Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for turning much more unsettled lower for daily details
This evening forecast
Dry with clear spells and a light to moderate southwest breeze. Freezing level near the summits, but valleys also turning cold with some frost and patchy fog.
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.
Mountain weather forecast
Dry with sunny spells but cloudier later with hill fog. Low level fog patches possible at first.
| 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% | 10% | 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 |
W
8
|
NW
7
|
W
7
|
W
8
|
W
7
|
W
6
|
W
10
|
W
10
|
| 300m |
W
5
|
NW
4
|
NW
4
|
NW
5
|
W
4
|
W
4
|
W
5
|
W
5
|
| Valley |
W
5
|
W
4
|
W
4
|
NW
4
|
SW
4
|
W
4
|
W
4
|
W
4
|
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 | 11 | 9 | 9 | 11 | 11 | 8 | 15 | 14 |
| 300m | 8 | 6 | 7 | 7 | 8 | 7 | 10 | 9 |
| Valley | 8 | 6 | 7 | 7 | 7 | 6 | 9 | 9 |
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
1°
|
1°
|
1°
|
1°
|
2°
|
1°
|
0°
|
0°
|
| 300m |
2°
|
2°
|
2°
|
1°
|
4°
|
4°
|
2°
|
1°
|
| Valley |
3°
|
3°
|
3°
|
2°
|
4°
|
4°
|
3°
|
2°
|
| Freezing Level |
900m
|
800m
|
800m
|
700m
|
700m
|
800m
|
800m
|
800m
|
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-4°
|
-4°
|
| 300m |
0°
|
0°
|
0°
|
-1°
|
2°
|
2°
|
0°
|
-1°
|
| Valley |
1°
|
1°
|
1°
|
0°
|
3°
|
3°
|
1°
|
0°
|
Additional weather information
Meteorologist's view
The tables look fine
Weather
Clear spells on the hills overnight but chance of some low level fog in the valleys. This valley fog lasting into the morning dispersing by afternoon, the hills staying mainly clear and sunny, though towards mid to late afternoon, cloud will spread from the west. Apart from perhaps the odd very light shower, it is expected to stay dry.
Chance of cloud-free hill tops
More than 90%, falling 30% from mid afternoon.
Low cloud and visibility
Valleys and lowest foothills may be affected by fog overnight and into the morning. Later in the day cloud at 600-700m likely arriving from the west. Away from these two features, visibility good.
Mountain weather information
Weather
A dry night, some valley fog possible, then cloudy with a short spell of heavy rain around dawn. This clearing to leave a bright day with sunny spells, perhaps just a brief wintry shower in the afternoon.
Chance of cloud-free hill tops
10% around dawn then rising 90%
Maximum wind speed expected
Southerly 30 gusts 40mph veering westerly 40 gusts 60mph during morning.
Temperature
- At 700m Plus 2 at dawn falling to Minus 2 in the afternoon.
- Valley Plus 6 Celsius at dawn falling to Plus 3 during the afternoon.
- Freezing level 750m rising above summits briefly in morning falling to 300m in the afternoon
Low cloud and visibility
Poor overnight visibility in valley fog. Cloud at 450-600m arriving towards the end of night with occasionally poor visibility in rain below the cloud, then cloud lifting and breaking by mid morning with good visibility for the rest of the day.
Mountain weather information
Fri 24 Jan
Sunrise:
Sunset:
Heavy snow turning to rain for a time overnight with severe southeast gales. Probably a drier interlude in morning before blustery showers arrive, increasingly wintry to low levels. Also storm force westerly winds, even to low levels and some extreme mountain winds - beware of any lull in the winds as the storm centre passes over as they will increase rapidly again.
Sat 25 Jan
Sunrise:
Sunset:
A dry day with some sunshine. Freezing levels around 300m. Fresh summit winds.
Sun 26 Jan
Sunrise:
Sunset:
Likely to be a dry bright start before southeasterly gales bringing rain later, preceded by hill snow.
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.