Mountain weather

Mourne Mountains

Mourne Mountains Mountain weather forecast table

Confidence

High for general evolution but low for details on Sunday.

Sunrise:
Sunset:

This evening forecast

Dry for most of the evening with clear summits giving good visibilities, but areas of fog forming in valleys and slopes below 200-300m. Widespread cloud and rain arrive through the late evening, with visibilities falling moderate or poor. Freshening south to southwest winds 20-30mph, gusting 40mph by midnight. Feeling cold at height.

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 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 Thunderstorms
Lightning is a significant mountain hazard which can result in serious injury or death. Mountain terrain often leaves one highly exposed to lightning strikes. Hail may give unpleasant conditions with torrential rain and localised flash flooding also possible, mainly in Summer months.

Mountain weather forecast

Widespread cloud. Showery rain. Strong winds. Cold.

Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather
(at 700m)
Heavy rain Heavy rain Fog Sleet shower (day) Sleet Heavy rain Overcast Overcast
Chance of precipitation
(at 700m)
90% 70% 30% 50% 70% 70% 50% 30%

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 S
18
S
25
W
33
W
33
W
31
W
27
NW
26
NW
24
300m S
7
S
14
W
18
W
19
W
19
W
17
NW
17
NW
15
Valley S
6
S
12
W
16
W
16
W
16
W
14
NW
15
NW
13
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 26 34 47 47 44 39 37 34
300m 14 24 33 33 32 29 28 26
Valley 13 23 31 31 31 27 26 24

Altitude above mean sea level
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
600m
300m
Valley
Freezing Level
1,100m
1,400m
1,000m
800m
900m
1,000m
1,000m
1,000m

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°
-5°
-7°
-6°
-5°
-5°
-5°
300m
-1°
-2°
-1°
-1°
-1°
-1°
Valley

Additional weather information

Meteorologist's view

Feeling bitterly cold so suitable clothing is advised. Gusts over 40mph will give difficult walking conditions with a risk of being blown off balance. Navigation could be challenging with energy output significantly increased when walking into the wind.

Weather

Band of heavy rain with a chance on thunder crosses in the early hours. For the rest of the day it will be cloudy with showers, these wintry above around 700-800m at times. Feeling bitterly cold with strong winds, chance of gale force gusts over the highest summits.

Chance of cloud-free hill tops

20% or less

Low cloud and visibility

Widespread cloud down to 300-500m throughout the day and visibilities dropping moderate or poor in showers or hill fog. Only a small chance of limited breaks through the afternoon and evening.

Sunrise:
Sunset:

Mountain weather information

Weather

Cloudy in the early morning with the chance of a few showers. Becoming increasingly dry and bright through the day. Still feeling cold in fresh to strong north to northwest winds.

Chance of cloud-free hill tops

Little chance in early hours. Rising to 75% by late morning.

Maximum wind speed expected

North to northwest 30-40mph at times.

Temperature

  • At 700m 0C to plus 2C.
  • Valley Plus 4C rising to plus 8C.
  • Freezing level 1000m falling to 800m.

Low cloud and visibility

Widespread cloud down to 500m or so in the early hours. This lifting and breaking through the morning to leave often clear summits and good visibilities through the day, with only the odd temporary patch of cloud down around 700-800m.

Mountain weather information

Tue 25 Nov

Sunrise:
Sunset:

Mostly dry with bright spells and variable cloud, chance of the odd morning shower. Light to moderate winds. Freezing level around 800m

Wed 26 Nov

Sunrise:
Sunset:

Cloud and rain spread east. Becoming much milder as freezing level rises well above summits. Strong south to southwest winds.

Thu 27 Nov

Sunrise:
Sunset:

Staying cloudy with spells of rain. Freezing level remains above summits. Strong south to southwest winds.

Updated at:

Summit specific forecast

Mountain summit forecast map

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