Mountain weather

Mourne Mountains

Yellow warning

Yellow weather warning in force for Mourne Mountains

Mourne Mountains Mountain weather forecast table

Confidence

High confidence for the general evolution. Lower confidence for timing of fronts on Tuesday and Wednesday.

Sunrise:
Sunset:

This evening forecast

Cloud, heavy and showery outbreaks of rain and severe gales or storm force winds at first in the evening as Storm Dave pushes northeast. Becoming mostly dry with some clear spells and a few wintry showers, but still severe gales or storm force gusts over the summits.

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 Blizzards
Blizzards and whiteouts present challenging and serious conditions due to a combination of falling or blowing snow, strong winds and cold temperatures. They can be highly disorientating, often resulting in near-zero visibility with limited or no visual references and no distinction between ground and sky. Cliff edges and cornices may not be apparent, even close up. These conditions require very good navigational skills.
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 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.
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

Scattered, heavy wintry showers. Cold. Gusty.

Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather
(at 700m)
Partly cloudy (night) Sleet Heavy snow shower (day) Heavy snow shower (day) Light snow shower (day) Sunny intervals Clear night Clear night
Chance of precipitation
(at 700m)
40% 80% 50% 50% 40% 30% 20% 10%

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 W
35
W
27
W
29
W
28
W
31
W
27
W
19
W
17
300m W
17
W
14
W
15
W
17
W
19
W
17
W
10
W
7
Valley W
13
W
11
W
13
W
14
W
17
W
14
W
8
W
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 48 40 41 39 45 38 26 25
300m 32 27 28 29 33 28 18 15
Valley 30 26 26 28 32 27 16 14

Altitude above mean sea level
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
600m
-1°
-1°
300m
Valley
Freezing Level
600m
500m
400m
400m
400m
400m
500m
400m

Altitude above mean sea level
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
600m
-8°
-8°
-9°
-9°
-6°
-5°
-4°
-5°
300m
-3°
-3°
-4°
-3°
-1°
Valley
-1°
-1°
-3°
-1°

Additional weather information

Meteorologist's view

Gusts over 40mph at times 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. Feeling bitterly cold so suitable clothing is advised. Note that some areas and services may be still be dealing with the effects of Storm Dave.

Weather

Very strong winds with widespread gales gradually easing through the early hours. A band of showery sleet or snow crosses east before dawn. Otherwise bright spells and scattered snow showers through the day. These heavy at times with a small chance of hail and lightning. Becoming largely dry through the evening. Strong gusty winds at times, reaching gale-force over the highest summits.

Chance of cloud-free hill tops

50% in morning, 75% by evening.

Low cloud and visibility

Cloud down to summit height and visibilities falling poor as snow showers pass through. Increasing breaks between showers through the afternoon and evening in which summits will become mostly clear with good visibilities

Sunrise:
Sunset:

Mountain weather information

Weather

Dry and bright though rather hazy with high cloud through the day. Areas of cloud around summit height may bring the odd spot of rain for a time in the afternoon. Light winds in morning, becoming strong with gales from afternoon.

Chance of cloud-free hill tops

80%

Maximum wind speed expected

Southerly 55-65mph in the afternoon and evening.

Temperature

  • At 700m Minus 2C rising to plus 4C.
  • Valley Plus 2C rising to plus 11C.
  • Freezing level 400m rising to 1000m by midday, well above summits in the afternoon.

Low cloud and visibility

Summits clear and good visibilities the majority of the day. Some patches of cloud may affect higher summits for a time in the afternoon.

Mountain weather information

Tue 7 Apr

Sunrise:
Sunset:

Dry first thing. Rain spreading east through the day. Strong southerly winds. Freezing level well above summits.

Wed 8 Apr

Sunrise:
Sunset:

Spells of rain or showers. Freezing level falling to around 1000m later. Strong southwest winds.

Thu 9 Apr

Sunrise:
Sunset:

Bright spells and scattered showers. Fresh to strong westerly winds.

Updated at:

Summit specific forecast

Mountain summit forecast map

Loading map…