Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
Mainly high confidence, moderate with regard to shower detail.
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.
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
Cloudier at first, sunny spells with possibly the odd shower later.
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
10% | <05% | <05% | <05% | <05% | 10% |
Wind direction and speed (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
N
20
|
NE
14
|
NE
12
|
NE
12
|
NE
10
|
N
12
|
| 300m |
N
8
|
NE
8
|
NE
8
|
NE
8
|
NE
5
|
N
6
|
| Valley |
N
9
|
NE
8
|
NE
7
|
NE
7
|
N
6
|
N
6
|
Wind gust (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m | 29 | 20 | 17 | 18 | 14 | 17 |
| 300m | 16 | 14 | 13 | 14 | 10 | 13 |
| Valley | 18 | 14 | 13 | 14 | 11 | 13 |
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
9°
|
10°
|
12°
|
13°
|
13°
|
12°
|
| 300m |
11°
|
13°
|
15°
|
16°
|
15°
|
13°
|
| Valley |
12°
|
14°
|
16°
|
17°
|
16°
|
14°
|
| Freezing Level |
2,600m
|
2,500m
|
2,600m
|
2,500m
|
2,600m
|
2,500m
|
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
5°
|
7°
|
10°
|
10°
|
11°
|
10°
|
| 300m |
10°
|
12°
|
14°
|
14°
|
14°
|
12°
|
| Valley |
10°
|
13°
|
15°
|
16°
|
15°
|
13°
|
Additional weather information
Meteorologist's view
Nothing to add.
Weather
Cloud in the morning with a few outbreaks of rain. Brightening through the morning to leave a few sunny spells for the rest of the day, with a low chance of the odd shower.
Chance of cloud-free hill tops
60-70% at first, improving 90%
Low cloud and visibility
Good or very good visibility, temporarily reducing in any showers. Scattered cloud base 400-600m mostly in any showers
Mountain weather information
Weather
Low cloud, mist and fog at first. This breaking up during the morning to leave good sunny spells for the rest of the day.
Chance of cloud-free hill tops
20% at first, improving 90% by around midday.
Maximum wind speed expected
Northerly or Northwesterly 15-20 mph
Temperature
- At 700m Plus 7 rising to plus 11 Celsius
- Valley Plus 10 rising to plus 15 Celsius
- Freezing level Above summits
Low cloud and visibility
Broken low cloud base 300-500m at first, breaking and clearing by midday. Visibility poor in mist or fog at first, becoming good or very good later.
Mountain weather information
Sun 19 May
Sunrise:
Sunset:
Cloudy at first, soon becoming sunny with the odd shower. Moderate north to northeasterly winds.
Mon 20 May
Sunrise:
Sunset:
East mist or fog, then mainly dry and sunny on Monday. Light southeasterly winds.
Tue 21 May
Sunrise:
Sunset:
Bright spells and scattered heavy showers. Light southerly winds.
Updated at:
Summit specific forecast
Mountain summit forecast map
Loading map…
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.