Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for changeable weather to continue for the next few days
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.
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
Isolated wintry showers in the morning, dry in the afternoon
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
30% | 20% | 20% | 10% | 10% | 30% |
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
43
|
NW
37
|
NW
33
|
NW
30
|
W
26
|
W
27
|
| 300m |
NW
20
|
NW
21
|
NW
20
|
NW
17
|
W
13
|
W
10
|
| Valley |
NW
14
|
NW
16
|
NW
16
|
NW
14
|
NW
9
|
W
8
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 60 | 51 | 47 | 41 | 36 | 37 |
| 300m | 38 | 36 | 34 | 30 | 24 | 21 |
| Valley | 35 | 34 | 33 | 30 | 22 | 20 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
2°
|
3°
|
4°
|
5°
|
5°
|
5°
|
| 300m |
4°
|
6°
|
8°
|
8°
|
7°
|
7°
|
| Valley |
5°
|
7°
|
9°
|
10°
|
9°
|
8°
|
| Freezing Level |
700m
|
800m
|
900m
|
1,100m
|
2,100m
|
2,000m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-7°
|
-5°
|
-2°
|
-1°
|
-1°
|
0°
|
| 300m |
-2°
|
1°
|
4°
|
4°
|
4°
|
4°
|
| Valley |
1°
|
3°
|
6°
|
6°
|
6°
|
6°
|
Additional weather information
Meteorologist's view
Strong to gale summit winds for most of the day will make for slow progress and significant wind chill.
Weather
Clear or sunny intervals and occasional, mostly light showers in the morning, these wintry on the tops. The afternoon will be dry and cloudy. Cloudy in the evening with occasional light rain spreading from the west.
Chance of cloud-free hill tops
80%
Low cloud and visibility
Patchy cloud down to 900 metres at times shrouding the higher summits, otherwise excellent visibility with great air clarity for much of the day. Low cloud will spread from the west in the evening and lower to 700 metres.
Mountain weather information
Weather
A little light rain in the early hours. Otherwise it will be a dry day with variable amounts of cloud and a few bright intervals.
Chance of cloud-free hill tops
60%, best chance in the afternoon
Maximum wind speed expected
Southwesterly 20 mph
Temperature
- At 700m Plus 6 Celsius
- Valley Plus 8 rising to 14 Celsius
- Freezing level Above the summits
Low cloud and visibility
Poor in cloud down to 400 to 700 metres, this breaking and lifting off the summits by late morning. Good visibility with patchy cloud around 900 metres in the afternoon.
Mountain weather information
Wed 1 Apr
Sunrise:
Sunset:
Rain will spread southeast during the morning, turning drier and colder from the northwest in the afternoon. Freezing level falling to 800 metres during the afternoon.
Thu 2 Apr
Sunrise:
Sunset:
After a dry morning rain, sleet and summit snow will spread east in the afternoon. Drier in the evening. Freezing level 400 to 800 metres.
Fri 3 Apr
Sunrise:
Sunset:
Occasional rain or summit snow at first then dry for a time. Rain likely to spread east later. Freezing level 400 metres rising above summits later.
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.