Mountain weather
Mourne Mountains Mountain weather forecast table
Confidence
High confidence for general weather pattern to the end of the week, but low confidence for finer details in sunshine amounts and chance of rain or showers on Friday and over the weekend.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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.
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.
Mountain weather forecast
Windy. Low cloud and rain in the morning. Sunny spells in the afternoon.
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
Weather (at 700m) |
|
|
|
|
|
|
Chance of precipitation (at 700m) |
80% | 40% | 30% | 10% | 20% | <05% |
Wind direction and speed (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
SW
21
|
SW
21
|
W
26
|
W
30
|
W
31
|
W
32
|
| 300m |
SW
11
|
SW
11
|
W
16
|
W
19
|
W
20
|
W
18
|
| Valley |
SW
9
|
SW
10
|
W
15
|
W
17
|
W
17
|
W
14
|
Wind gust (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m | 28 | 29 | 39 | 44 | 47 | 46 |
| 300m | 19 | 19 | 29 | 34 | 36 | 33 |
| Valley | 18 | 20 | 29 | 33 | 34 | 29 |
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
7°
|
9°
|
11°
|
11°
|
10°
|
7°
|
| 300m |
9°
|
11°
|
14°
|
14°
|
12°
|
9°
|
| Valley |
10°
|
12°
|
15°
|
15°
|
14°
|
10°
|
| Freezing Level |
2,700m
|
2,400m
|
2,000m
|
1,800m
|
1,600m
|
1,200m
|
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
3°
|
5°
|
7°
|
6°
|
5°
|
1°
|
| 300m |
7°
|
8°
|
11°
|
10°
|
9°
|
5°
|
| Valley |
8°
|
10°
|
12°
|
12°
|
10°
|
7°
|
Additional weather information
Meteorologist's view
Unseasonably strong winds in the afternoon and evening. Moderate UV levels in the afternoon.
Weather
Extensive low cloud and rain and drizzle through much of the morning. Turning mostly dry and brighter around midday with sunny spells developing in the afternoon, but a few showers, these mostly early afternoon and again early evening. Clear skies from dusk.
Chance of cloud-free hill tops
Nil in the morning rising close to 100% in afternoon
Low cloud and visibility
Very poor visibility with extensive cloud above 300m in the morning, rising to higher summits around midday. Good visibility with cloud above the summits in the afternoon and evening.
Mountain weather information
Weather
Mostly cloudy through the early hours. Some bright or sunny spells and a few blustery showers possible in the morning. Brighter in the afternoon and mainly dry. Very windy for the time of year.
Chance of cloud-free hill tops
80%
Maximum wind speed expected
West 30mph gusting 50mph over ridges and summits, easing to 20mph gusting 30mph in the evening.
Temperature
- At 700m Plus 5 Celsius rising to 10 Celsius.
- Valley Plus 9 Celsius rising to plus 15 Celsius.
- Freezing level Above the summits.
Low cloud and visibility
Occasional patchy cloud above 500m early morning, but this rising above the summits by mid-morning.
Mountain weather information
Fri 5 Jul
Sunrise:
Sunset:
Cool and often rather cloudy with a chance of showers for a time, but less windy than Thursday with moderate west or southwest winds.
Sat 6 Jul
Sunrise:
Sunset:
Remaining cool and mostly cloudy. A spell of rain is likely, but uncertainty over timing and exact location. Moderate westerly winds.
Sun 7 Jul
Sunrise:
Sunset:
Another cool day. Likely to be rather cloudy with scattered showers and light winds. Showers could turn heavy if sunny spells break out.
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.