The Met Office has issued a yellow weather warning for strong wind with gusts up to 70 mph which has been extended to the south-east of England.
On Wednesday evening in the south-east there is a chance of “heavy outbreaks of rain and thunder” the Met Office said.
Coastal areas such as Devon and Cornwall are likely to be worst affected and forecasters have warned there could be power outages with disruption to roads and ferries.
Met Office spokesman Stephen Dixon said, “There’s likely to be some warning updates from us of winds with some associated rain throughout the day with gusts up to 60-70mph this morning and some heavy rains accompanying.
“Coastal areas, particularly Devon and Cornwall, are likely to see the worst of this with potential short-term losses of power and disruption to travel.
“This is a low-pressure system that is building in from the west and is set to get worse throughout the course of the day.”