The weather forecast from the Met Office:

A rather cloudy start with some mist and hill fog but generally dry and becoming bright with sunny intervals developing. The light west to northwest wind will freshen slightly, and temperatures rising to 18 or 19°C this afternoon.

Becoming rather cloudy and misty again overnight, then dry tomorrow with some sunshine developing into the afternoon, light and variable breezes and top temperature around 20°C.

Fine on Tuesday and Wednesday with sunny spells and light breezes, slightly warmer as well - temperatures reaching 21 or 22°C at best away from windward coasts.