Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
Generally high confidence over the coming days but moderate for detail of low cloud and showers. Confidence becoming low by late Wednesday/Thursday on development and movement of a low pressure system.
This evening forecast
Late sunshine to end the day, some cloud feeding in by midnight. Moderate northerly 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
Cloudy at first, soon becoming mainly dry and sunny.
| 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% | <05% | 30% | 10% | 10% |
Wind direction and speed (mph)
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
N
13
|
N
11
|
N
11
|
N
10
|
N
9
|
NE
7
|
NE
7
|
NE
7
|
| 300m |
N
11
|
N
10
|
N
7
|
N
8
|
NE
5
|
E
5
|
NE
4
|
NE
6
|
| Valley |
N
11
|
N
9
|
N
7
|
N
8
|
N
5
|
N
5
|
NE
4
|
N
5
|
Wind gust (mph)
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m | 17 | 14 | 15 | 14 | 13 | 12 | 11 | 10 |
| 300m | 17 | 14 | 12 | 12 | 9 | 9 | 8 | 8 |
| Valley | 16 | 13 | 12 | 13 | 10 | 10 | 8 | 9 |
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
10°
|
10°
|
10°
|
10°
|
14°
|
15°
|
14°
|
12°
|
| 300m |
11°
|
11°
|
11°
|
14°
|
17°
|
17°
|
16°
|
13°
|
| Valley |
12°
|
12°
|
12°
|
15°
|
18°
|
18°
|
17°
|
13°
|
| Freezing Level |
2,500m
|
2,500m
|
2,400m
|
2,400m
|
2,400m
|
2,400m
|
2,400m
|
2,400m
|
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
7°
|
8°
|
8°
|
8°
|
12°
|
14°
|
13°
|
11°
|
| 300m |
9°
|
9°
|
10°
|
12°
|
17°
|
17°
|
16°
|
12°
|
| Valley |
10°
|
10°
|
11°
|
13°
|
17°
|
17°
|
17°
|
13°
|
Additional weather information
Meteorologist's view
Nothing to add.
Weather
Low cloud with some mist or fog patches at first. This breaking up during the first part of the morning to leave some lengthy sunny spells. Chance of the odd afternoon shower.
Chance of cloud-free hill tops
20% at first, soon improving 90%
Low cloud and visibility
Broken cloud base 400-600m at first, lifting and breaking during the first part of the morning. Visibility poor in early mist or fog, otherwise good.
Mountain weather information
Weather
Early low cloud, mist and fog again on Monday. Improving during the morning to leave sunshine and the odd shower.
Chance of cloud-free hill tops
30% at first, improving 90% through the morning
Maximum wind speed expected
Variable 5 mph
Temperature
- At 700m Plus 10 to 12 Celsius
- Valley Plus 11 rising to plus 16 Celsius
- Freezing level Above summits
Low cloud and visibility
Scattered or broken cloud base 300-500m at first, soon lifting and breaking. Visibility poor in places at first, improving good during the morning.
Mountain weather information
Tue 21 May
Sunrise:
Sunset:
Bright or sunny spells mixed with showers on Tuesday. Light, variable winds.
Wed 22 May
Sunrise:
Sunset:
A similar day to Tuesday with scattered showers. Increasing northwesterly winds.
Thu 23 May
Sunrise:
Sunset:
Cloudy but mainly dry on Thursday. Moderate to strong northwesterly winds.
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.