Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
Generally high confidence in overall setup and for a mostly unsettled week. Low confidence over the weekend with respect to timing and extent of rain and strong winds.
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.
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
Dry. Overcast in the morning with hill fog, sunny spells developing later. Light or moderate winds.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
10% | 00% | 00% | 00% | 00% | 00% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
NW
7
|
W
10
|
SW
12
|
SW
16
|
SW
15
|
SW
17
|
| 300m |
NE
3
|
W
5
|
SW
8
|
SW
11
|
SW
7
|
SW
4
|
| Valley |
N
2
|
NW
4
|
SW
7
|
SW
9
|
S
5
|
SW
3
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 8 | 13 | 15 | 21 | 20 | 24 |
| 300m | 5 | 8 | 13 | 17 | 11 | 11 |
| Valley | 4 | 8 | 12 | 16 | 10 | 11 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
8°
|
7°
|
8°
|
9°
|
7°
|
7°
|
| 300m |
9°
|
10°
|
11°
|
12°
|
9°
|
7°
|
| Valley |
10°
|
11°
|
12°
|
13°
|
11°
|
8°
|
| Freezing Level |
2,200m
|
2,200m
|
2,100m
|
1,700m
|
1,300m
|
2,000m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
7°
|
4°
|
6°
|
5°
|
4°
|
3°
|
| 300m |
9°
|
9°
|
10°
|
9°
|
8°
|
6°
|
| Valley |
10°
|
10°
|
11°
|
11°
|
10°
|
7°
|
Additional weather information
Meteorologist's view
Poor visibility in the morning with fog to all levels making for tricky navigation. Cloud lifting to give a more pleasant afternoon with some bright spells.
Weather
A dry, but cloudy and overcast morning. Mostly cloudy in the afternoon but cloud lifting and some bright or sunny spells breaking through. Mostly light southwesterly winds.
Chance of cloud-free hill tops
Little chance in the morning, improving to 80% in the afternoon.
Low cloud and visibility
Low cloud in the morning with base 200m, but possible down to valley level. Cloud lifting in the afternoon with occasional low cloud, base 600-800m lingering. Visibility poor in fog during the morning, good outside of cloud later.
Mountain weather information
Weather
Cloudy with a band of rain spreading eastwards through the morning. The rain clears to blustery showers, which may be wintry and heavy at times. Fresh to strong southwesterly winds turning westerly.
Chance of cloud-free hill tops
10% in the morning, becoming 90% by the afternoon.
Maximum wind speed expected
Southwest becoming west 20-25mph gusting 30-40mph.
Temperature
- At 700m Plus 6C falling 0C in the evening.
- Valley Plus 8 or 9C, falling to plus 4 C in the evening.
- Freezing level Above summits falling to 700m later.
Low cloud and visibility
Low cloud with base 400-600m in the morning, falling to lower slopes at times in rain. Cloud lifting after rain clears with only very isolated cloud base 700-900m in heavier or wintry showers. Visibility poor in cloud and rain in the morning, good in the afternoon away from showers.
Mountain weather information
Fri 10 Apr
Sunrise:
Sunset:
A dry start with some clear spells, rain and thicker cloud spreading eastwards later. Light or moderate southwesterly winds becoming southerly and strengthening strong to gale force later. Freezing level 700m rising above summits in the afternoon.
Sat 11 Apr
Sunrise:
Sunset:
Scattered blustery, and perhaps wintry, showers with some bright spells. Strong southwesterly winds, perhaps reaching gale force at times. Freezing level above summits, falling to 600m through the day.
Sun 12 Apr
Sunrise:
Sunset:
Bright or sunny spells and showers. Strong to gale force 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.