.
Weather
A bright and very blusterly day. Mainly dry but a few showers possible early morning then the best of the sunny spells in the afternoon. Gales at height but easing slightly in the afternoon.
Chance of cloud-free hill tops
70% rising to 90% in the afternoon.
Low cloud and visibility
Mainly clear of low cloud and with generally good visibility. Perhaps a few patches of cloud around summits during the morning in association with showers.
Mountain weather information
Weather
Mainly cloudy with some patchy hill fog and an increasing risk of showers or spells of rain into the afternoon. Gales at height.
Chance of cloud-free hill tops
60% decreasing to 30% in the afternoon.
Maximum wind speed expected
Gusting 45-55mph.
Temperature
- At 700m Plus 5 Celsius.
- Valley Plus 8 Celsius rising plus 10 Celsius.
- Freezing level Well above summits.
Low cloud and visibility
Patchy hill fog on upslopes in the morning above 600m, cloud thickening and perhaps lowering in outbreaks of rain through the day. Visibility will be generally good below cloud bases, but deteriorating to a couple of kilometres in rain or showers.
Mountain weather information
Sun 21 Dec
Sunrise:
Sunset:
Cloudy with outbreaks of rain, possibly heavy at times with strong summit winds. Freezing level above summits.
Mon 22 Dec
Sunrise:
Sunset:
Another rather cloudy day with spells of rain, but some drier, brighter conditions likely developing. Moderate to fresh summit winds and freezing level above summits.
Tue 23 Dec
Sunrise:
Sunset:
Variable amounts of cloud and generally dry. Moderate to fresh summit winds. Freezing level 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.