Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for changeable weather pattern for the next few days with some showers interspersed with drier, brighter weather. Windy at times too.
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 with rain at first, then mainly dry with sunny spells. Windy on the tops.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
50% | 20% | <05% | <05% | <05% | <05% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
S
22
|
SW
28
|
SW
31
|
SW
31
|
SW
33
|
SW
33
|
| 300m |
S
5
|
SW
14
|
SW
19
|
SW
19
|
SW
18
|
SW
16
|
| Valley |
SW
5
|
SW
13
|
SW
18
|
SW
17
|
SW
15
|
SW
15
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 30 | 38 | 44 | 44 | 46 | 46 |
| 300m | 14 | 27 | 33 | 32 | 32 | 31 |
| Valley | 18 | 29 | 34 | 31 | 31 | 32 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
12°
|
12°
|
11°
|
12°
|
11°
|
9°
|
| 300m |
13°
|
14°
|
14°
|
15°
|
13°
|
11°
|
| Valley |
14°
|
16°
|
16°
|
16°
|
14°
|
12°
|
| Freezing Level |
2,700m
|
2,300m
|
2,100m
|
2,100m
|
2,100m
|
2,200m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
8°
|
7°
|
7°
|
7°
|
6°
|
4°
|
| 300m |
12°
|
12°
|
11°
|
11°
|
10°
|
8°
|
| Valley |
13°
|
13°
|
12°
|
13°
|
11°
|
9°
|
Additional weather information
Meteorologist's view
Note winds will become strong over higher ridges/summits making walking difficult.
Weather
Cloudy at first with overnight rain soon dying out. Then a mainly dry day and becoming brighter with sunny spells.
Chance of cloud-free hill tops
40% at first, improving 80% during the morning.
Low cloud and visibility
Misty at first with patches of poor visibility. Also extensive cloud cover down around 600 to 700m. Visibility soon becoming good with clouds lifting and breaking up during the morning.
Mountain weather information
Weather
Mainly cloudy with patchy light rain developing in the morning, becoming drier and brighter during the afternoon.
Chance of cloud-free hill tops
60%
Maximum wind speed expected
Southwest winds, strong on the tops, average speeds 20 to 25mph with gusts 35mph.
Temperature
- At 700m 9 Celsius.
- Valley 10 Celsius rising to 19 Celsius.
- Freezing level Above the summits.
Low cloud and visibility
Good visibility becoming poor in rain. Extensive cloud cover above about 700 to 800m becoming more broken in the afternoon.
Mountain weather information
Fri 19 Sep
Sunrise:
Sunset:
Sunny spells and scattered showers during the day. Fresh west winds.
Sat 20 Sep
Sunrise:
Sunset:
Mainly dry although rather cloudy at times with a few showers. Strong northeasterly winds.
Sun 21 Sep
Sunrise:
Sunset:
Dry with sunny periods and strong northeast winds, gales on the tops. Feeling colder.
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.