Welcome to the Mountain Weather Information Service

MWIS currently produce forecasts for 8 different mountain areas of the UK as an aid to mountain safety.

Forecasts are produced manually using information from a range of forecast models and forecasters knowledge of mountain weather. New forecasts, for the next three days are produced by 4:30pm daily, normally earlier in the winter, and amended as necessary.

The production of the Scottish forecasts is fully funded by the Scottish Government through sportscotland with the support of The Mountaineering Council of Scotland.

As always, please continue to give us feedback about what you think of our website, service and future development plans.


We are trialling forecast videos concentrating on the outlook period. As with our forecasts, please give us feedback. It all helps to improve what we provide.

The forecasts are continuing to indicate unseasonably cold conditions across British and Irish mountains. It may well still be school summer holidays for many, but do be aware of the possibility of hypothermia.

Observations from mountain summits:

Wednesday 20th August - 12:00 BST
Cairngorm 2.0C 35mph WNW Gusts 46mph
Aonach Mor 3.0C 8mph W
Cairnwell 4.9C 21mph NW Gusts 48mph
Great Dun Fell (N. Pennines) 6.1C 16mph W
Bealach na ba (Wester Ross) 4.9C 21mph WNW

In association with
Mountaineering Council of Scotland sportscotland Association of Mountaineering Instructions