Forecasters said the wettest part of the country was Spadeadam in Cumbria which recorded 71.4mm of rainfall on Saturday - nearly the region's entire monthly average of 82.4mm for August.
A yellow warning for heavy rain, bringing the risk of further travel disruption and flooding, is still in place for southern Scotland and the far north of England.
Meteorologist Helen Roberts said: "It does look like remaining unsettled and changeable right through most of the next seven days."
Meanwhile, ferry passengers face another day of delays after adverse weather conditions meant some ships were stranded outside Dover for hours, waiting to dock.
Tug boats had to battle against strong winds on Saturday to pull ferries into the Kent port, with some waiting for more than three hours.
There will be more delays until weather conditions settle, ferry operators said.
P&O Ferries said on Twitter: "Due to adverse weather conditions - we are now offering a turn up and go service to all passengers until weather improves. We will accommodate you on the first available sailing once you reach check-in. Wait time between check-in and sailing is currently approx. 4-5hrs."
Stephen Deadman, from Nottingham, said: "We should have arrived in Dover 11.15am local time but we got off the boat at 4pm.
"[It was] a quick journey across Channel but we stopped four miles from Dover."
He said there had been five boats waiting but that passengers were kept informed and the seas were not rough.
There were problems with travel in other parts of the UK thanks to the weather through the day.
On Saturday, the West Coast Main Line was closed between Scotland and England because of flooding on the tracks.
Network Rail Scotland said five trains were trapped or blocked between Lockerbie and Penrith North - and in places, water levels were a foot above the rails.
In a series of tweets, the organisation said the flooding was caused by water from an adjacent field running on to tracks.
Water levels eventually dropped to a safe level at about 6pm meaning trains could run again at full speed.
There was also flooding between Blackburn and Clitheroe, causing blockages to the lines on Saturday evening.
Mumbles Head, between Gower and Swansea getting the strongest winds at 61mph, followed by Pembrey Sands in Carmarthenshire at 56mph.