Mountain weather

Mourne Mountains

There may be weather warnings in force for the UK

Mourne Mountains Mountain weather forecast table

Confidence

High for Friday. High for changeable conditions to continue into next week but low for detail on Monday.

This evening forecast

Sunrise:
Sunset:

Occasional showers, wintry on the tops.

Sunrise:
Sunset:
Mountain hazards

Mountain weather hazards

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

hazard Gales
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.
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.

hazard Storm force winds
Storm force winds (gusts over 70mph) make walking very strenuous with any mobility virtually impossible over exposed ground. Where these conditions occur there is a high risk of being blown over and even standing may be impossible at times with a risk of being blown off one’s feet. Basic tasks such as using a map, eating, putting on extra clothing or communication become extremely difficult away from any shelter.

hazard Severe chill effect
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.

Mountain weather forecast

Windy with rain at times.

Wind direction and speed (mph)
Altitude above mean sea level
Wind gust (mph)
Altitude above mean sea level

Altitude above mean sea level

Altitude above mean sea level

Additional weather information

Weather

An overcast day and very windy day with extensive low cloud. Some light rain or drizzle is expected through the day too, this mainly across western facing slopes. Drier and clearer weather will spread from the northwest through the evening with the odd shower.

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

Nil during daylight hours with extensive low cloud between 500 and 700 metres. Low cloud breaking in the evening.

Visibility

Poor in any rain especially western facing slopes, otherwise often good.

Meteorologist's view

Strong winds at all elevations will make for slow progress, as well as notable wind chill. Gusts to 75 mph possible on the very highest tops.

Sunrise:
Sunset:

Mountain weather information

Weather

Cold and very windy with occasional snow showers, but some reasonable spells of drier and brighter weather. Snow showers easing in the evening.

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

80%. Cloud briefly lowering to 600 metres as snow showers run by

Maximum wind speed expected

Gusty westerly winds of 50 to 60 mph on the summits

Temperature

  • At 700m Minus 1 Celsius
  • Valley Zero rising to 7 Celsius
  • Freezing level 600 metres

Visibility

Outside of showers very good visibility, but dropping quickly in snow.

Mountain weather information

Sunday 23 February

Sunrise:
Sunset:

Mainly dry with some brightness, light winds. Freezing level 700 metres

Monday 24 February

Sunrise:
Sunset:

Very windy with early rain, then occasional snow showers. Freezing level rising above summits, falling back to 600 metres

Tuesday 25 February

Sunrise:
Sunset:

Cold and windy with wintry showers, freezing level 600 metres.

Updated at:

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.v

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