Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for quiet weather at first, medium for chance of showers especially from Thursday, and low on Saturday.
This evening forecast
Dry but mostly cloudy. Light winds.
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.
Mountain weather forecast
Dry with broken cloud and some sunny intervals. Small chance of a shower. Moderate to fresh northerly winds on the summits.
| 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) |
<05% | <05% | <05% | <05% | 10% | 10% | 10% | 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 |
NW
11
|
NW
16
|
NW
20
|
N
18
|
N
18
|
N
19
|
N
19
|
N
16
|
| 300m |
NW
6
|
NW
8
|
NW
10
|
N
11
|
N
11
|
N
12
|
N
14
|
N
10
|
| Valley |
NW
6
|
NW
6
|
NW
9
|
N
10
|
N
11
|
N
11
|
N
13
|
N
9
|
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 | 16 | 22 | 29 | 26 | 27 | 27 | 28 | 22 |
| 300m | 12 | 15 | 18 | 19 | 20 | 21 | 23 | 17 |
| Valley | 11 | 13 | 17 | 20 | 20 | 21 | 22 | 16 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
4°
|
4°
|
4°
|
5°
|
5°
|
6°
|
5°
|
3°
|
| 300m |
7°
|
6°
|
6°
|
8°
|
8°
|
9°
|
8°
|
5°
|
| Valley |
8°
|
7°
|
7°
|
9°
|
10°
|
10°
|
9°
|
7°
|
| Freezing Level |
1,200m
|
1,100m
|
1,100m
|
1,000m
|
900m
|
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 |
1°
|
-1°
|
-2°
|
0°
|
0°
|
1°
|
0°
|
-2°
|
| 300m |
5°
|
3°
|
3°
|
5°
|
6°
|
6°
|
4°
|
2°
|
| Valley |
7°
|
5°
|
5°
|
7°
|
8°
|
8°
|
6°
|
4°
|
Additional weather information
Meteorologist's view
Feeling chilly on tops especially in the evening.
Weather
Mainly dry overnight though some cloud settling down onto the higher hills this lifting up during the morning. Then a mainly dry day, some sunny intervals, but often cloudy, and the slight chance of a few scattered light showers, mainly later in the evening.
Chance of cloud-free hill tops
60% at first rising 90% or more by mid morning.
Low cloud and visibility
Areas of cloud above 600m at first with some hill fog then no low cloud and good visibility.
Mountain weather information
Weather
Mainly dry with some clear or sunny intervals, and a slight chance of a shower.
Chance of cloud-free hill tops
More than 90%
Maximum wind speed expected
Southeasterly 15-20mph.
Temperature
- At 700m Plus 1 rising to Plus 5 Celsius
- Valley Plus 2 rising to Plus 11 Celsius
- Freezing level 800m rising above summits
Low cloud and visibility
No low cloud and good visibility
Mountain weather information
Thu 7 May
Sunrise:
Sunset:
A mainly dry start then an increasing chance of showers, some of which could be on the heavy side in the afternoon. Fresh southerly breeze.
Fri 8 May
Sunrise:
Sunset:
Mostly dry morning with bright or sunny spells. Chance of a few afternoon showers which could be heavy. Lighter winds.
Sat 9 May
Sunrise:
Sunset:
Low confidence - chance of some more unsettled weather spreading from south bringing some more general rain.
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.