Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for a dry day on Sunday then more unsettled, lower for daily cloud details and timings of rain.
This evening forecast
A dry evening, with variable cloud, some clear spells in the wider area but likely to be some cloud over the hills bringing some hill fog. Strong southerly summit winds.
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
Another dry day with some sunshine but low cloud and hill fog early and late. Strong southerly winds on the tops.
| 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% | <05% | <05% | <05% | 00% |
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
17
|
S
18
|
S
18
|
S
17
|
S
16
|
S
16
|
S
16
|
| 300m |
S
7
|
S
7
|
S
8
|
S
10
|
S
12
|
S
11
|
S
8
|
S
8
|
| Valley |
S
5
|
S
5
|
S
6
|
S
9
|
S
11
|
S
10
|
S
7
|
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 | 25 | 24 | 25 | 24 | 24 | 21 | 23 | 22 |
| 300m | 14 | 14 | 15 | 17 | 19 | 17 | 15 | 14 |
| Valley | 13 | 13 | 14 | 16 | 19 | 17 | 13 | 13 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
2°
|
2°
|
2°
|
2°
|
4°
|
4°
|
3°
|
4°
|
| 300m |
4°
|
4°
|
4°
|
5°
|
7°
|
7°
|
6°
|
5°
|
| Valley |
5°
|
5°
|
5°
|
6°
|
8°
|
8°
|
7°
|
6°
|
| Freezing Level |
1,100m
|
1,100m
|
1,000m
|
1,000m
|
1,000m
|
1,100m
|
1,200m
|
1,200m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-3°
|
-4°
|
-4°
|
-3°
|
-1°
|
-1°
|
-2°
|
-1°
|
| 300m |
2°
|
1°
|
1°
|
2°
|
3°
|
4°
|
3°
|
3°
|
| Valley |
4°
|
3°
|
2°
|
3°
|
5°
|
6°
|
5°
|
4°
|
Additional weather information
Meteorologist's view
Summit winds will be 15-20mph stronger than the 600m winds in the table.
Weather
A dry day. Cloudy at first the cloud lifting and breaking during the morning to allow some long sunny spells in afternoon, however cloud expected to reform over the hills later in the day.
Chance of cloud-free hill tops
20% rising to 80% late morning to mid afternoon then falling 20%
Low cloud and visibility
Cloud at 600-750m at first lifting and breaking but reforming over the hills later in the afternoon or early evening. Away from the hill fog this causes, general visibility will be good.
Mountain weather information
Weather
Overcast with hill fog and occasional rain. Perhaps a brighter spell around the middle of the day.
Chance of cloud-free hill tops
10% rising 40% for a time around the middle of the day
Maximum wind speed expected
South to southwesterly 20 gusts 30mph.
Temperature
- At 700m Plus 3 rising to Plus 5 Celsius.
- Valley Plus 7 rising to Plus 11 Celsius.
- Freezing level Above the summits.
Low cloud and visibility
Extensive cloud to 300-600m overnight and into the morning, lifting somewhat and perhaps breaking for a time around the middle of the day especially in the north but with low confidence. If it does, then it is likely to return again later in the afternoon and evening. Visibility also quite poor at times below the cloud in drizzly rain.
Mountain weather information
Tue 10 Mar
Sunrise:
Sunset:
A cloudy day with some hill fog. Dry in the morning and early afternoon then outbreaks of light rain from mid-afternoon turning heavier in the evening. Strengthening south to southwest winds with gales, becoming severe in the evening on tops.
Wed 11 Mar
Sunrise:
Sunset:
Rain clearing in early hours then a brighter day with sunny spells and a few brief showers. Strong to gale west or southwest winds.
Thu 12 Mar
Sunrise:
Sunset:
Blustery showers, some heavy and sleety on the tops, and some sunny intervals. Strong to gale west or southwest 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.