Mountain weather

Mourne Mountains

Mourne Mountains Mountain weather forecast table

Confidence

High for much of Tuesday, but low for timing of rain Tuesday evening or night. High for strong winds on Thursday, but low for amount and timing of any rain. High confidence for a change to colder showery conditions Friday and Saturday, but low for details.

Sunrise:
Sunset:
Mountain hazards

Mountain weather hazards

Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.

hazard 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

Dry and brightening though the morning. Afternoon showers. Heavy evening rain.

06:00 09:00 12:00 15:00 18:00 21:00
Weather
(at 700m)
Fog Cloudy Light shower (day) Light shower (day) Light rain Heavy rain
Chance of precipitation
(at 700m)
<05% <05% 40% 40% 70% 90%

Wind direction and speed (mph)
Altitude above mean sea level
06:00 09:00 12:00 15:00 18:00 21:00
600m W
25
W
17
W
12
NW
5
E
8
E
11
300m W
10
W
9
W
8
NW
3
E
4
E
7
Valley W
9
W
8
W
7
NW
3
E
4
E
6
Wind gust (mph)
Altitude above mean sea level
06:00 09:00 12:00 15:00 18:00 21:00
600m 35 23 17 8 12 16
300m 20 16 13 5 8 11
Valley 21 16 13 6 7 11

Altitude above mean sea level
06:00 09:00 12:00 15:00 18:00 21:00
600m
300m
10°
10°
Valley
11°
11°
Freezing Level
1,300m
1,300m
1,300m
1,400m
1,400m
1,400m

Altitude above mean sea level
06:00 09:00 12:00 15:00 18:00 21:00
600m
-1°
300m
10°
Valley
10°
11°

Additional weather information

Meteorologist's view

Some uncertainty in timing of rain spreading north in the evening.

Weather

Overnight rain soon clears in the early hours with the odd clear spell. Then a generally cloudy, dry morning. Brighter spells develop from late morning, but a few sharp showers also break out around midday and early afternoon. Cloud thickening and lowering through the afternoon with further showers possible. More persistent and heavy rain spreads north in the evening and start of the night.

Chance of cloud-free hill tops

40% rising to 80% in the morning. Falling to nil in the evening.

Low cloud and visibility

Often poor visibility in patchy cloud above 400-600m early to mid-morning. Visibility becoming good as cloud lifts above the summits by late morning. Some temporary, localised reductions in visibility in showers. More general deterioration to very poor visibility by evening in heavy rain and extensive cloud down to lower slopes.

Sunrise:
Sunset:

Mountain weather information

Weather

Extensive low cloud and often heavy rain through the early hours. Rain clears east around dawn, although hill fog taking a little longer to clear. Then a dry bright day with sunny spells. Dry but cloudy overnight.

Chance of cloud-free hill tops

20% early morning, soon becoming 90% or more.

Maximum wind speed expected

North 15 gusting 20 mph, easing early afternoon. Becoming southwest 5-10 mph later afternoon, but increasing to 15 gusting 25 mph early in the night.

Temperature

  • At 700m Plus 2 Celsius, rising to 5 Celsius.
  • Valley Plus 5 Celsius, rising to 11 Celsius.
  • Freezing level Above the summits.

Low cloud and visibility

Extensive cloud, bases around 400m early hours and to start the day. Cloud dispersing from around mid-morning to leave very good visibility.

Mountain weather information

Thu 21 Mar

Sunrise:
Sunset:

Cloudy with strong to gale force southwest winds. Rain and hill fog for a time. Dry and clearer later, but winds still strong.

Fri 22 Mar

Sunrise:
Sunset:

Strong, gusty, westerly winds and scattered blustery showers, turning heavier through the day with a risk of thunder. Showers turning to snow on higher ground in the afternoon as freezing level drops below the summits.

Sat 23 Mar

Sunrise:
Sunset:

Cold, with strong north or northwest winds and scattered showers, wintery on the tops. Perhaps turning dry with winds easing later in the day.

Updated at:

Summit specific forecast

Mountain summit forecast map

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