16/06/2026 – Weather in Cornwall

Cornwall weather: warm, humid and wet by turns this week

The next few days look like a proper mixed bag, with warm sunshine and patchy rain trading places almost by the hour. If you have plans pinned to dry weather, keep one eye on the sky.

Today

Early low cloud, mist and fog should lift to give some bright spells. After that, more low cloud spreads in from the west, bringing mist, fog patches and some patchy rain with it. It will feel quite warm and humid, with a top temperature of around 20°C.

Tonight

Cloudy and murky, with mist and fog patches forming. Some patchy rain is expected, turning locally heavier and more persistent later on. It stays warm and humid overnight, with temperatures holding up around 14°C.

Wednesday

A cloudy, murky start with outbreaks of rain, heavy in places for a time. The afternoon turns mostly dry, and there is a chance of a few brighter breaks coming through. Highs of about 19°C.

The rest of the week

Thursday through to Saturday stays unsettled. Areas of cloud will bring rain at times, though it will feel warm whenever the brighter breaks show up. So if you were hoping the weekend would settle down, the forecast is not ready to promise that yet.