Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for a mainly dry weekend then more changeable, but low for all details
This evening forecast
Dry with clear skies. Strengthening south to southwest winds on the tops. Freezing level 700m.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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.
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. Some sunny spells, but chance of some capping cloud above 700m at times, more likely in the morning and evening. Strong summit 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) |
00% | <05% | <05% | <05% | <05% | <05% | <05% | <05% |
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
18
|
S
20
|
S
21
|
S
20
|
S
19
|
S
19
|
S
20
|
S
20
|
| 300m |
S
7
|
SW
7
|
SW
6
|
S
8
|
S
13
|
S
13
|
S
10
|
S
8
|
| Valley |
S
5
|
SW
5
|
SW
4
|
S
6
|
S
12
|
S
12
|
S
8
|
S
6
|
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 | 28 | 30 | 28 | 27 | 26 | 27 | 27 |
| 300m | 14 | 14 | 14 | 16 | 20 | 21 | 18 | 16 |
| Valley | 13 | 13 | 13 | 14 | 20 | 20 | 16 | 15 |
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°
|
1°
|
2°
|
4°
|
4°
|
2°
|
2°
|
| 300m |
2°
|
2°
|
2°
|
4°
|
7°
|
7°
|
5°
|
4°
|
| Valley |
3°
|
2°
|
2°
|
5°
|
8°
|
8°
|
6°
|
5°
|
| Freezing Level |
700m
|
900m
|
1,000m
|
1,000m
|
1,000m
|
1,100m
|
1,100m
|
1,000m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-5°
|
-5°
|
-6°
|
-4°
|
-2°
|
-2°
|
-3°
|
-4°
|
| 300m |
0°
|
-1°
|
-1°
|
2°
|
3°
|
3°
|
1°
|
1°
|
| Valley |
0°
|
0°
|
0°
|
3°
|
5°
|
5°
|
4°
|
3°
|
Additional weather information
Meteorologist's view
In general a fine day, though notable summit wind chill and uncertainty over summit cloud.
Weather
Staying dry throughout, with clear or sunny periods, but perhaps some summit cloud early and late.
Chance of cloud-free hill tops
70% early and late, otherwise 90%
Low cloud and visibility
Chance of some capping cloud above 700m at times, more likely in the morning and evening. Away from this, visibility will be good.
Mountain weather information
Weather
Another dry day. More in the way of high cloud but still bright with some hazy sunny intervals. Lower cloud likely to arrive towards evening with the chance of some patchy light rain before midnight.
Chance of cloud-free hill tops
80% or more falling 20% or less during the evening.
Maximum wind speed expected
Southerly 20 gusts 30mph.
Temperature
- At 700m Plus 1 rising to Plus 4 Celsius
- Valley Plus 2 rising to Plus 12 Celsius
- Freezing level 800m rising above summits during the morning
Low cloud and visibility
Only patchy low cloud with most cloud above summits bringing good visibility, but more widespread cloud at 450-600m likely arriving during the evening and falling to 300m over southern exposures later in the evening. By day visibility away from cloud will be good but could fall poor in drizzle during the evening.
Mountain weather information
Mon 9 Mar
Sunrise:
Sunset:
Rather cloudy with some hill fog and a little rain at times, though some good dry spells.
Tue 10 Mar
Sunrise:
Sunset:
Cloudy with outbreaks of rain becoming heavier and more persistent with hill fog and south to southwesterly gales.
Wed 11 Mar
Sunrise:
Sunset:
Likely to be a showery day with southwesterly gales.
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.