Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for the general weather story with cold conditions giving way to very unsettled and milder weather through the weekend.
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 sunny spells. Strong winds and a chance of snow showers later.
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
00% | 00% | 00% | 00% | 20% | 60% |
Wind direction and speed (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
N
21
|
N
24
|
NW
27
|
NW
30
|
NW
38
|
NW
39
|
| 300m |
N
13
|
N
13
|
NW
16
|
NW
19
|
NW
22
|
NW
22
|
| Valley |
N
12
|
N
12
|
NW
15
|
NW
15
|
NW
18
|
NW
18
|
Wind gust (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m | 30 | 33 | 36 | 42 | 52 | 54 |
| 300m | 22 | 23 | 27 | 32 | 38 | 39 |
| Valley | 21 | 23 | 26 | 29 | 35 | 35 |
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
-3°
|
-3°
|
-3°
|
-2°
|
-3°
|
-2°
|
| 300m |
-1°
|
-1°
|
0°
|
0°
|
-1°
|
0°
|
| Valley |
0°
|
0°
|
1°
|
2°
|
0°
|
1°
|
| Freezing Level |
0m
|
0m
|
100m
|
200m
|
100m
|
200m
|
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
-10°
|
-12°
|
-12°
|
-11°
|
-13°
|
-12°
|
| 300m |
-6°
|
-7°
|
-6°
|
-6°
|
-8°
|
-8°
|
| Valley |
-5°
|
-6°
|
-4°
|
-4°
|
-6°
|
-5°
|
Additional weather information
Meteorologist's view
Bitterly cold but dry for most of the day. Strong to gale force winds later with a severe wind chill.
Weather
Mainly dry and very cold with high cloud giving way to sunny spells. A chance of snow showers arriving from the north during the evening accompanied by strong northwesterly winds.
Chance of cloud-free hill tops
90%, becoming 60% later when snow showers arrive.
Low cloud and visibility
Generally excellent visibility with clear views of distant hills. Becoming poor at times later when snow showers arrive with occasional cloud above 600m.
Mountain weather information
Weather
Snow showers dying out around midnight then dry and clear. Friday will be dry and bright with long sunny spells. Still feeling very cold.
Chance of cloud-free hill tops
90%.
Maximum wind speed expected
Northwest 30 gusts 40mph decreasing 10-15mph.
Temperature
- At 700m Minus 3C.
- Valley Minus 1C rising to 4C.
- Freezing level 200m rising to 500m.
Low cloud and visibility
Mainly excellent visibility.
Mountain weather information
Sat 23 Nov
Sunrise:
Sunset:
Periods of heavy rain, preceded by snow for a time in the morning above 400m. Severe gale or storm force southeasterly winds. Freezing level 400m rising above summits by the afternoon.
Sun 24 Nov
Sunrise:
Sunset:
Heavy rain clearing by morning then bright spells and occasional rain showers. Very windy with southerly gales. Freezing level above summits.
Mon 25 Nov
Sunrise:
Sunset:
Very unsettled with showers or longer spells of rain moving in from the west. Strong to gale force westerly 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.