Mountain weather

Mountain weather

Mourne Mountains

Confidence

High for Monday. Low for detail on heavy rain or showers on Tuesday and Wednesday. High for showery and cooler conditions later in the week.

Mountain hazards

Mountain weather hazards

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

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.

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.
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

Mainly dry, bright morning then showers developing. Chance of some heavy bursts later.

Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
Weather
(at 800m)
Weather symbols Cloudy Sunny intervals Sunny intervals Cloudy Cloudy Heavy rain showers (night)
Chance of
precipitation
(at 800m)
Chance of precipitation
40%
20%
20%
30%
50%
80%

Wind direction and speed

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
600m
600m E 30mph knots
E
30mph
E 18mph knots
E
18mph
SE 16mph knots
SE
16mph
SE 16mph knots
SE
16mph
SE 18mph knots
SE
18mph
SE 18mph knots
SE
18mph
300m
300m E 14mph knots
E
14mph
E 11mph knots
E
11mph
SE 11mph knots
SE
11mph
SE 10mph knots
SE
10mph
SE 6mph knots
SE
6mph
SE 7mph knots
SE
7mph
Valley
Valley E 10mph knots
E
10mph
E 10mph knots
E
10mph
SE 10mph knots
SE
10mph
SE 9mph knots
SE
9mph
SE 5mph knots
SE
5mph
SE 6mph knots
SE
6mph

Wind gust

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
600m
600m 45mph 23mph 21mph 20mph 24mph 25mph
300m
300m 29mph 17mph 16mph 15mph 13mph 14mph
Valley
Valley 26mph 18mph 17mph 15mph 11mph 13mph

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
600m
600m 8 degrees Celsius 10 degrees Celsius 12 degrees Celsius 12 degrees Celsius 11 degrees Celsius 9 degrees Celsius
300m
300m 12 degrees Celsius 14 degrees Celsius 16 degrees Celsius 16 degrees Celsius 16 degrees Celsius 13 degrees Celsius
Valley
Valley 14 degrees Celsius 15 degrees Celsius 18 degrees Celsius 18 degrees Celsius 17 degrees Celsius 15 degrees Celsius
Freezing Level Freezing Level
2400m
2600m
3100m
3300m
3000m
3300m

Additional weather information

Meteorologist's view

A warm and humid day with a risk of sunburn, even through the cloud. An increasing risk of heavy showers towards evening.

Weather

Occasional light rain in early morning. A mainly dry morning with some bright spells developing and becoming warm and humid. A few showers developing in the afternoon, becoming heavy at times in the evening with a chance of thunder.

Chance of cloud-free hill tops

95%, becoming 70% in the evening.

Low cloud and visibility

Mainly good visibility with cloud remaining above summits. Occasional reductions in showers, down to a few km in any heavy showers later with some patchy cloud affecting the summits.

Ground conditions

No recent ground conditions report available.

Summit specific forecast