Mountain weather

Mourne Mountains

Mourne Mountains Mountain weather forecast table

Confidence

High confidence for unsettled weather. Low confidence for details on Monday especially.

Sunrise:
Sunset:
Mountain hazards

Mountain weather hazards

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

hazard Severe Chill Effect
Wind significantly lowers the ‘feels-like’ temperature relative to the actual temperature, with even moderate winds significantly adding to the chilling effect. Strong winds can result in a severe and debilitating wind chill many degrees below the actual temperature. This effect will be enhanced in rain or wet snow. Without protection, prolonged exposure could result in frost nip or frostbite on exposed parts of the body and/or hypothermia.

hazard 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.
hazard 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

Cloud, rain in morning. Dry, bright afternoon. Cold. Windy.

Time 06:00 09:00 12:00 15:00 18:00 21:00
Weather
(at 700m)
Light rain Light rain Cloudy Cloudy Partly cloudy (night) Partly cloudy (night)
Chance of precipitation
(at 700m)
50% 30% 20% 10% <05% <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
14
N
20
N
30
N
32
N
35
NW
32
300m N
7
N
12
N
16
N
17
N
17
NW
16
Valley NW
7
N
11
N
13
N
14
N
14
NW
13
Wind gust (mph)
Altitude above mean sea level
Time 06:00 09:00 12:00 15:00 18:00 21:00
600m 19 27 41 44 49 44
300m 12 20 28 30 32 30
Valley 13 20 27 29 30 28

Altitude above mean sea level
Time 06:00 09:00 12:00 15:00 18:00 21:00
600m
-1°
300m
Valley
Freezing Level
1,000m
900m
800m
600m
400m
400m

Altitude above mean sea level
Time 06:00 09:00 12:00 15:00 18:00 21:00
600m
-3°
-5°
-6°
-8°
-9°
-9°
300m
-1°
-2°
-4°
-5°
Valley
-2°
-3°

Additional weather information

Meteorologist's view

Notably colder than recent days with a severe wind chill at height, especially later in the day as freezing level falls. Windy conditions will make for fairly arduous walking on exposed terrain with buffeting of clothing. Balance may be affected at times. Limited visibility at first, improving through the day.

Weather

Widespread cloud and light rain in the early morning. This clearing southeast through mid- to late morning allowing a dry day with increasing clear spells towards the evening. Feeling colder than recent days. Chance of gales over the highest summits.

Chance of cloud-free hill tops

25% or less at first. Rising to 75% or higher from afternoon.

Low cloud and visibility

Widespread cloud down to 500-700m and visibilities moderate or poor in the morning. Cloud and rain clearing to allow largely clear summits and good visibilities through the afternoon and evening.

Sunrise:
Sunset:

Mountain weather information

Weather

Chance of the odd shower before dawn. Otherwise dry with bright spells much of the day, before rain, cloud and strong winds spread east through the late afternoon and evening.

Chance of cloud-free hill tops

60% before dawn, 80% or higher by day, falling little chance in evening.

Maximum wind speed expected

West-northwest 25-30mph at first, easing through the day. Strengthening southerly 50-60mph in evening.

Temperature

  • At 700m Minus 2C rising to 0C.
  • Valley 0C rising to plus 7C.
  • Freezing level 400m rising above summits in evening.

Low cloud and visibility

The odd patch of cloud around summit height possible and visibilities temporarily dropping moderate or poor should any showers pass through before dawn. Clear summits and good visibilities by day. Widespread cloud down to 300-500m and visibilities dropping poor as rain spreads east later.

Mountain weather information

Mon 1 Dec

Sunrise:
Sunset:

Low confidence. Showers and occasionally longer spells of rain, heavy at times. Likely strong winds. Freezing level above summits, falling to 900m later.

Tue 2 Dec

Sunrise:
Sunset:

Bright spells and showers, heavy at times. Strong southwest winds. Freezing level 800-1000m.

Wed 3 Dec

Sunrise:
Sunset:

Showers, perhaps forming longer spells of rain. Freezing level around 1200m. Fresh southwest winds

Updated at:

Summit specific forecast

Mountain summit forecast map

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