Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
Medium
This evening forecast
Heavy rain and summit gales, becoming drier and clearer. Winds also decreasing and turning into southwest.
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
Bright with scattered showers. Windy.
| 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) |
30% | 30% | 30% | 30% | 30% | 30% | 50% | 60% |
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 |
SW
43
|
SW
39
|
SW
34
|
SW
30
|
SW
28
|
SW
24
|
SW
24
|
SW
19
|
| 300m |
SW
22
|
SW
20
|
SW
17
|
SW
16
|
SW
15
|
SW
13
|
SW
12
|
SW
9
|
| Valley |
SW
18
|
SW
17
|
SW
14
|
SW
12
|
SW
12
|
SW
11
|
SW
11
|
SW
8
|
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 | 60 | 54 | 47 | 41 | 38 | 34 | 34 | 27 |
| 300m | 39 | 36 | 31 | 27 | 26 | 23 | 23 | 17 |
| Valley | 38 | 35 | 30 | 25 | 24 | 23 | 21 | 16 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
4°
|
4°
|
3°
|
3°
|
4°
|
4°
|
3°
|
3°
|
| 300m |
6°
|
6°
|
5°
|
5°
|
6°
|
6°
|
5°
|
5°
|
| Valley |
7°
|
7°
|
6°
|
6°
|
7°
|
8°
|
6°
|
6°
|
| Freezing Level |
1,200m
|
1,200m
|
1,200m
|
1,200m
|
1,200m
|
1,200m
|
1,200m
|
1,100m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-4°
|
-4°
|
-4°
|
-4°
|
-3°
|
-2°
|
-3°
|
-3°
|
| 300m |
1°
|
1°
|
1°
|
0°
|
2°
|
3°
|
2°
|
2°
|
| Valley |
3°
|
3°
|
3°
|
2°
|
4°
|
5°
|
3°
|
3°
|
Additional weather information
Meteorologist's view
Nothing further to add.
Weather
Mainly dry overnight and during daylight hours with just a scattering of showers. The showers could merge into longer outbreaks of rain later in the evening, perhaps heavy at times. Windy with summit gales at times along with a significant wind chill.
Chance of cloud-free hill tops
70% falling 40% in the evening.
Low cloud and visibility
Scattered or broken cloud, base 600 to 900m, occasionally extensive 300 to 600m in rain later in the day. Visibility mostly good or very good, but moderate to very poor in cloud and rain.
Mountain weather information
Weather
Outbreaks of heavy rain overnight and during the early morning, perhaps wintry over the summits. Becoming dry with the cloud lifting and breaking by around midday with sunny spells during the afternoon and clear spells in the evening with a touch of frost possible.
Chance of cloud-free hill tops
30% becoming 80% by afternoon.
Maximum wind speed expected
Northwest 10 to 20mph with a significant wind chill.
Temperature
- At 700m Plus 2 Celsius falling Minus 1 Celsius.
- Valley Plus 5 to 7 Celsius, falling 1 Celsius in the evening.
- Freezing level Around the highest summits falling 400m or less later.
Low cloud and visibility
Occasional or extensive low cloud, base 300 to 600m, lifting and breaking near or above the summits around midday. Visibility often moderate to very poor at first, becoming mostly very good.
Mountain weather information
Wed 14 Jan
Sunrise:
Sunset:
Mainly dry and bright with a frost possible at first. Outbreaks of rain and snow late in the afternoon and evening. Strengthening southerly winds later. Freezing most levels at first, rising to around the highest summit later.
Thu 15 Jan
Sunrise:
Sunset:
Mainly dry with bright or clear spells. A scattering of wintry showers possible. Freezing level typically around the summits, but 400 to 600m late in the period. Winds mainly moderate from the southwest.
Fri 16 Jan
Sunrise:
Sunset:
Mainly dry and bright or clear, perhaps the odd wintry shower. Freezing level below the summits. Light or moderate south or southeast winds.
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.