Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
Generally high confidence for unsettled conditions and milder temperatures for a time Wednesday to Friday. Lower confidence in the timing and nature of the rain on Sunday.
This evening forecast
A dry evening with plenty of clear spells to start before turning increasing cloudy. Moderate southwesterly wind. Cold with a marked wind chill.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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.
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.
Mountain weather forecast
Cloud and rain spreading eastwards with widespread hill fog. Cold with significant wind chill on strong winds.
| 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) |
10% | 10% | 40% | 80% | 80% | 30% | 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 |
SW
17
|
S
24
|
S
25
|
S
26
|
S
22
|
SW
24
|
W
24
|
SW
22
|
| 300m |
SW
6
|
SW
8
|
S
11
|
S
13
|
SW
11
|
SW
11
|
W
11
|
SW
10
|
| Valley |
SW
5
|
S
7
|
S
9
|
S
10
|
S
8
|
SW
9
|
W
9
|
SW
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 | 24 | 33 | 35 | 35 | 30 | 34 | 33 | 31 |
| 300m | 14 | 18 | 21 | 22 | 18 | 19 | 20 | 19 |
| Valley | 13 | 17 | 19 | 21 | 16 | 19 | 19 | 19 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
2°
|
2°
|
2°
|
4°
|
6°
|
7°
|
7°
|
7°
|
| 300m |
2°
|
3°
|
4°
|
6°
|
7°
|
8°
|
9°
|
9°
|
| Valley |
2°
|
4°
|
5°
|
7°
|
8°
|
9°
|
10°
|
10°
|
| Freezing Level |
800m
|
1,100m
|
1,900m
|
2,200m
|
2,200m
|
2,400m
|
2,400m
|
2,400m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-4°
|
-5°
|
-4°
|
-2°
|
0°
|
2°
|
3°
|
3°
|
| 300m |
0°
|
0°
|
1°
|
2°
|
4°
|
6°
|
6°
|
6°
|
| Valley |
0°
|
2°
|
3°
|
4°
|
6°
|
7°
|
8°
|
8°
|
Additional weather information
Meteorologist's view
A rather cloudy day with frequent hill fog making for tricky navigation. Feeling cold with rain so warm and waterproof clothing recommended.
Weather
Mostly dry and cloudy in the early hours but rain soon spreading eastwards over the Mournes. Turning drier again from late afternoon but remaining overcast. Fresh to strong southwesterly winds with a wind chill, this most significant through the first half of the day.
Chance of cloud-free hill tops
60% chance for a time early morning but soon becoming nil through the morning.
Low cloud and visibility
Cloud bases down to around 1000m through the early hours but bases soon falling through the morning with the arrival of rain with bases 400-600m, but may fall as low as 200m at times. Visibility good outside of cloud but moderate in rain and very poor in low cloud and hill fog.
Mountain weather information
Weather
Cloudy through the morning and early afternoon with outbreaks of light rain and drizzle. Cloud and rain clearing to the east during the afternoon leaving dry and clear conditions with only a little patchy cloud lingering. Strong southwesterly winds with gales possible in the highest hills.
Chance of cloud-free hill tops
10%, rising to 90% through the afternoon.
Maximum wind speed expected
Southwest 35-40mph gusting 45-50mph.
Temperature
- At 700m 5-7 Celsius.
- Valley 10-12 Celsius, falling to 7 Celsius at night.
- Freezing level Above summits.
Low cloud and visibility
Cloud bases of 400-600m through much of the morning and early afternoon, with bases down to 200m at times in the morning. Cloud lifting through the afternoon with only very isolated cloud with base 700m lingering.
Mountain weather information
Fri 28 Nov
Sunrise:
Sunset:
Sunny spells with a few showers possible. Fresh to strong southwesterly winds. Freezing level above summits.
Sat 29 Nov
Sunrise:
Sunset:
Mostly dry with sunny spells. Fresh southwesterly winds becoming northwesterly. Freezing level 700-800m.
Sun 30 Nov
Sunrise:
Sunset:
Dry start with sunny spells, but cloud and rain arriving later. Fresh westerly winds. Freezing level 700-800m.
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.