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Mourne Mountains - Mountain weather forecast

Weather warnings

Warnings affecting Mourne Mountains over the next 5 days

Confidence

High for general weather pattern, but lower for detail, especially for Tuesday.

  • This evening
  • Tuesday
  • Wednesday
  • Further outlook

Monday 18 June 2018

Sunset: 22:00
Moon phase: Waxing crescent

Cloud and patchy rain clearing eastwards to leave clear spells into the evening, as well as some capping cloud clinging to the slopes.

Tuesday 19 June 2018

Weather hazards

Poor visibility High likelihood Hide detail

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.

Learn more about poor visibility

Gales Low likelihood Show detail

Gale force winds (gusts over 50mph) make walking difficult and strenuous with a potential to be blown over by gusts. There is often a marked increase in winds through cols or on exposed ridges and summits. Distances can take longer to cover and compass bearings become harder to follow accurately.

Learn more about gales

Headline

Dry at first but soon cloud thickening will bring rain and extensive hill fog. Perhaps some drier, brighter weather for the afternoon.

Weather

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather at 700m Clear night Partly cloudy night Sunny intervals Light rain Mist Cloudy Cloudy Cloudy
Chance of precipitation at 700m 00% 00% 20% 70% 60% 40% 40% 40%

Wind speed and direction

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Altitude above mean sea level
600m W 24 32 W 23 33 W 13 17 S 7 10 S 14 18 S 18 22 S 27 36 SW 34 46
300m W 9 18 W 10 20 SW 5 9 S 4 7 S 9 14 S 8 12 SW 11 20 SW 18 31
Valley W 8 19 W 9 20 SW 2 7 S 3 7 S 7 14 SE 5 10 S 7 17 SW 14 27

Temperature

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Altitude above mean sea level
600m 7 ° 6 ° 6 ° 6 ° 7 ° 9 ° 13 ° 13 °
300m 9 ° 8 ° 9 ° 9 ° 10 ° 10 ° 14 ° 15 °
Valley 10 ° 9 ° 10 ° 10 ° 11 ° 11 ° 14 ° 16 °

Feels like temperature

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Altitude above mean sea level
600m 2 ° 1 ° 3 ° 4 ° 4 ° 6 ° 8 ° 8 °
300m 7 ° 5 ° 8 ° 8 ° 7 ° 9 ° 12 ° 12 °
Valley 9 ° 7 ° 9 ° 10 ° 9 ° 10 ° 14 ° 14 °

Freezing level

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Freezing level i 1,300 m 1,300 m 2,500 m 3,200 m 3,000 m 2,900 m 3,300 m 3,100 m
Sunrise: 04:50
Sunset: 22:00
Moon phase: Waxing crescent

Weather

Dry with largely clear skies through the early hours. Cloud will thicken from the south and southwest through the morning, soon bringing outbreaks of rain and drizzle across the area, along with extensive hill fog. Some heavier bursts of rain are possible, mainly through the first half of the day. Rain may ease for a time during the afternoon, but will never be too far away, leaving a mainly cloudy evening with a few outbreaks of rain.

Chance of cloud-free mountain/hill tops at 700m

90% during the early hours, but soon falling to virtually nil through the morning with hill fog descending down to around 300m, perhaps lower for a time. Improving to around 40% by afternoon.

Visibility

Very good, soon falling to moderate or poor within rain. An improvement is possible through the afternoon.

Meteorologist's view

Only a low risk of gales developing through the evening above 600m. More likely remaining just below gale level.

Wednesday 20 June 2018

Sunrise: 04:50
Sunset: 22:01
Moon phase: First quarter

Weather

A dull, murky morning with further outbreaks of rain and widespread hill fog. Drier, brighter conditions spreading from the northwest later in the afternoon, but remaining mostly cloudy until evening, with skies then clearing.

Maximum wind speed expected

Westerly gales through the early hours, then northwesterly 15-20mph with gusts to 25mph for the bulk of the day.

Chance of cloud-free mountain/hill tops at 700m

Less than 10% through the morning with widespread hill fog above 400-500m, gradually lifting through the day. Patches of hill fog remaining above 600m until late afternoon.

Temperature

  • At 700m Around 8 Celsius.
  • Valley 9 Celsius rising to 15.
  • Freezing level Above summits.

Visibility

Moderate or poor through the morning, especially within rain. Improving steadily to very good by around mid afternoon.

Thursday 21 June 2018

Sunrise: 04:50
Sunset: 22:01
Moon phase: First quarter

Dry and settled conditions expected with varying cloud amounts, but some sunshine likely. Strong northwest winds.

Friday 22 June 2018

Sunrise: 04:51
Sunset: 22:01
Moon phase: First quarter

High pressure to the west of the UK will maintain dry conditions with winds becoming light through the day.

Saturday 23 June 2018

Sunrise: 04:51
Sunset: 22:01
Moon phase: First quarter

Largely dry with light to moderate winds, but likely turning cloudier later.

Issued at:
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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.

The Mourne Mountains include the highest mountains in Northern Ireland; the highest of these is Slieve Donard standing at 850 metres at the northeastern edge of the Mournes, overlooking Newcastle and Dundrum Bay. At the summit of Slieve Donard there is a cairn and a small stone tower, which is part of the Mourne Wall, which passes over the mountain’s southern and western shoulders.

The Mourne Wall is a 35 kilometre dry stone wall that crosses fifteen summits, constructed between 1904 and 1922 by the Belfast Water Commissioners to define and enclose the catchment area for the newly constructed Silent Valley Reservoir.

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