Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence for the general themes and the change to fresher conditions by Tuesday, but some uncertainty cloud detail and extent of sunnier spells on Monday afternoon.
This evening forecast
A mainly dry but rather cloudy evening with the risk of a few patches of hill fog.
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
Dry but rather cloudy morning, sunny spells in the afternoon.
| 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) |
<05% | <05% | <05% | <05% | <05% | <05% | <05% | <05% |
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 |
N
16
|
NW
13
|
N
18
|
N
13
|
NW
10
|
NW
11
|
W
7
|
W
9
|
| 300m |
N
8
|
N
8
|
N
11
|
N
10
|
NW
7
|
W
4
|
E
4
|
W
4
|
| Valley |
N
7
|
N
8
|
N
10
|
N
9
|
NW
7
|
W
4
|
E
4
|
W
3
|
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 | 21 | 17 | 25 | 18 | 15 | 16 | 11 | 12 |
| 300m | 14 | 14 | 19 | 16 | 12 | 9 | 8 | 7 |
| Valley | 13 | 14 | 18 | 16 | 12 | 9 | 7 | 6 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
5°
|
4°
|
3°
|
5°
|
7°
|
9°
|
7°
|
5°
|
| 300m |
8°
|
6°
|
6°
|
8°
|
10°
|
11°
|
9°
|
8°
|
| Valley |
8°
|
7°
|
7°
|
10°
|
12°
|
12°
|
10°
|
8°
|
| Freezing Level |
1,600m
|
1,600m
|
1,500m
|
1,500m
|
1,300m
|
1,300m
|
1,400m
|
1,300m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
1°
|
0°
|
-2°
|
1°
|
4°
|
6°
|
5°
|
3°
|
| 300m |
5°
|
4°
|
2°
|
6°
|
9°
|
10°
|
8°
|
6°
|
| Valley |
7°
|
5°
|
4°
|
7°
|
10°
|
11°
|
9°
|
8°
|
Additional weather information
Meteorologist's view
Best of the sunny spells in the afternoon but still feeling rather chilly on the tops.
Weather
A dry day with areas of cloud in the morning and the odd patch of hill fog at first. Cloud will lift and break up leaving sunny spells for the rest of the day.
Chance of cloud-free hill tops
60% rising to >90% by afternoon.
Low cloud and visibility
A few patches of low cloud above 700m first thing in the morning will break up and lift above summit level by afternoon. Visibility will be good below cloud bases.
Mountain weather information
Weather
A mainly dry day with sunny spells but the odd light shower not to be ruled out. Feeling much colder than of late with moderate winds in exposure bringing a noticable wind chill.
Chance of cloud-free hill tops
90%
Maximum wind speed expected
Gusting 15-20mph on exposed ground.
Temperature
- At 700m Plus 2 rising 5 celsius.
- Valley Plus 6 rising 12 celsius.
- Freezing level Above summits.
Low cloud and visibility
Cloud bases generally above summit level and visibility will be excellent.
Mountain weather information
Wed 6 May
Sunrise:
Sunset:
Remaining cool and rather cloudy with a few mostly light showers. Gentle winds. Freezing level 1000m
Thu 7 May
Sunrise:
Sunset:
Mostly cloudy with showery outbreaks of rain. Gentle to moderate winds. Freezing level above summits.
Fri 8 May
Sunrise:
Sunset:
Variable cloud with the risk of rain or showers. Moderate 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.