Mourne Mountains Mountain weather forecast table
Confidence
A very cold outlook for the coming days with some wintry showers. Slightly milder air returns on Friday but there are uncertainties in how quickly this will move across the country. Keep an eye for the latest forecast towards the weekend with low confidence for the forecast on Sunday at this time.
This evening forecast
Snow showers continuing through the evening, fresh northerly winds. Bitterly cold with severe windchill. Showers tending to die out later.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Severe Chill Effect
Poor Visibility
Blizzards
Heavy Persistent Snow
Thunderstorms
Mountain weather forecast
A few early wintry showers will clear but it will remain cloudy and very cold with fresh northwesterly 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) |
40% | 40% | 20% | 30% | 20% | 20% | 20% | 20% |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
NW
25
|
NW
28
|
NW
28
|
NW
30
|
NW
28
|
NW
28
|
NW
27
|
NW
23
|
| 300m |
NW
14
|
NW
17
|
NW
18
|
NW
18
|
NW
17
|
NW
17
|
NW
14
|
NW
12
|
| Valley |
NW
12
|
NW
14
|
NW
15
|
NW
15
|
NW
15
|
NW
14
|
NW
12
|
NW
11
|
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m | 33 | 38 | 38 | 41 | 37 | 38 | 37 | 31 |
| 300m | 24 | 28 | 30 | 30 | 28 | 28 | 26 | 22 |
| Valley | 23 | 27 | 27 | 28 | 27 | 26 | 24 | 20 |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-3°
|
-3°
|
-3°
|
-3°
|
-2°
|
-1°
|
-2°
|
-2°
|
| 300m |
-1°
|
-1°
|
-1°
|
0°
|
1°
|
1°
|
0°
|
0°
|
| Valley |
0°
|
0°
|
0°
|
0°
|
2°
|
3°
|
1°
|
0°
|
| Freezing Level |
200m
|
200m
|
200m
|
200m
|
300m
|
400m
|
300m
|
300m
|
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-11°
|
-12°
|
-12°
|
-12°
|
-10°
|
-9°
|
-10°
|
-10°
|
| 300m |
-6°
|
-7°
|
-7°
|
-7°
|
-5°
|
-4°
|
-5°
|
-6°
|
| Valley |
-5°
|
-5°
|
-6°
|
-5°
|
-3°
|
-2°
|
-4°
|
-4°
|
Additional weather information
Meteorologist's view
Severe windchill in the freezing conditions, with strong winds and dampness of showers enhancing that further in the east.
Weather
Some overnight snow showers likely but tending to die out during the day leaving a mainly dry day but quite cloudy in the morning, some sunny spells developing in the afternoon. Mist and fog forming easily during the evening and a very cold night with clear spells developing later on Thursday.
Chance of cloud-free hill tops
40%, low cloud tending to stick around the summits in the morning, best chance in the afternoon
Low cloud and visibility
Layers of broken cloud are expected above 500m, cloud tending to break and thin in the afternoon with the chance of temporary clearance of the summits. Visibility will be good below the cloud but poor at times towards the summits and in any showers.
Mountain weather information
Weather
A very cold start on Friday with a severe frost and hardening of any lying snow. Clear skies overnight will lead into a dry and bright day with sunny spells. Light northerly winds will turn southerly during the morning and strengthen, with slightly milder air moving across the area. Clouding over later in the afternoon with some light rain or snow arriving from the west in the evening. Freezing level will lift towards the summits during the night.
Chance of cloud-free hill tops
90% falling to 50% later, patchy cloud initially will lift and clear, cloud thickening in the west later.
Maximum wind speed expected
Northerly turning southwesterly 10 mph, strengthening in the afternoon to 35mph gusts 45mph later in the evening.
Temperature
- At 700m Minus 3 rising to Plus 1 Celsius later.
- Valley Minus 6 rising to Plus 3 Celsius later.
- Freezing level 300m lifting to 1000m later.
Low cloud and visibility
Patches of cloud around summits in the morning, lifting and clearing. Cloud forming in the afternoon around summits until. Excellent visibility in the morning, becoming hazier in the afternoon as cloud forms, turning moderate later as rain or sleet returns.
Mountain weather information
Sat 22 Nov
Overnight rain clearing early and a dry day although remaining cloudy in the morning but then brighter spells developing, light southwesterly winds and still feeling chilly in the damp conditions. Freezing level just above all summits.
Sun 23 Nov
Low confidence in forecast for Sunday but likely to be a cloudy and cold day with some rain or sleet and strong winds. Freezing level just above all summits.
Mon 24 Nov
Continuing the cold, cloudy theme but details limited for Monday, likely to be northerly winds and a cloudy day.
Summit specific forecast
Mountain summit forecast map
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.