Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for trend to changeable but milder southwesterly type, medium for daily details, lower on Sunday.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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.
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
Dry but cloudy until mid afternoon then a spell of mostly light rain and summit snow. Summit fog.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
30% | 20% | 10% | 60% | 10% | 10% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
E
17
|
SE
10
|
S
6
|
SW
10
|
W
27
|
W
26
|
| 300m |
E
8
|
E
5
|
S
4
|
SW
7
|
W
12
|
W
10
|
| Valley |
E
7
|
E
3
|
S
4
|
SW
5
|
W
10
|
W
9
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 25 | 15 | 8 | 14 | 39 | 39 |
| 300m | 16 | 10 | 7 | 10 | 24 | 23 |
| Valley | 15 | 9 | 7 | 10 | 24 | 22 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
0°
|
0°
|
1°
|
1°
|
2°
|
1°
|
| 300m |
2°
|
3°
|
4°
|
4°
|
4°
|
2°
|
| Valley |
4°
|
4°
|
5°
|
5°
|
5°
|
3°
|
| Freezing Level |
600m
|
600m
|
700m
|
800m
|
800m
|
700m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-6°
|
-4°
|
-2°
|
-3°
|
-4°
|
-6°
|
| 300m |
-1°
|
1°
|
2°
|
1°
|
0°
|
-1°
|
| Valley |
1°
|
3°
|
4°
|
4°
|
2°
|
0°
|
Additional weather information
Meteorologist's view
Tabular values look reasonable with strongest winds in the hours of darkness.
Weather
The day will be cloudy, but it should be dry until early afternoon. Then cloud thickening to bring occasional mainly light rain, with sleet or snow above 700m, this clearing again in the evening, with cloud then breaking.
Chance of cloud-free hill tops
20% overnight, rising 70% during morning, falling 30% in rain and snow later afternoon, rising 90% in evening.
Low cloud and visibility
Overcast cloud bases 450-600m in early hours, lifting 800m or higher in morning, before dropping 600-700m for a time later afternoon, then breaking and lifting above summits in evening. Visibility below cloud mostly good but occasionally poor in precipitation later in afternoon.
Mountain weather information
Weather
Starting dry in early hours but cloudy with heavy rain late in the night and at first in the morning. This soon clearing to leave broken cloud and occasional showers, briefly heavy. A drier evening but more cloud and rain towards midnight.
Chance of cloud-free hill tops
20% at daybreak rising 80-90% during the morning
Maximum wind speed expected
West or Southwest 35 gusts 50mph
Temperature
- At 700m Plus 4 Celsius
- Valley Plus 6 rising to Plus 10 Celsius
- Freezing level Above summits
Low cloud and visibility
Extensive cloud at 500-750m at first with poor visibility in rain then cloud breaking and mainly above 800m with good visibility, briefly dropping to a few km in any heavier showers that pass through.
Mountain weather information
Sat 21 Feb
Sunrise:
Sunset:
Cloudy with spells of rain and some hill fog. Strong to gale southwesterly winds.
Sun 22 Feb
Sunrise:
Sunset:
Probably a slightly brighter day with occasional showers and patchy hill fog. However a chance of more generally overcast with more persistent rain. Fresh southwesterly winds.
Mon 23 Feb
Sunrise:
Sunset:
A brighter day with sunny intervals and passing showers, wintry on tops with freezing level just above summits. Gales and rain perhaps arriving in evening.
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.