Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for a general dry and settled period. Medium for cloud details, with low cloud most likely overnight and early morning.
This evening forecast
Rather cloudy at first this evening with occasional showers, becoming dry with clearing skies. Fresh to strong northwest winds at height.
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.
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.
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 and sunny spells developing. Windy over the summits.
| 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% | <05% | <05% | <05% | <05% | 10% | 10% | <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 |
NW
31
|
NW
31
|
NW
31
|
NW
27
|
NW
26
|
NW
26
|
NW
28
|
NW
29
|
| 300m |
NW
17
|
NW
17
|
NW
19
|
NW
19
|
NW
18
|
NW
18
|
NW
18
|
NW
19
|
| Valley |
NW
14
|
NW
14
|
NW
16
|
NW
17
|
NW
17
|
NW
16
|
NW
17
|
NW
16
|
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 | 44 | 44 | 43 | 38 | 39 | 39 | 42 | 41 |
| 300m | 30 | 31 | 32 | 32 | 31 | 31 | 33 | 32 |
| Valley | 28 | 28 | 30 | 31 | 30 | 30 | 31 | 29 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
8°
|
7°
|
7°
|
10°
|
13°
|
13°
|
11°
|
9°
|
| 300m |
10°
|
10°
|
10°
|
13°
|
16°
|
17°
|
14°
|
11°
|
| Valley |
12°
|
10°
|
11°
|
14°
|
18°
|
18°
|
16°
|
12°
|
| Freezing Level |
1,700m
|
1,600m
|
1,800m
|
1,900m
|
1,900m
|
2,000m
|
1,900m
|
1,800m
|
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°
|
5°
|
8°
|
9°
|
7°
|
4°
|
| 300m |
7°
|
6°
|
7°
|
9°
|
12°
|
13°
|
11°
|
8°
|
| Valley |
9°
|
8°
|
8°
|
11°
|
14°
|
14°
|
12°
|
9°
|
Additional weather information
Meteorologist's view
Note summit winds, feeling chilly at times.
Weather
Patchy low cloud possible overnight and early morning. Any low cloud soon lifting and clearing during the morning to leave a dry and bright day with sunny spells. Dry with sunny or clear spells in the evening.
Chance of cloud-free hill tops
40% soon increasing 90%.
Low cloud and visibility
Occasional or patchy low cloud overnight and early morning, soon lifting and clearing with generally no significant low cloud daylight hours. Visibility mostly very good or excellent, but moderate to very poor in any early low cloud.
Mountain weather information
Weather
Occasional or patchy low forming overnight, soon clearing in the morning. Otherwise dry and bright with good sunny or clear spells.
Chance of cloud-free hill tops
50% overnight, becoming 90% daylight hours.
Maximum wind speed expected
Northwest 10 to 15mph
Temperature
- At 700m Plus 6 to 13 Celsius
- Valley Plus 8 Celsius around dawn, rising to 21 Celsius in the afternoon.
- Freezing level Above the summits.
Low cloud and visibility
Occasional summit cloud overnight, becoming nil significant daylight hours. Visibility mainly very good or excellent, but moderate to very poor in any summit cloud.
Mountain weather information
Wed 9 Jul
Sunrise:
Sunset:
Overnight and early morning low cloud and drizzle expected, this lifting and clearing to bright or sunny spells. Light west or southwest winds at height.
Thu 10 Jul
Sunrise:
Sunset:
Patchy low cloud overnight and early morning. Otherwise dry with bright, sunny or clear spells. Very warm in the afternoon. Light west or southwest winds at height.
Fri 11 Jul
Sunrise:
Sunset:
Patchy low cloud possible overnight. Otherwise dry with sunny or clear spells. Very warm in the afternoon. Light or moderate south or southwest winds at height.
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.