Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for a generally settled spell of weather. Low confidence for extent of any rain on Saturday.
This evening forecast
A dry and cloudy start. Skies then clear allowing fog and mist to form in the valleys. Light 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
Early morning fog clearing, then dry with some sunshine
| 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% | 00% | 00% | 00% | 00% | 00% | 00% | 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 |
N
16
|
NE
15
|
NE
16
|
E
14
|
E
14
|
E
15
|
E
12
|
NE
16
|
| 300m |
N
9
|
N
9
|
NE
10
|
E
11
|
E
11
|
E
11
|
E
8
|
NE
9
|
| Valley |
N
7
|
N
7
|
NE
7
|
E
10
|
E
10
|
E
10
|
E
7
|
NE
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 | 22 | 21 | 23 | 22 | 22 | 22 | 17 | 23 |
| 300m | 16 | 15 | 17 | 19 | 19 | 19 | 14 | 15 |
| Valley | 15 | 13 | 14 | 17 | 18 | 18 | 13 | 12 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
5°
|
4°
|
5°
|
6°
|
7°
|
8°
|
7°
|
5°
|
| 300m |
7°
|
6°
|
7°
|
8°
|
10°
|
10°
|
10°
|
7°
|
| Valley |
8°
|
7°
|
8°
|
10°
|
11°
|
12°
|
11°
|
8°
|
| Freezing Level |
1,700m
|
1,700m
|
1,600m
|
1,500m
|
1,500m
|
1,500m
|
1,500m
|
1,600m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
1°
|
0°
|
0°
|
2°
|
3°
|
4°
|
4°
|
1°
|
| 300m |
4°
|
3°
|
4°
|
6°
|
7°
|
8°
|
8°
|
4°
|
| Valley |
6°
|
5°
|
6°
|
8°
|
9°
|
10°
|
10°
|
6°
|
Additional weather information
Meteorologist's view
Be prepared for strong sunshine and a risk sunburn and dehydration on long hikes.
Weather
Clear overnight with isolated mist and fog patches in valleys. Fog and mist clearing quickly after sunrise, a dry and with some sunshine breaking through during the morning. Some unbroken sunshine during the afternoon. Light easterly winds.
Chance of cloud-free hill tops
80%
Low cloud and visibility
Some cloud below 300 metres at first, this lifting and breaking to patches around 700 metres by mid-morning. Very good visibility in the afternoon with little in the way of cloud on the summits.
Mountain weather information
Weather
Mist or fog patches overnight. These clear quickly through the morning, leading to another dry day with prolonged sunshine. Winds strengthening later in the day.
Chance of cloud-free hill tops
100%
Maximum wind speed expected
Easterly average speeds of 20 mph, strengthening to average speeds 30 mph with gust 45 mph by evening
Temperature
- At 700m Plus 9 Celsius
- Valley Plus 5 rising to 15 Celsius
- Freezing level Above summits
Low cloud and visibility
Patchy mist or fog overnight in the valleys, clearing quickly from sunrise. Visibility very good with little in the way of summit cloud for the rest of the day.
Mountain weather information
Thu 30 Apr
Sunrise:
Sunset:
Dry with prolonged sunshine, rain arriving late evening. Strong to gale southeasterly summit winds. Freezing level above summits.
Fri 1 May
Sunrise:
Sunset:
Rain at first clears, leading to a dry day with sunny spells. Light southeasterlies. Freezing level above summits.
Sat 2 May
Sunrise:
Sunset:
Scattered showers and sunny spells. Light southwesterly winds. Freezing level above summits.
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.