Mountain weather

Mountain weather

Mourne Mountains

Confidence

High for an unsettled theme during the next few days. Lower confidence for the rain details so please keep up to date with the latest forecast.

Mountain hazards

Mountain weather hazards

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

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.
Heavy Persistent Rain
Heavy and persistent rain can lead to drenched clothing and footwear with waterproofs often becoming soaked through, especially if accompanied by strong winds. This can lead to significant loss of body heat and an increased likelihood of hypothermia. Terrain may turn increasingly boggy underfoot while streams can flood and become impassable. There may also be a risk of flooding in valleys or glens. If there is snow cover, a heightened avalanche hazard is possible and avalanche reports should be consulted where available.
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

Early low cloud, then dry and bright. Heavy, thundery rain arriving in evening.

Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
Weather
(at 800m)
Weather symbols Fog Light rain showers Cloudy Light rain Heavy Rain Heavy Rain
Chance of
precipitation
(at 800m)
Chance of precipitation
10%
40%
30%
50%
60%
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 28mph knots
E
28mph
E 21mph knots
E
21mph
NE 17mph knots
NE
17mph
E 14mph knots
E
14mph
NE 14mph knots
NE
14mph
NE 17mph knots
NE
17mph
300m
300m E 13mph knots
E
13mph
E 12mph knots
E
12mph
NE 11mph knots
NE
11mph
E 8mph knots
E
8mph
NE 6mph knots
NE
6mph
NE 8mph knots
NE
8mph
Valley
Valley E 11mph knots
E
11mph
E 10mph knots
E
10mph
NE 9mph knots
NE
9mph
E 7mph knots
E
7mph
N 5mph knots
N
5mph
NE 5mph knots
NE
5mph

Wind gust

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
600m
600m 40mph 30mph 25mph 20mph 21mph 25mph
300m
300m 25mph 22mph 19mph 15mph 13mph 16mph
Valley
Valley 25mph 20mph 17mph 14mph 12mph 14mph

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 11 degrees Celsius 12 degrees Celsius 12 degrees Celsius 10 degrees Celsius
300m
300m 13 degrees Celsius 14 degrees Celsius 15 degrees Celsius 16 degrees Celsius 16 degrees Celsius 14 degrees Celsius
Valley
Valley 15 degrees Celsius 16 degrees Celsius 17 degrees Celsius 18 degrees Celsius 18 degrees Celsius 16 degrees Celsius
Freezing Level Freezing Level
3000m
3100m
3000m
3000m
3000m
3000m

Additional weather information

Meteorologist's view

Good hillwalking conditions during the morning once low cloud has lifted. When making your plans, please beware of the risk of thunderstorms later in the day.

Weather

Low cloud shrouding the hills first thing. A few showers developing in the morning with low cloud lifting and some bright spells developing. Outbreaks of heavy rain, with a risk of lightning, is expected to spread up from the south during the afternoon and evening but some uncertainty in the timings.

Chance of cloud-free hill tops

20% at first, becoming 80% by afternoon, then becoming 20% in evening.

Low cloud and visibility

Extensive cloud above 300 or 400m at first, this slowly lifting during the morning with visibility becoming good from all hills. Visibility becoming poor in the evening with heavy rain and low cloud developing.

Ground conditions

No recent ground conditions report available.

Summit specific forecast