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Welcome to the Mountain Weather Information Service

The Mountain Weather Information Service is pleased to announce the inclusion of forecasts for the mountains of south Wales. This is a long delayed addition to our service. As with other regions of England and Wales, although the focus will be on the Brecon Beacons and Black Mountains National Park, we will include all higher summits in the southern half of Wales.

Our aim is to provide forecasts so as to aid mountain safety. Forecasts are very much written in the form of warnings; generally when there is little text, the conditions are fairly benign. Were possible we use wording that indicates the impact of the weather on the user, and particularly when there is the possibility of severe conditions, we try to include this eventuality in the forecast as a probability, even when the risk is low.

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.

Although only twice weekly, we are now providing videos, focussing on the conditions up to about a week ahead, for planning purposes.

The production of the Scottish forecasts is fully funded by the Scottish Government through sportscotland.

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

Observations from mountain summits

Sunday 28th August 07:00 BST
Cairngorm (1245m)  6.4C S      2mph
Aonach Mor (1130m)  8.0C E      5mph
Cairnwell (933m)  8.2C ESE 8mph
Great Dun Fell (N. Pennines) (847m)  9.0C E    15mph
Bealach na ba (Wester Ross) (773m)  9.2C NE   3mph

Planning video, updated Thursday evening 25th August



Advertise with MWIS

We are looking for sponsors for the Southeastern Highlands, Southern Uplands and Snowdonia forecast pages.

MWIS is part-funded by the Scottish Government, but the IT and website, as well as the English and Welsh forecasts, are paid for by advertising from the mountain-user community. We get thousands of hits every month from mountain users, and we currently have advertising opportunities for the Southeastern Highlands, Southern Uplands and Snowdonia forecast pages.

To find out more about advertising with us, please get in touch with felicity [at] mwis.org.uk.


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