03/07/2026 – Weather in Cornwall

Cornwall weather: warm spell to build through the weekend

Any grey start to Friday in Cornwall should not last long. Forecasters expect the morning mist and fog to clear and give way to warm sunshine, and it marks the beginning of a spell that only gets warmer as the days go on.

What to expect today

Once any shallow mist or fog patches lift, plenty of sunshine is forecast through the day. Some fair weather cloud may bubble up in the light winds, but it should feel warmer for many, especially in the sun. The maximum temperature is expected to reach 25°C.

Rain overnight before a bright Saturday

The picture turns cloudier from the west overnight, which could bring some spots of rain at times. Winds stay light and it stays mild, with the temperature dropping no lower than about 10°C for many.

Saturday opens cloudy. That cloud lifts and breaks through the morning to leave plenty of bright and sunny spells, with light winds and a warm feel. The maximum temperature is around 24°C.

Settled and very warm into next week

High pressure continues to build through the weekend, and conditions become increasingly settled. From Sunday into Tuesday the temperatures climb day by day, feeling very warm in the sunshine.