Mountain weather

Mourne Mountains

There may be weather warnings in force for the UK

Mourne Mountains Mountain weather forecast table

Confidence

High for one more settled day today then turning cloudier and showery on Sunday and into next week.

Sunrise:
Sunset:
Mountain hazards

Mountain weather hazards

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

hazard 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

Dry. Mist and low cloud gradually dispersing to leave plenty of sunshine.

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

Meteorologist's view

Valley temperatures will reach 23 Celsius towards western side of the Mourne mountains. Be prepared for sunburn and dehydration issues.

Weather

Dry with early mist and low cloud soon dispersing to leave plenty of sunshine. Clouds returning during the evening with small risk of a shower after dark.

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

50% at first then 95% by late morning. Patches of cloud around 400 to 500m at first soon lifting and dispersing.

Visibility

Patches of poor visibility at first then good.

Sunrise:
Sunset:

Mountain weather information

Weather

A cloudier day on Sunday but still a lot of dry weather with a little sunshine breaking through. Patches of thicker cloud will bring a few showers, especially later in the day.

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

40% improving 80%. Fairly extensive cloud cover around 500 to 600m lifting and breaking a little during the morning. Much of the cloud in afternoon will be above the tops.

Maximum wind speed expected

Easterly winds on the tops with average speeds of 10 to 15mph.

Temperature

  • At 700m Plus 12 Celsius.
  • Valley 11 Celsius at dawn rising to 17 Celsius by early afternoon.
  • Freezing level Well above the tops.

Visibility

Rather hazy for a time in the morning beneath the cloud cover, then good visibility.

Mountain weather information

Monday 17 August

Sunrise:
Sunset:

Cloudy start with outbreaks of rain. It will become drier and brighter later in the morning with just a few afternoon showers. Light winds at all levels.

Tuesday 18 August

Sunrise:
Sunset:

Bright or sunny interludes and scattered showers. A few heavier showers are likely in the afternoon. Light winds.

Wednesday 19 August

Sunrise:
Sunset:

Rather cloudy but mainly dry during the day with just the odd light shower. More persistent and heavier rain will edge up from the south later in the day. Freshening southeasterly winds on the tops.

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