Bannau Brycheiniog (Brecon Beacons) cloud inversion forecast
The Usk valley fills with fog on calm mornings, seen from Pen y Fan, the Sugar Loaf and the Skirrid.
The broad Usk valley between Brecon, Crickhowell and Abergavenny collects cold air and river fog on still nights. The Sugar Loaf and Skirrid above Abergavenny are quick climbs out of it.
Pen y Fan, the highest point in southern Britain, looks north over Brecon and the Usk valley when cloud sits below the lid.
The forecast below is for the valleys around Brecon. Pick a viewpoint to see whether its summit is likely to be above the cloud.
Viewpoints to try
| Viewpoint | Height |
|---|---|
| Skirrid FawrShort, steep climb above Abergavenny | 486 m |
| Sugar LoafViews over the Usk valley and Abergavenny | 596 m |
| Pen y FanHighest point in southern Britain, above Brecon | 886 m |
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Other cloud inversion forecasts
- Lake DistrictDeep glacial valleys and big lakes make the Lake District one of the best places in Britain to look down on a sea of cloud.
- Peak DistrictThe Hope Valley is famous for filling with cloud on calm, cold mornings, watched from Mam Tor and Win Hill.
- Eryri (Snowdonia)Steep-sided valleys and lakes in Eryri trap cloud below the summits of Yr Wyddfa, the Glyderau and Moel Siabod.
- Scottish HighlandsFrom Ben Nevis to Loch Lomond and Perthshire, Highland glens and sea lochs fill with cloud under winter high pressure.
- Yorkshire DalesRibblesdale and the Three Peaks are a fine place to watch cloud fill the dales below limestone summits.