Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for mostly cloudy with occasional rain through Wednesday and Thursday and for becoming settled over the weekend, but a little lower for timing of the precipitation and cloud details over the weekend.
This evening forecast
A few wintry showers at first, otherwise a dry evening with late sunny, then clear, spells. Feeling cold with strong northwesterly winds, gusts around 45mph over ridges and summits.
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
Mostly cloudy with outbreaks of rain for a time. Northwesterly winds easing
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
|
|
Chance of precipitation (at 700m) |
<05% | <05% | <05% | 10% | 50% | 30% | 10% | 10% |
Wind direction and speed (mph)
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
NW
28
|
NW
24
|
NW
23
|
NW
19
|
NW
11
|
NW
8
|
NW
11
|
NW
11
|
| 300m |
NW
14
|
NW
13
|
NW
12
|
NW
12
|
NW
8
|
NW
6
|
NW
6
|
NW
5
|
| Valley |
NW
11
|
NW
10
|
NW
10
|
NW
10
|
NW
6
|
W
4
|
NW
5
|
NW
5
|
Wind gust (mph)
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m | 39 | 34 | 33 | 28 | 16 | 13 | 16 | 14 |
| 300m | 26 | 24 | 23 | 21 | 14 | 11 | 11 | 10 |
| Valley | 24 | 23 | 22 | 20 | 13 | 10 | 11 | 10 |
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
0°
|
0°
|
0°
|
1°
|
2°
|
3°
|
3°
|
2°
|
| 300m |
3°
|
2°
|
2°
|
4°
|
4°
|
5°
|
6°
|
4°
|
| Valley |
4°
|
4°
|
4°
|
5°
|
6°
|
6°
|
6°
|
5°
|
| Freezing Level |
600m
|
600m
|
600m
|
700m
|
800m
|
1,200m
|
1,200m
|
1,100m
|
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
-7°
|
-7°
|
-7°
|
-5°
|
-3°
|
0°
|
-1°
|
-2°
|
| 300m |
-2°
|
-2°
|
-2°
|
0°
|
1°
|
3°
|
4°
|
2°
|
| Valley |
0°
|
0°
|
0°
|
2°
|
3°
|
5°
|
5°
|
4°
|
Additional weather information
Meteorologist's view
Feeling very cold in the strong northwesterly winds through the morning, with gusts around 45mph over ridges and summits.
Weather
Dry with clear spells through the early hours. Then a bright start but cloud soon increasing with outbreaks of rain developing towards midday, preceded briefly by a little sleet or snow over the higher summits. The rain clears away south through the afternoon and the cloud breaks to give some late sunny then clear spells.
Chance of cloud-free hill tops
Close to 100% falling close to zero by late morning, chances then improving to 60% by early evening.
Low cloud and visibility
Little or no cloud below the summits at first but periods or persistent cloud above 450-600m developing by midday, the cloud then becoming more occasional at times above about 600m by early evening. Otherwise visibility very good or excellent falling to several kilometres in rain, and perhaps a kilometre in any summit snow.
Mountain weather information
Weather
Dry with clear spells through the early hours but cloud increasing above the summits to leave a cloudy morning with outbreaks of rain, spreading southeast from late morning. Then a mostly cloudy afternoon with further outbreaks of rain. Becoming drier through the evening with some clear spells developing.
Chance of cloud-free hill tops
Close to 100% falling close to zero by midday. Chances improve again through the evening.
Maximum wind speed expected
Northwesterly 10mph or less backing more westerly 15mph through the morning, then increasing 20-25mph in the afternoon, with gusts around 40mph over ridges and summits.
Temperature
- At 700m Around plus 1 Celsius rising to plus 4 Celsius.
- Valley Plus 2 or 3 Celsius through the early hours rising to plus 11 or 12 Celsius by day.
- Freezing level Above the summits.
Low cloud and visibility
Little or no cloud below the summits at dawn but periods or persistent cloud above 600-750m developing by midday and then lowering to 450m at times in the afternoon, cloud becoming more occasional in the evening. Away from cloud visibility very good falling to several kilometres in rain.
Mountain weather information
Fri 19 Apr
Sunrise:
Sunset:
Mainly dry with sunny spells. Occasionally strong northwesterly winds easing. Freezing level above the summits.
Sat 20 Apr
Sunrise:
Sunset:
Dry and bright with long spells of sunshine. Light, variable winds. Freezing level above the summits.
Sun 21 Apr
Sunrise:
Sunset:
Another dry and bright day, a little more cloud than Saturday. Mainly light winds. 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.