Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence for the general themes, but some uncertainty on the extent of the Sunday's rain and timings of improvements in the afternoon.
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.
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
Cloudy, patchy light rain. Drier and brighter for a time early afternoon.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
40% | 30% | 30% | 20% | 20% | 20% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
NE
11
|
NE
9
|
NE
11
|
NE
13
|
NE
16
|
N
18
|
| 300m |
NE
2
|
NE
7
|
NE
8
|
NE
8
|
NE
10
|
N
9
|
| Valley |
NE
2
|
NE
6
|
NE
7
|
NE
7
|
N
8
|
N
8
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 15 | 12 | 15 | 18 | 23 | 26 |
| 300m | 6 | 10 | 12 | 14 | 17 | 18 |
| Valley | 6 | 9 | 12 | 12 | 16 | 17 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
6°
|
6°
|
7°
|
7°
|
7°
|
6°
|
| 300m |
8°
|
10°
|
10°
|
11°
|
10°
|
8°
|
| Valley |
9°
|
11°
|
12°
|
12°
|
11°
|
10°
|
| Freezing Level |
1,700m
|
1,600m
|
1,700m
|
1,800m
|
1,800m
|
1,700m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
2°
|
3°
|
4°
|
4°
|
3°
|
2°
|
| 300m |
8°
|
8°
|
9°
|
9°
|
8°
|
6°
|
| Valley |
9°
|
10°
|
10°
|
11°
|
10°
|
8°
|
Additional weather information
Meteorologist's view
Risk of difficult navigation in hill fog, especially during the early morning.
Weather
Cloudy with patchy hill fog and light rain, mainly through the morning. Turning drier and brighter for a time in the afternoon before a risk of further low cloud and hill fog encroaches from the east.
Chance of cloud-free hill tops
30% morning and late afternoon. 60% around midday/early afternoon.
Low cloud and visibility
Occasional patches of low cloud above 600m in the morning, lifting above summits for a time in the afternoon before dropping again in the evening. Visibility will be generally good below cloud bases, but perhaps deteriorating to a few kilometres in rain.
Mountain weather information
Weather
A mainly dry and bright day after any early morning hill fog lifts above tops. Best of the sunshine in the afternoon.
Chance of cloud-free hill tops
60% rising to 90% in afternoon.
Maximum wind speed expected
10-15mph.
Temperature
- At 700m Plus 4 rising 9 Celsius.
- Valley Plus 9 rising 15 Celsius.
- Freezing level Above summits.
Low cloud and visibility
Patches of low cloud around 800m in the morning, lifting above all tops in the afternoon. Visibility will be good.
Mountain weather information
Tue 5 May
Sunrise:
Sunset:
Bright but fairly cloudy with a few showery outbreaks of rain. Gentle winds. Freezing level above summits.
Wed 6 May
Sunrise:
Sunset:
Feeling colder with sunny spells and the odd shower. Gentle winds.
Thu 7 May
Sunrise:
Sunset:
Mainly dry and bright with variable cloud and a few light showers. Gentle 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.