Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
Some uncertainty on the extent of any showers during Sunday. High confidence on the change to much more unsettled and windier conditions from Tuesday.
This evening forecast
A mainly dry evening with patchy cloud and some clear spells. A risk of mist and fog patches developing in sheltered valleys.
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
Becoming mostly dry and bright during daytime.
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
|
|
Chance of precipitation (at 700m) |
40% | 40% | 30% | 20% | 20% | 10% | 10% | 10% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
SE
19
|
S
20
|
S
20
|
S
21
|
S
19
|
S
18
|
S
17
|
S
18
|
| 300m |
SE
9
|
S
10
|
S
10
|
SE
11
|
S
12
|
S
11
|
S
9
|
S
10
|
| Valley |
SE
7
|
S
8
|
S
9
|
SE
10
|
S
11
|
S
10
|
S
9
|
S
9
|
Wind gust (mph)
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m | 26 | 28 | 27 | 30 | 27 | 25 | 24 | 26 |
| 300m | 16 | 18 | 18 | 20 | 20 | 18 | 17 | 19 |
| Valley | 16 | 17 | 18 | 20 | 20 | 18 | 17 | 18 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
3°
|
3°
|
3°
|
3°
|
3°
|
3°
|
2°
|
2°
|
| 300m |
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
4°
|
4°
|
| Valley |
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
5°
|
| Freezing Level |
1,100m
|
1,100m
|
1,000m
|
1,000m
|
1,000m
|
1,000m
|
1,000m
|
900m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-3°
|
-2°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
| 300m |
2°
|
2°
|
1°
|
1°
|
2°
|
2°
|
1°
|
0°
|
| Valley |
3°
|
3°
|
3°
|
2°
|
3°
|
3°
|
3°
|
2°
|
Additional weather information
Meteorologist's view
Feeling cold on summits with the sub-zero wind chill.
Weather
Most showers will tend to die out through the early hours. Otherwise, a bright day with a few patches of cloud and hill fog coming and going. Mainly dry with just a low risk of the odd light shower. Moderate to fresh winds on summits giving an increased windchill.
Chance of cloud-free hill tops
60%, best chances in the afternoon.
Low cloud and visibility
Occasional patches of cloud with bases around 600-700m, most frequent in the morning. Otherwise visibility will be good below these cloud bases.
Mountain weather information
Weather
A bright but fairly cloudy day with a few patches of cloud on summits. A few sunnier spells are possible at times, however the odd shower can't be ruled out in the afternoon. Moderate winds.
Chance of cloud-free hill tops
60%
Maximum wind speed expected
10-15mph gusting 25mph.
Temperature
- At 700m Plus 2 Celsius.
- Valley Plus 5 rising 8 Celsius.
- Freezing level 1000m.
Low cloud and visibility
A few patches of cloud with bases around 600-700m coming and going through the day. Otherwise visibility will be good below cloud bases.
Mountain weather information
Tue 20 Jan
Sunrise:
Sunset:
Dry start but rain spreads north during the day. Strong winds and summits gales. Freezing level above summits.
Wed 21 Jan
Sunrise:
Sunset:
Spells of rain, occasionally heavy. Strong winds and summit gales or severe gales. Freezing level mostly above summits.
Thu 22 Jan
Sunrise:
Sunset:
Remaining unsettled with risk of rain or showers. 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.