Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
Moderate at best for shower risk over the weekend and early next week with uncertainties in location of showers. A chance of more settled conditions by mid-week, but large uncertainty at this stage.
This evening forecast
A generally cloudy evening and start to the night. Scattered showers gradually die out through the evening. Light South or Southwest winds across the summits.
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.
Mountain weather forecast
Mainly dry and bright with sunny spells.
| 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) |
10% | 40% | 20% | 10% | 20% | 20% | <05% | <05% |
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
4
|
SE
6
|
SE
10
|
SE
11
|
SE
13
|
SE
14
|
SE
14
|
E
13
|
| 300m |
SE
1
|
E
4
|
SE
6
|
SE
7
|
SE
9
|
SE
10
|
SE
8
|
E
6
|
| Valley |
E
1
|
E
3
|
SE
5
|
SE
6
|
SE
9
|
SE
10
|
SE
7
|
E
5
|
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 | 6 | 8 | 13 | 14 | 17 | 19 | 18 | 18 |
| 300m | 3 | 6 | 9 | 10 | 13 | 15 | 12 | 11 |
| Valley | 3 | 6 | 8 | 10 | 14 | 16 | 12 | 10 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
13°
|
12°
|
12°
|
12°
|
13°
|
13°
|
12°
|
12°
|
| 300m |
14°
|
14°
|
14°
|
14°
|
16°
|
16°
|
15°
|
13°
|
| Valley |
15°
|
15°
|
15°
|
16°
|
17°
|
17°
|
16°
|
14°
|
| Freezing Level |
2,800m
|
2,700m
|
2,600m
|
2,600m
|
2,500m
|
2,600m
|
2,600m
|
2,600m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
13°
|
12°
|
11°
|
10°
|
10°
|
10°
|
10°
|
9°
|
| 300m |
14°
|
14°
|
13°
|
14°
|
14°
|
14°
|
14°
|
12°
|
| Valley |
16°
|
15°
|
15°
|
15°
|
16°
|
16°
|
15°
|
14°
|
Additional weather information
Meteorologist's view
High UV levels, sun protection recommended.
Weather
A few showers through the early hours, then most likely a dry day with sunny spells, although a few well scattered showers are possible. A dry evening with some late sunshine before patchy cloud arrives late evening.
Chance of cloud-free hill tops
70%.
Low cloud and visibility
Poor visibility to start with cloud down to 200-300m on the southern slopes. Visibility becoming very good as cloud lifts above the summits around mid-morning. Tops then mostly cloud free, although cloud may briefly drop to 700m at times. Some patchy cloud above 300m across southern and eastern slopes in the evening.
Mountain weather information
Weather
Dry through the early hours with increasing amounts of high cloud. Then a mainly cloudy day. A lot of dry weather, but a few showers are possible, these may be heavy with a risk of thunder, most likely in the afternoon and early evening.
Chance of cloud-free hill tops
80%.
Maximum wind speed expected
East 5-10 gusting 15-20 mph.
Temperature
- At 700m Plus 10 Celsius rising to 14 Celsius.
- Valley Plus 14 Celsius rising to 20 Celsius.
- Freezing level Above the summits.
Low cloud and visibility
Generally very good visibility, although some patchy low cloud to start the day. Visibility temporarily dropping to poor if caught in a heavy shower.
Mountain weather information
Mon 21 Jul
Sunrise:
Sunset:
Most likely a rather cloudy day with showers, perhaps heavy at times. Light winds.
Tue 22 Jul
Sunrise:
Sunset:
Further showers, although likely to be lighter than previous days. Light winds
Wed 23 Jul
Sunrise:
Sunset:
A chance of some drier more settled conditions developing, although large uncertainties.
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.