In Dawlish, Devon, shortly before midnight, a high tide and strong winds caused the sea to flood the railway station’s tracks.
In Milford Haven, Pembrokeshire, some people were forced to evacuate from their properties after they were under up to 10ft (3m) of water.
Western Power Distribution, the distribution network operator for the Midlands, south Wales and the southwest of England, said it had 2,500 customers “off supply” on Friday evening.
The Met Office had two flood warnings and around 30 flood alerts in place across the UK on Saturday night.
The wet and windy weather is expected to continue across large parts of the country into Saturday morning.
Met Office meteorologist Alex Burkhill said: “It’s going to be a breezy day for most places with showers around for the South and West.”We could get spells of more regular showers pushing westwards during the day, reaching central parts in the afternoon.
“Those showers could be heavy with a bit of thunder mixed in and possibly some hail.
“The northeast of England and Scotland could stay dry.”
During the day, temperatures are expected to remain a few degrees above average for the time of year, although the unsettled weather will likely make it feel cooler.