According to the Met Office showers will develop during the morning, these bringing a low risk of thunder.
The showers will then merge into longer spells of rain, which will likely become heavy and thundery.
It will be breezy with a fresh feel, especially along the south coas, the Met Office said.
The maximum temperature is expected to be 22°C.
Showers will ease into the evening.
It will remain breezy but with clear spells overnight, the Met Office said.
The minimum temperature tonight is expected to be 12°C.