Mountain weather

Mourne Mountains

Mourne Mountains Mountain weather forecast table

Confidence

High confidence for generally unsettled and windy conditions over the coming days. Low confidence in timing of rain on Thursday.

Sunrise:
Sunset:

This evening forecast

Dry with and mostly cloudy but cloud above the summits and clear intervals at times. Moderate to fresh southwesterly winds. Feeling chilly on highest routes.

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 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.
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

Cloudy with a little rain at first, dry with sunny spells later.

Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather
(at 700m)
Cloudy Light rain Fog Fog Sunny intervals Sunny intervals Partly cloudy (night) Partly cloudy (night)
Chance of precipitation
(at 700m)
00% 40% 30% 10% 00% 00% 00% 00%

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 SW
17
W
23
W
20
W
17
NW
17
NW
19
NW
19
NW
15
300m W
6
W
10
W
8
W
7
NW
10
NW
12
NW
11
NW
7
Valley W
4
W
7
W
6
W
5
NW
9
NW
11
NW
9
NW
5
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 24 34 29 24 24 28 27 21
300m 13 21 15 14 18 21 19 14
Valley 11 19 15 13 17 21 18 12

Altitude above mean sea level
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
600m
300m
10°
Valley
10°
11°
Freezing Level
1,200m
1,200m
2,000m
2,100m
1,700m
1,200m
900m
800m

Altitude above mean sea level
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
600m
-3°
-2°
-1°
-2°
300m
Valley

Additional weather information

Meteorologist's view

Tricky navigation in low cloud at times and feeling cold on higher routes.

Weather

Cloudy in the morning with outbreaks of light rain at times. Dry in the afternoon with sunny spells developing. Fresh winds, breezy and feeling chilly on highest summits.

Chance of cloud-free hill tops

Mostly 90% but 10% for a time mid-morning to early afternoon.

Low cloud and visibility

Some isolated low cloud with base 700-800m throughout the day but cloud bases lowering and becoming widespread for a time mid-morning to early afternoon, bases 300-500m. Visibility poor in cloud, otherwise very good.

Sunrise:
Sunset:

Mountain weather information

Weather

Mostly cloudy with some brighter spells most likely in the morning. Largely dry also but the odd spot of light rain possible in the afternoon. Southwesterly winds becoming strong later in the day, possibly reaching gale force on highest summits.

Chance of cloud-free hill tops

90%.

Maximum wind speed expected

Southwesterly 25-30mph gusting 40-50mph.

Temperature

  • At 700m 0C rising to plus 5C later.
  • Valley Plus 3C rising to 9C later.
  • Freezing level 700m rising above summits later.

Low cloud and visibility

Some isolated and patchy low cloud with base 600-800m but most cloud remaining above summits. Visibility very good outside of cloud.

Mountain weather information

Tue 24 Mar

Sunrise:
Sunset:

Cloudy with a band of heavy rain spreading southeastwards, followed sunny spells and heavy showers. Strong to gale force southwesterly winds. Freezing level above summits, falling to 300m by end of the day.

Wed 25 Mar

Sunrise:
Sunset:

Mostly cloudy with heavy showers, turning drier in the evening. Strong to gale force northwesterly winds. Freezing level 300 rising to 600m.

Thu 26 Mar

Sunrise:
Sunset:

Largely dry and cloudy with some bright spells, rain arriving later. Fresh southwestery winds. Freezing level around 600m.

Updated at:

Summit specific forecast

Mountain summit forecast map

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