Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for unsettled weather through Tuesday before changing to dry and settled conditions from midweek onwards.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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.
Severe Chill Effect
Wind significantly lowers the ‘feels-like’ temperature relative to the actual temperature, with even moderate winds significantly adding to the chilling effect. Strong winds can result in a severe and debilitating wind chill many degrees below the actual temperature. This effect will be enhanced in rain or wet snow. Without protection, prolonged exposure could result in frost nip or frostbite on exposed parts of the body and/or hypothermia.
Mountain weather forecast
Cloudy with rain in the evening. Strong to gale force winds.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
<05% | <05% | <05% | 10% | 60% | 60% |
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
45
|
S
40
|
S
39
|
S
38
|
S
36
|
S
27
|
| 300m |
S
22
|
S
21
|
S
22
|
S
22
|
S
19
|
S
15
|
| Valley |
S
17
|
S
16
|
S
18
|
S
18
|
S
15
|
S
11
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 60 | 54 | 53 | 52 | 50 | 36 |
| 300m | 38 | 35 | 36 | 37 | 33 | 26 |
| Valley | 37 | 33 | 34 | 35 | 30 | 23 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
6°
|
5°
|
6°
|
6°
|
6°
|
6°
|
| 300m |
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
| Valley |
9°
|
9°
|
10°
|
10°
|
9°
|
8°
|
| Freezing Level |
2,100m
|
1,900m
|
1,800m
|
1,800m
|
1,900m
|
1,800m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-2°
|
-2°
|
-1°
|
-1°
|
-1°
|
0°
|
| 300m |
3°
|
3°
|
4°
|
4°
|
3°
|
4°
|
| Valley |
5°
|
5°
|
6°
|
6°
|
6°
|
6°
|
Additional weather information
Meteorologist's view
Strong to gale force winds will make for slow progress and risk of being blown over.
Weather
A cloudy and mostly dry day with outbreaks of light rain through the evening. A few bright spells possible through the afternoon. Strong southwesterly winds, reaching gale force and feeling cold on higher routes. Wind generally easing through the evening.
Chance of cloud-free hill tops
60% much of the day, falling to 10% in the evening.
Low cloud and visibility
Occasional low cloud with base 600-800m through much of the day, becoming more widespread in the evening with bases falling to lower slopes in rain. Visibility poor in cloud and rain, otherwise good.
Mountain weather information
Weather
Low cloud and rain clearing in the early hours to leave a dry day with high level cloud and sunny spells. Light to moderate southwesterly winds becoming northeasterly.
Chance of cloud-free hill tops
20% at first, soon increasing to 100%.
Maximum wind speed expected
Southwest becoming northeast 10-15mph gusting 15-20mph.
Temperature
- At 700m Plus 5 Celsius, rising to 9 Celsius in the afternoon.
- Valley Plus 9 or 10 Celsius.
- Freezing level Above summits.
Low cloud and visibility
Low cloud with base 400-600m at first soon lifting to above summits in the morning, with no low cloud expected and cloud free summits for the rest of the day. Visibility poor in cloud and rain at first, soon increasing to very good.
Mountain weather information
Thu 19 Mar
Sunrise:
Sunset:
High pressure becoming in charge so a dry and settled day with sunny spells and light to moderate winds.
Fri 20 Mar
Sunrise:
Sunset:
Dry with sunny spells and light winds.
Sat 21 Mar
Sunrise:
Sunset:
A continuation of dry and settled conditions with light 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.