Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence in occasionally unsettled weather. Lower confidence for exact rain and cloud details Tuesday and Wednesday.
This evening forecast
A few showers at first, these wintry above 600-700m. Otherwise dry with increasingly clear skies but feeling cold. Southwest winds 25-35mph.
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.
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.
Mountain weather forecast
Dry, sunny morning. Cloudier afternoon, some showers.
| 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) |
00% | 00% | 00% | <05% | 20% | 30% | 50% | 20% |
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 |
SW
17
|
SW
16
|
SW
15
|
S
13
|
S
15
|
S
15
|
S
11
|
S
11
|
| 300m |
W
6
|
W
6
|
SW
4
|
S
7
|
S
10
|
S
10
|
S
6
|
S
4
|
| Valley |
W
5
|
SW
4
|
S
3
|
S
6
|
S
9
|
S
10
|
S
6
|
SE
4
|
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 | 23 | 21 | 18 | 21 | 22 | 15 | 16 |
| 300m | 15 | 13 | 10 | 12 | 16 | 18 | 11 | 9 |
| Valley | 15 | 12 | 9 | 11 | 16 | 17 | 10 | 8 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
1°
|
0°
|
0°
|
2°
|
3°
|
4°
|
3°
|
2°
|
| 300m |
2°
|
1°
|
1°
|
5°
|
6°
|
7°
|
6°
|
4°
|
| Valley |
3°
|
2°
|
1°
|
6°
|
8°
|
8°
|
7°
|
4°
|
| Freezing Level |
600m
|
600m
|
700m
|
700m
|
800m
|
900m
|
900m
|
900m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-4°
|
-5°
|
-5°
|
-3°
|
-1°
|
-1°
|
-1°
|
-2°
|
| 300m |
-1°
|
-2°
|
-2°
|
2°
|
4°
|
4°
|
4°
|
2°
|
| Valley |
1°
|
0°
|
-1°
|
4°
|
5°
|
6°
|
5°
|
3°
|
Additional weather information
Meteorologist's view
The sun increasingly powerful at this time of year so suitable UV protection may be needed. Feeling chilly at height despite the sun, so suitable clothing is advised.
Weather
Dry with clear skies overnight leading to a patchy frost in places. Dry with sunny spells at first in the morning, but cloud building. Cloudier in the afternoon with a few showers, small chance of hail and lightning. Becoming clear again through the evening as showers fade away. Feeling chilly at height
Chance of cloud-free hill tops
Generally 100%, falling to 80% in afternoon.
Low cloud and visibility
Clear skies and good visibilities to start the day. Cloud building but staying above summits outside of showers. Visibilities dropping rapidly and temporarily poor and cloud down to around summit height as any showers pass through.
Mountain weather information
Weather
Dry in the early morning, but rain and widespread low cloud spreading north, persisting through the day. The rain will be heavy and persistent at times.
Chance of cloud-free hill tops
90% before dawn. Falling to no chance by midday.
Maximum wind speed expected
South to southeast 30-40mph, gusting 50mph at times.
Temperature
- At 700m Plus 1C rising to plus 5C.
- Valley Plus 5C rising to plus 12C by day.
- Freezing level 1000m rising above 2000m by day.
Low cloud and visibility
Clear summits and good visibilities before dawn. Widespread cloud down to even the lowest elevations will spread north through the morning with associated poor visibilities in hill fog and outbreaks of rain.
Mountain weather information
Wed 15 Apr
Sunrise:
Sunset:
Rain, low cloud clearing in morning. Then sunny spells and scattered showers, heavy at times. Strong south to southwest winds. Freezing level above summits.
Thu 16 Apr
Sunrise:
Sunset:
Sunny spells and scattered showers. Freezing level above summits. Fresh to strong south to southwest winds.
Fri 17 Apr
Sunrise:
Sunset:
Cloudy with rain or showers. Strong southerly 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.