Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for Tuesday then high for changeable weather for the coming week. Low for detail on Friday.
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.
Gales
Gale force winds (gusts over 50mph) make walking difficult and strenuous with a potential to be blown over by gusts. There is often a marked increase in winds through cols or on exposed ridges and summits. Distances can take longer to cover and compass bearings become harder to follow accurately.
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
Dry and windy with hazy sunshine for most of the day. Rain developing later.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
00% | 00% | 00% | 10% | 30% | 80% |
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
29
|
SE
26
|
SE
23
|
SE
26
|
S
21
|
SW
16
|
| 300m |
SE
10
|
SE
10
|
SE
11
|
SE
10
|
S
6
|
SW
5
|
| Valley |
SE
7
|
SE
7
|
SE
9
|
SE
7
|
SE
4
|
SW
3
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 41 | 36 | 30 | 36 | 29 | 23 |
| 300m | 21 | 19 | 17 | 19 | 14 | 12 |
| Valley | 21 | 18 | 16 | 18 | 12 | 11 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
9°
|
10°
|
10°
|
11°
|
10°
|
10°
|
| 300m |
9°
|
10°
|
12°
|
12°
|
11°
|
10°
|
| Valley |
9°
|
12°
|
13°
|
13°
|
12°
|
10°
|
| Freezing Level |
2,300m
|
2,100m
|
2,600m
|
2,500m
|
2,600m
|
2,600m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
5°
|
5°
|
6°
|
6°
|
6°
|
7°
|
| 300m |
6°
|
8°
|
10°
|
10°
|
10°
|
9°
|
| Valley |
8°
|
10°
|
11°
|
11°
|
11°
|
10°
|
Additional weather information
Meteorologist's view
Be prepared for strong winds at height, especially on the summits. This will slow progress and be prepared for wind chill.
Weather
Most of the day will be dry with some spells of hazy sunshine, some high cloud around. Rain will spread from the west from late afternoon.
Chance of cloud-free hill tops
90% becoming 60% by early evening
Low cloud and visibility
Good visibility with little in the way of cloud on the summits for most of the day. Patchy cloud at 900 metres developing later.
Mountain weather information
Weather
A cloudy start but soon brightening up. Then it will be a bright day with variable amounts of cloud and some hazy sunshine. Occasional rain will spread from the west towards midnight.
Chance of cloud-free hill tops
80%
Maximum wind speed expected
Southwesterly 15 mph
Temperature
- At 700m Plus 6 Celsius
- Valley Plus 7 rising to 16 Celsius
- Freezing level Above the summits
Low cloud and visibility
Poor in areas of cloud down to 700 metres at first, this soon clearing. Then good visibility with patchy cloud around 850 metres in the morning, rising above summits in the afternoon
Mountain weather information
Thu 9 Apr
Sunrise:
Sunset:
A cloudy start with rain. Then brightening up with passing showers, these turning wintry in the afternoon. Freezing level falling to 800 metres by afternoon.
Fri 10 Apr
Sunrise:
Sunset:
After a dry start, rain, briefly preceded by summit snow, will spread northeast by afternoon. Strong to gale southwesterly winds. Freezing level 400 metres rising above summits.
Sat 11 Apr
Sunrise:
Sunset:
Cold and bright with wintry showers. Freezing level 600 metres.
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.