Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for a change to much colder weather. High for changeable weather to continue.
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.
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.
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
Cold with snow at first, then dry and brightening up
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
40% | 20% | 00% | 00% | 00% | 00% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
NE
36
|
NE
34
|
NE
26
|
N
25
|
N
24
|
N
22
|
| 300m |
NE
16
|
NE
15
|
NE
15
|
N
14
|
N
11
|
N
10
|
| Valley |
NE
12
|
NE
11
|
NE
12
|
N
12
|
N
9
|
N
8
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 51 | 48 | 36 | 35 | 35 | 31 |
| 300m | 31 | 30 | 26 | 25 | 22 | 20 |
| Valley | 30 | 27 | 24 | 24 | 21 | 19 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-2°
|
-2°
|
-1°
|
-1°
|
-2°
|
-2°
|
| 300m |
0°
|
0°
|
2°
|
2°
|
0°
|
-1°
|
| Valley |
1°
|
2°
|
3°
|
4°
|
1°
|
0°
|
| Freezing Level |
300m
|
200m
|
300m
|
300m
|
100m
|
0m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-12°
|
-12°
|
-9°
|
-8°
|
-9°
|
-9°
|
| 300m |
-6°
|
-6°
|
-4°
|
-3°
|
-5°
|
-6°
|
| Valley |
-3°
|
-3°
|
-1°
|
-1°
|
-3°
|
-4°
|
Additional weather information
Meteorologist's view
Be prepared for severe wind chill throughout the day.
Weather
Snow in the early hours will die out by mid-morning. Then the rest of the day will be dry although cloud will take until the afternoon to break up. Bitterly cold northeasterly winds will slowly ease through the day.
Chance of cloud-free hill tops
70%
Low cloud and visibility
Poor in low cloud down to 250 to 500 metres at first, this lifting through the morning with patches above 900 metres in the afternoon. Excellent visibility in the afternoon.
Mountain weather information
Weather
Dry and cold although a fair amount of high cloud around. Strengthening southerly winds will bring sleet and snow later in the evening.
Chance of cloud-free hill tops
80%
Maximum wind speed expected
Southerly 15 mph for most of the day, but strengthening to average speeds of 35 mph with gusts to 55 mph after dark.
Temperature
- At 700m 0 Celsius
- Valley Minus 3 rising to 4 Celsius
- Freezing level 400 to 700 metres
Low cloud and visibility
Excellent visibility with little in the way of summit cloud for most of the day. Cloud lowering down to 700 metres as snow arrives in the evening.
Mountain weather information
Sun 15 Feb
Sunrise:
Sunset:
Sunny spells with a chance of showers, some snow on the tops.
Mon 16 Feb
Sunrise:
Sunset:
Remaining unsettled with a chance of showers or some longer spells of sleet or snow.
Tue 17 Feb
Sunrise:
Sunset:
Dry with variable amounts of cloud.
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.