Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence for conditions to remain unsettled with weather systems moving in from the west. Lower confidence in details for any rainfall events from Friday onwards.
This evening forecast
A dry and cloudy evening. Strong southerly winds and feeling cold.
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.
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.
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.
Mountain weather forecast
Cloudy with rain in the morning, drier and brighter spells in the afternoon. Strong winds.
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
|
|
Chance of precipitation (at 700m) |
10% | >95% | 80% | 60% | 30% | 60% | 60% | 70% |
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
27
|
S
27
|
S
26
|
S
22
|
SW
24
|
SW
23
|
SW
25
|
SW
25
|
| 300m |
S
13
|
S
13
|
S
12
|
S
10
|
SW
14
|
SW
14
|
SW
12
|
SW
14
|
| Valley |
S
11
|
S
10
|
S
9
|
S
8
|
SW
12
|
SW
12
|
SW
10
|
SW
12
|
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 | 38 | 37 | 35 | 30 | 33 | 32 | 35 | 34 |
| 300m | 25 | 23 | 22 | 18 | 23 | 23 | 23 | 24 |
| Valley | 23 | 21 | 20 | 17 | 23 | 22 | 21 | 22 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
6°
|
6°
|
6°
|
6°
|
7°
|
8°
|
7°
|
6°
|
| 300m |
7°
|
7°
|
7°
|
8°
|
9°
|
10°
|
9°
|
8°
|
| Valley |
8°
|
8°
|
8°
|
8°
|
11°
|
12°
|
10°
|
9°
|
| Freezing Level |
2,100m
|
2,300m
|
2,100m
|
2,100m
|
1,800m
|
1,700m
|
1,700m
|
1,600m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
0°
|
0°
|
0°
|
1°
|
3°
|
3°
|
2°
|
1°
|
| 300m |
4°
|
4°
|
4°
|
5°
|
6°
|
7°
|
6°
|
4°
|
| Valley |
5°
|
5°
|
6°
|
6°
|
8°
|
9°
|
8°
|
6°
|
Additional weather information
Meteorologist's view
Cold and wet through the morning with strong winds enhancing the cold feel. Conditions improving for a time in the afternoon but staying windy with showers possible.
Weather
A dry and cloudy start but rain, heavy at times, soon spreading eastwards through the early hours and continuing through the morning. Drier in the afternoon with some bright and sunny spells interspersed with showers. Longer spells of rain possible in the evening. Strong winds on higher routes.
Chance of cloud-free hill tops
10% morning, 60% in the afternoon, lowering to 20% later in evening.
Low cloud and visibility
Widespread low cloud with base 300-400m in the morning, falling to lower slopes at times in rain. From the afternoon some isolated low cloud with base 500-700m, becoming more widespread later in the evening. Visibility poor in cloud and rain, becoming good in the afternoon outside of any cloud.
Mountain weather information
Weather
A cloudy start with a few outbreaks of rain. Heavier and more persistent rain then spreads eastwards through the morning. Turning gradually drier through the afternoon with some bright and clear spells developing. Strong winds may reach gale force.
Chance of cloud-free hill tops
20% in the morning, slowly improving to 80% by the evening.
Maximum wind speed expected
Southwesterly 35-40mph gusting 40-50mph.
Temperature
- At 700m Plus 5-7C.
- Valley Plus 8C, rising to 10C in the afternoon.
- Freezing level Above summits.
Low cloud and visibility
Low cloud with base 500-700m, perhaps lower in rain, in the morning. Through the afternoon low cloud breaking up and becoming more isolated. Visibility good outside of cloud, poor in cloud and rain.
Mountain weather information
Fri 27 Feb
Sunrise:
Sunset:
Mostly dry with bright or sunny spells, but cloudier with heavy showers possible in the afternoon. Strong west to northwesterly winds. Freezing level above summits.
Sat 28 Feb
Sunrise:
Sunset:
Dry start with clear spells, cloudy with rain spreading eastwards later. Strong southwestelry winds may reach gale force on higher summits. Freezing level 700m for a time before rising back above summits.
Sun 1 Mar
Sunrise:
Sunset:
Outbreaks of rain at times, interspersed with drier and brighter intervals. Strong southwesterly winds. Freezing level above summits.
Updated at:
Summit specific forecast
Mountain summit forecast map
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Key
Mountain summits
Other points of interest
Cluster of multiple stations
The Mourne Mountains are a granite mountain range in County Down in the southeast of Northern Ireland, is an area of outstanding natural beauty, and has been proposed as the first National Park in Northern Ireland.