Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for most aspects but medium for cloud until Thursday
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
Some bright or sunny intervals in morning then cloudy, but mainly dry.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
<05% | <05% | 10% | 20% | 10% | <05% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
NW
18
|
NW
14
|
NW
12
|
W
15
|
NW
19
|
NW
17
|
| 300m |
NW
7
|
NW
8
|
W
8
|
W
9
|
NW
11
|
NW
7
|
| Valley |
NW
5
|
NW
6
|
W
6
|
NW
8
|
NW
10
|
NW
7
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 24 | 19 | 16 | 20 | 26 | 26 |
| 300m | 13 | 13 | 12 | 15 | 19 | 15 |
| Valley | 13 | 13 | 12 | 15 | 19 | 17 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
8°
|
10°
|
12°
|
14°
|
14°
|
12°
|
| 300m |
10°
|
13°
|
15°
|
17°
|
17°
|
14°
|
| Valley |
12°
|
15°
|
16°
|
18°
|
18°
|
15°
|
| Freezing Level |
1,800m
|
3,100m
|
3,300m
|
2,800m
|
3,000m
|
2,900m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
4°
|
7°
|
9°
|
12°
|
11°
|
9°
|
| 300m |
9°
|
12°
|
14°
|
16°
|
15°
|
13°
|
| Valley |
11°
|
14°
|
16°
|
18°
|
17°
|
14°
|
Additional weather information
Meteorologist's view
Cloud details uncertain on Tuesday
Weather
Broken cloud and some clear or sunny intervals in the morning. Then generally cloudy in the afternoon, mainly dry but small chance of a light shower. Cloud breaking again during the evening.
Chance of cloud-free hill tops
60% rising 80%
Low cloud and visibility
Occasional cloud clinging to tops overnight and into morning. Cloud in afternoon perhaps around 750m.
Mountain weather information
Weather
Dull start with hill fog and drizzle then brightening up with some sunny intervals by afternoon.
Chance of cloud-free hill tops
10% rising 90% by late morning
Maximum wind speed expected
West 15 gusts 25mph.
Temperature
- At 700m Plus 9 rising to Plus 16 Celsius
- Valley Plus 13 rising to Plus 22 Celsius
- Freezing level Above summits
Low cloud and visibility
Cloud at 350-500m at first with lower patches, lifting off summits by late morning and breaking up in the afternoon, with mainly good visibility away from cloud and any early drizzle.
Mountain weather information
Thu 10 Jul
Sunrise:
Sunset:
A cloudy start with some hill fog then cloud lifting off hills, with a few sunny intervals. Moderate west to southwesterly breeze.
Fri 11 Jul
Sunrise:
Sunset:
Dry with unbroken sunshine and a mostly light breeze. Very warm, hot at low levels.
Sat 12 Jul
Sunrise:
Sunset:
Dry with unbroken sunshine and a mostly light breeze. Very warm, hot at low levels.
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.