Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for a lot of dry bright weather after early rain clears on Wednesday with a chance of a few showers, but lower confidence that this will last through the weekend as areas of rain start to affect parts of the country.
This evening forecast
A dry evening with cloud breaking to allow some late sunny intervals and some clear spells after dark. Moderate northerly breeze.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Strong Sunlight
Harmful UV levels from sunlight increase with altitude giving a greater risk of sunburn and eye damage, even on some overcast days. On breezy days, the cooling effect of wind on exposed skin may disguise any feeling of sunburn until it is too late. If there is snow cover, glare increases the effect of UV rays especially on the eyes. It is advisable to wear sun block, protective clothing such as a long-sleeved top and hat and have good quality eye protection.
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
Cloudy morning, some showery rain, becoming brighter with sunny intervals and isolated showers. Moderate southeasterly 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% | 70% | 50% | 50% | 20% | 20% | 30% | 30% |
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 |
NE
13
|
NE
12
|
E
15
|
SE
16
|
SE
16
|
SE
14
|
SE
11
|
S
11
|
| 300m |
NE
6
|
NE
6
|
E
8
|
SE
10
|
SE
11
|
SE
10
|
SE
8
|
SE
5
|
| Valley |
N
5
|
E
5
|
E
7
|
SE
9
|
SE
11
|
SE
9
|
SE
7
|
SE
4
|
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 | 19 | 17 | 21 | 23 | 23 | 19 | 16 | 15 |
| 300m | 12 | 11 | 15 | 17 | 18 | 16 | 12 | 9 |
| Valley | 11 | 10 | 14 | 16 | 17 | 15 | 12 | 9 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
4°
|
3°
|
3°
|
3°
|
4°
|
4°
|
4°
|
4°
|
| 300m |
5°
|
5°
|
6°
|
6°
|
7°
|
8°
|
7°
|
6°
|
| Valley |
6°
|
6°
|
7°
|
8°
|
9°
|
9°
|
8°
|
7°
|
| Freezing Level |
1,000m
|
1,100m
|
1,000m
|
900m
|
900m
|
900m
|
1,100m
|
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 |
-1°
|
-1°
|
-2°
|
-2°
|
-1°
|
0°
|
0°
|
0°
|
| 300m |
3°
|
3°
|
3°
|
3°
|
4°
|
5°
|
5°
|
4°
|
| Valley |
4°
|
5°
|
4°
|
5°
|
6°
|
7°
|
6°
|
6°
|
Additional weather information
Meteorologist's view
Nothing extra
Weather
Starting dry but cloud and showery rain will arrive in the early hours. A rather cloudy morning with some showery rain, sleety on summits, then becoming drier with some bright or sunny intervals in the afternoon, but still the chance of the odd light shower.
Chance of cloud-free hill tops
60% at first rising 90% by afternoon
Low cloud and visibility
Cloud may dip to 750m in morning in showery rain with hill fog, and moderate visibility beneath due to the rain. Then good visibility thereafter.
Mountain weather information
Weather
Mainly dry and bright with some sunny intervals, and a slight chance of light showers.
Chance of cloud-free hill tops
80% rising over 90%.
Maximum wind speed expected
South to southwesterly 20 gusts 30mph
Temperature
- At 700m Plus 3 rising to Plus 8 Celsius.
- Valley Plus 6 rising to Plus 14 Celsius.
- Freezing level Above summits.
Low cloud and visibility
Perhaps a few summit patches of cloud at first otherwise no low cloud and good visibility.
Mountain weather information
Fri 8 May
Sunrise:
Sunset:
Bright with sunny intervals and the chance of a few heavy showers in the afternoon. Light winds.
Sat 9 May
Sunrise:
Sunset:
Low confidence. Looking cloudy with outbreaks of rain and hill fog, but a chance that it could be drier and brighter.
Sun 10 May
Sunrise:
Sunset:
Confidence remaining low - most likely outcome is dry bright and quite warm, but areas of rain in other parts of the country mean that the forecast should continue to be monitored.
Updated at:
Summit specific forecast
Mountain summit forecast map
Loading map…
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.