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Mourne Mountains - Mountain weather forecast

Weather warnings

Warnings affecting Mourne Mountains over the next 5 days

Confidence

High for rather cold and often showery conditions for the next few days.

  • This evening
  • Thursday
  • Friday
  • Further outlook

Wednesday 25 April 2018

Sunset: 20:44
Moon phase: First quarter

Cold and windy with a chance of showers.

Thursday 26 April 2018

Weather hazards

Gales High likelihood Hide 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

Strong sunlight Medium likelihood Show detail

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.

Learn more about strong sunlight

Severe chill effect Low likelihood Show detail

Wind significantly lowers the ‘feels-like’ temperature relative to the actual temperature, with even moderate winds significantly adding to the chilling effect. Strong winds can result in a severe and debilitating wind chill many degrees below the actual temperature. This effect will be enhanced in rain or wet snow. Without protection, prolonged exposure could result in frost nip or frostbite on exposed parts of the body and/or hypothermia.

Learn more about severe chill effect

Poor visibility Low likelihood Show 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

Thunderstorms Low likelihood Show detail

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.

Learn more about thunderstorms

Headline

Bright with a few showers, wintry on the tops.

Weather

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather at 700m Partly cloudy night Clear night Sunny intervals Light shower day Sleet shower day Sleet shower day Cloudy Cloudy
Chance of precipitation at 700m 20% 20% 20% 30% 40% 30% 20% 20%

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 36 47 W 39 51 W 40 53 W 35 48 W 31 42 W 28 39 W 19 26 W 16 22
300m W 20 32 W 21 35 W 22 36 W 23 37 W 20 33 W 18 30 W 13 21 NW 9 15
Valley W 16 30 W 17 32 W 17 33 W 18 34 W 17 32 W 15 29 W 10 19 NW 7 13

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 ° 1 ° 3 ° 5 ° 5 ° 4 ° 3 °
300m 4 ° 3 ° 4 ° 6 ° 8 ° 9 ° 7 ° 5 °
Valley 5 ° 5 ° 5 ° 8 ° 10 ° 10 ° 8 ° 6 °

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 -6 ° -7 ° -8 ° -5 ° -2 ° -1 ° -1 ° -2 °
300m -1 ° -2 ° -2 ° 1 ° 4 ° 5 ° 4 ° 1 °
Valley 1 ° 0 ° 0 ° 3 ° 6 ° 7 ° 6 ° 3 °

Freezing level

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Freezing level i 900 m 800 m 800 m 900 m 900 m 900 m 900 m 800 m
Sunrise: 05:58
Sunset: 20:46
Moon phase: Waxing gibbous

Weather

Some clear or sunny periods along with scattered showers, these most frequent in the morning and early afternoon with a risk of hail and thunder. Some wet snow can be expected on the highes summits. Showers easing from mid-afternoon onwards.

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

90%, although some patches down to 700 metres in any heavier showers, as well as around dawn. Most summits free of cloud.

Visibility

Very good with good air clarity. Poor in any snow.

Meteorologist's view

Be prepared for cold winds at all elevations, and some brief periods of snow on the higher tops. Winds gusting 60 mph on the higher tops in the morning with severe wind chill expected.

Friday 27 April 2018

Sunrise: 05:56
Sunset: 20:48
Moon phase: Waxing gibbous

Weather

Cold and cloudy with the chance of showers, perhaps some persistent rain for a time. Drier later.

Maximum wind speed expected

Northeast 20 mph

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

30%, cloud likely to be extensive around 600 metres although low confidence in this aspect.

Temperature

  • At 700m Plus 3 Celsius
  • Valley Plus 5 rising to 9 Celsius
  • Freezing level Above summit level

Visibility

Rather hazy, especially in any rain.

Saturday 28 April 2018

Sunrise: 05:54
Sunset: 20:50
Moon phase: Waxing gibbous

Cold and bright with the chance of a few mostly light showers. Light winds.

Sunday 29 April 2018

Sunrise: 05:52
Sunset: 20:52
Moon phase: Full

Dry start, some heavy showers likely to break out in the afternoon. Some wet snow possible at height.

Monday 30 April 2018

Sunrise: 05:50
Sunset: 20:54
Moon phase: Full

Staying cold with afternoon wintry showers.

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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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