Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for cold weather for the next few days. High for changeable weather from Friday into the weekend but low for daily detail.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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.
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.
Thunderstorms
Lightning is a significant mountain hazard which can result in serious injury or death. Mountain terrain often leaves one highly exposed to lightning strikes. Hail may give unpleasant conditions with torrential rain and localised flash flooding also possible, mainly in Summer months.
Mountain weather forecast
Bitterly cold with a chance of snow showers
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
<05% | 10% | 20% | 30% | 30% | 40% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
N
36
|
N
31
|
NW
27
|
NW
28
|
NW
29
|
NW
24
|
| 300m |
N
18
|
N
15
|
NW
17
|
NW
17
|
NW
17
|
NW
14
|
| Valley |
N
15
|
N
12
|
NW
14
|
NW
14
|
NW
14
|
NW
12
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 48 | 41 | 37 | 38 | 40 | 32 |
| 300m | 33 | 28 | 28 | 29 | 29 | 24 |
| Valley | 32 | 27 | 27 | 28 | 28 | 23 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-2°
|
-3°
|
-2°
|
-2°
|
-3°
|
-3°
|
| 300m |
0°
|
-1°
|
1°
|
1°
|
-1°
|
-1°
|
| Valley |
1°
|
1°
|
2°
|
2°
|
0°
|
0°
|
| Freezing Level |
200m
|
100m
|
300m
|
300m
|
200m
|
200m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-12°
|
-12°
|
-11°
|
-11°
|
-12°
|
-11°
|
| 300m |
-6°
|
-7°
|
-5°
|
-5°
|
-7°
|
-7°
|
| Valley |
-4°
|
-4°
|
-3°
|
-3°
|
-5°
|
-5°
|
Additional weather information
Meteorologist's view
Be prepared for winter conditions with strong summit winds and severe wind chill. Conditions underfoot are likely to be icy down to low elevations.
Weather
A dry, sunny start. Scattered snow showers from late morning, falling as rain or sleet at low levels. Cloud increasing with showers more frequent late afternoon and evening. Bitterly cold in strong winds.
Chance of cloud-free hill tops
90%
Low cloud and visibility
Poor in any passing snow showers. Otherwise excellent visibility with cloud above the summits.
Mountain weather information
Weather
Remaining very cold with a few passing snow showers in the morning, otherwise a fair amount of dry weather expected. Strong northwesterly winds will make for severe wind chill. Clear skies overnight.
Chance of cloud-free hill tops
80%
Maximum wind speed expected
Northwesterly 30 mph easing to 15-20 mph from late afternoon.
Temperature
- At 700m Minus 1 Celsius
- Valley Minus 3 rising to 3 Celsius
- Freezing level 300 metres
Low cloud and visibility
Generally excellent visibility with little in the way of summit cloud. Cloud briefly lowering to 900 metres as showers pass by.
Mountain weather information
Fri 21 Nov
Sunrise:
Sunset:
Dry and cold for most of the day. Rain, briefly preceded by snow will, spread east later in the day.
Sat 22 Nov
Sunrise:
Sunset:
Mainly dry with variable cloud cover, chance of a few showers later. Less cold.
Sun 23 Nov
Sunrise:
Sunset:
Cloudy with occasional rain.
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.