A yellow weather warning has come into force as heavy rain and strong winds are forecast which may cause flooding and travel disruption, the Met Office said.
The warning for rain is in place from midnight until 2pm on Wednesday for south-west England and much of South Wales. There's no warning in place covering Greater Manchester, but the chance of heavy rain throughout Wednesday is said by the Met Office to be high.
"Unsettled conditions are set to continue across the UK this week, with a spell of heavy rain and strong winds impacting southern areas through today and into Wednesday," forecasters said.
"Rain will move eastwards across southern counties of England and Wales, bringing blustery conditions and heavy downpours in places. Elsewhere, a mix of sunny spells and scattered showers