Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High for mainly dry weather on Friday once early rain clears then lower confidence for extent of showers over the weekend. High for slightly cooler but mainly dry weather into early next week.
This evening forecast
A dry start to the evening but outbreaks of rain will spread up from the south later. Fresh southeast winds on the tops. Freezing level above summits.
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
Morning showers clearing then mainly dry with light winds.
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
|
|
Chance of precipitation (at 700m) |
70% | 70% | 70% | 30% | 10% | 10% | 10% | 10% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
SE
17
|
SE
15
|
SE
13
|
SE
12
|
SE
11
|
S
9
|
S
9
|
SW
11
|
| 300m |
SE
6
|
SE
6
|
E
7
|
SE
7
|
SE
7
|
S
7
|
S
6
|
SW
6
|
| Valley |
SE
5
|
SE
5
|
E
5
|
SE
6
|
SE
7
|
S
7
|
S
5
|
S
5
|
Wind gust (mph)
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m | 23 | 21 | 18 | 17 | 16 | 14 | 13 | 16 |
| 300m | 12 | 11 | 12 | 11 | 12 | 12 | 9 | 10 |
| Valley | 11 | 11 | 11 | 10 | 11 | 11 | 8 | 9 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
9°
|
8°
|
8°
|
9°
|
10°
|
11°
|
10°
|
9°
|
| 300m |
10°
|
9°
|
10°
|
11°
|
12°
|
13°
|
11°
|
9°
|
| Valley |
11°
|
10°
|
10°
|
12°
|
13°
|
14°
|
12°
|
10°
|
| Freezing Level |
2,700m
|
2,700m
|
2,600m
|
2,500m
|
2,400m
|
1,900m
|
1,800m
|
1,800m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
6°
|
5°
|
5°
|
6°
|
8°
|
9°
|
7°
|
6°
|
| 300m |
9°
|
8°
|
8°
|
9°
|
11°
|
11°
|
10°
|
8°
|
| Valley |
10°
|
9°
|
10°
|
11°
|
12°
|
13°
|
12°
|
9°
|
Additional weather information
Meteorologist's view
Good hillwalking conditions expected once early cloud and outbreaks of rain clear. A risk of sunburn, even during cloudy periods.
Weather
Cloudy in the early hours and to start the day with outbreaks of rain, heavy at times. This will soon clear to leave a mainly dry and cloudy day. Some sunny spells developing from late afternoon.
Chance of cloud-free hill tops
20% becoming 90% through the morning.
Low cloud and visibility
Extensive cloud above 500m at first, quickly clearing. Otherwise visibility will be good with cloud above the summits.
Mountain weather information
Weather
Mainly dry overnight and to start the morning with mist slowly lifting and bright spells developing. Showers will develop from late morning onwards with a chance of hail and thunder. Showers easing during evening.
Chance of cloud-free hill tops
20% at first, becoming 90% during morning.
Maximum wind speed expected
South 5-10mph.
Temperature
- At 700m Plus 5C rising to 11C.
- Valley Plus 10C rising to 16C.
- Freezing level Above summits.
Low cloud and visibility
Patchy fog at first down to low slopes, this slowly lifting. Otherwise, visibility will be mainly good, reducing to few km at times in showers with patchy cloud down to 400m.
Mountain weather information
Sun 3 May
Sunrise:
Sunset:
Early low cloud clearing then some bright spells developing. A few showers are possible, but these dying out in the afternoon. Light winds.
Mon 4 May
Sunrise:
Sunset:
A bright day with sunshine and scattered showers. Feeling cooler with a fresh northwesterly breeze.
Tue 5 May
Sunrise:
Sunset:
Largely dry and bright with just the odd shower. 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.