Mountain weather

Mourne Mountains

Mourne Mountains Mountain weather forecast table

Confidence

High confidence for settled conditions, slightly lower confidence in cloud extent.

Sunrise:
Sunset:
Mountain hazards

Mountain weather hazards

Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.

hazard 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.

Mountain weather forecast

Dry with prolonged sunshine.

06:00 09:00 12:00 15:00 18:00 21:00
Weather
(at 700m)
Sunny intervals Sunny day Sunny day Sunny day Sunny day Sunny day
Chance of precipitation
(at 700m)
00% 00% 00% 00% 00% 00%

Wind direction and speed (mph)
Altitude above mean sea level
06:00 09:00 12:00 15:00 18:00 21:00
600m E
11
E
9
E
7
E
8
E
7
E
7
300m E
8
E
8
E
8
E
8
E
6
NE
5
Valley E
7
E
7
E
7
E
7
E
5
E
4
Wind gust (mph)
Altitude above mean sea level
06:00 09:00 12:00 15:00 18:00 21:00
600m 15 12 12 13 11 10
300m 13 13 12 13 10 7
Valley 12 11 12 12 9 7

Altitude above mean sea level
06:00 09:00 12:00 15:00 18:00 21:00
600m
10°
12°
12°
11°
300m
10°
11°
13°
14°
14°
11°
Valley
11°
12°
14°
16°
15°
11°
Freezing Level
2,500m
2,300m
2,300m
2,300m
2,200m
2,200m

Altitude above mean sea level
06:00 09:00 12:00 15:00 18:00 21:00
600m
10°
10°
300m
11°
13°
13°
10°
Valley
11°
13°
15°
14°
10°

Additional weather information

Meteorologist's view

Nothing to add.

Weather

There will be some patchy low cloud at first but this soon clearing, then prolonged sunshine throughout the day.

Chance of cloud-free hill tops

90%, 60% at first.

Low cloud and visibility

Good or very good visibility. Scattered low cloud, base 600-800m at first.

Sunrise:
Sunset:

Mountain weather information

Weather

Mainly sunny throughout the day, perhaps a little scattered cloud during the afternoon.

Chance of cloud-free hill tops

90%

Maximum wind speed expected

Light and variable.

Temperature

  • At 700m Plus 9 rising to plus 14 Celsius.
  • Valley Plus 10 rising to plus 18 Celsius.
  • Freezing level Above summits.

Low cloud and visibility

Good or very good visibility.

Mountain weather information

Sun 4 Jun

Sunrise:
Sunset:

Chance of some early mist or fog patches in valleys. Prolonged sunshine for much of the day. Generally light winds, warm in the sunshine.

Mon 5 Jun

Sunrise:
Sunset:

Patchy cloud and sunny spells on Monday. Moderate northeasterly winds. Warm in the sunshine.

Tue 6 Jun

Sunrise:
Sunset:

Another day of good sunny spells.

Updated at:

Summit specific forecast

Mountain summit forecast map

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The Mourne Mountains include the highest mountains in Northern Ireland; the highest of these is Slieve Donard standing at 850 metres at the northeastern edge of the Mournes, overlooking Newcastle and Dundrum Bay. At the summit of Slieve Donard there is a cairn and a small stone tower, which is part of the Mourne Wall, which passes over the mountain’s southern and western shoulders.

The Mourne Wall is a 35 kilometre dry stone wall that crosses fifteen summits, constructed between 1904 and 1922 by the Belfast Water Commissioners to define and enclose the catchment area for the newly constructed Silent Valley Reservoir.v