Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence for generally settled conditions over the next 5 days with lower confidence in timing and detail of any isolated showers.
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
A few afternoon showers possible, otherwise dry with some bright or sunny intervals. Light winds.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
<05% | <05% | 20% | 30% | 30% | <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 |
SE
9
|
S
6
|
W
6
|
SW
7
|
NW
11
|
N
12
|
| 300m |
E
7
|
SE
5
|
SW
4
|
SW
5
|
NW
6
|
N
6
|
| Valley |
E
2
|
S
4
|
SW
4
|
SW
5
|
NW
6
|
N
5
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 12 | 7 | 8 | 10 | 16 | 17 |
| 300m | 10 | 6 | 7 | 7 | 11 | 12 |
| Valley | 8 | 5 | 7 | 8 | 11 | 12 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
9°
|
10°
|
12°
|
11°
|
11°
|
8°
|
| 300m |
8°
|
11°
|
14°
|
13°
|
13°
|
10°
|
| Valley |
8°
|
12°
|
15°
|
14°
|
13°
|
11°
|
| Freezing Level |
2,100m
|
2,100m
|
2,000m
|
2,000m
|
2,000m
|
1,900m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
7°
|
8°
|
11°
|
10°
|
8°
|
5°
|
| 300m |
6°
|
10°
|
13°
|
13°
|
12°
|
8°
|
| Valley |
8°
|
11°
|
14°
|
13°
|
12°
|
10°
|
Additional weather information
Meteorologist's view
A mostly settled day on the hills with just the odd afternoon shower. Strong sunshine will often be hazy with largely cloudy skies, however suitable sun protection is advised.
Weather
A mostly cloudy day with some bright or sunny intervals breaking through at times. A few afternoon showers possible but otherwise dry. Fog patches may start to form in the valleys later in the evening.
Chance of cloud-free hill tops
90%.
Low cloud and visibility
Cloud bases above summits for the most part however any showers may lower cloud base briefly to 700-900m. Generally very good visibility but may deteriorate briefly in any passing showers.
Mountain weather information
Weather
Early morning valley fog will quickly clear to leave a mostly dry day with variable cloud and bright or sunny intervals. Light or moderate northerly winds.
Chance of cloud-free hill tops
80%.
Maximum wind speed expected
North 10-15mph.
Temperature
- At 700m Around plus 7C.
- Valley Plus 7C, rising to 14C in the afternoon.
- Freezing level Above summits.
Low cloud and visibility
A few fog patches possible in the early morning before lifting, giving some isolated low cloud bases of around 400m for a time in the morning. Cloud generally above summits for the rest of the day but some lingering bases at 700-900m at times. Visibility very good but poor in any fog.
Mountain weather information
Tue 28 Apr
Sunrise:
Sunset:
Dry with sunny spells. Light to moderate northeasterly winds.
Wed 29 Apr
Sunrise:
Sunset:
Dry with plenty long sunny spells. Light easterly winds.
Thu 30 Apr
Sunrise:
Sunset:
Another dry day with long sunny spells. Breezy easterly 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.