The Met Office put six weather warnings in place this weekend as parts of the UK have been hit by a month of rain.
The warnings mainly cover western areas from Scotland in the south to Plymouth.
Railway lines have been blocked and the heavy and persistent rainfall has triggered flood warnings.
Parts of the UK were hit by more than a month of rain in 26 hours.
There are six weather warnings from the Met Office this weekend, mainly covering western areas from Scotland in the south to Plymouth, as forecasters predict more wet conditions.
Chief meteorologist Marco Petagna said 127.6mm of rain fell in Llyn-y-Fan, Carmarthenshire, South Wales, between 6 a.m. on Friday and 8 a.m. on Saturday, and 115mm fell in Treherbert in Mid-Glamorgan.
Mr Petagna said the average rainfall for all of February in South Wales was 98mm.
“So you had more than a month of rain in 24 hours,” he said.
At Honister Pass in Cumbria, 112mm fell over the same period – the same amount as the February average for the region.
Further south at Princetown in Dartmoor, Devon, the fall was 72.2mm – about three-quarters of the 100mm February average.
There were 23 flood warnings in Natural Resources Wales on Saturday morning, recommending immediate action in the south of the country in addition to 41 flood warnings.
The Environment Agency had issued 11 flood warnings and 96 flood warnings across England, while the Scottish Environment Protection Agency had 35 flood warnings and 10 flood warnings.
The National Rail Inquiries website reported disruptions to the rail network in Wales and the south west of England due to flooding on Saturday morning.
The flooding of the railroad at Roche in Cornwall meant that the Great Western Railway’s trains could not run between Newquay and Par.
In Wales, flooded tracks between Abercynon and Merthyr Tydfil closed all lines.
Buses were expected to replace the trains between Pontypridd and Aberdare by the end of the day as the railroad between these stations was flooded.
The floods between Hereford in Herefordshire and Newport in Wales also led to an interruption in journeys on Saturday.
Natural Resources Wales urged anyone leaving home for an important weekend trip to be careful if they encounter floods.
Meanwhile, Gwent Police reported that the A4042 at the Llanellen Bridge in Monmouthshire was flooded and told drivers to avoid the area.
Mr Petagna said the recent wet conditions were “unusual” and warned of further rains.
Within a Met Office amber weather warning of heavy, persistent rain covering South Wales from 8 p.m. on Friday to 6 p.m. on Saturday, a total of up to 200mm can fall.
Mr Petagna said areas covered by the less stringent yellow warnings are expected to fall 30-70mm, with all warnings expected to end on Saturday evening.
But parts of Dartmoor could potentially fall as much as 150mm, he added.
Mr Petagna said that “hilly areas exposed to southerly winds” would receive the highest levels of rainfall.
He said the north and west of the country would experience a “quieter period” Sunday through Monday, but there would be more wet and windy weather in those regions on Tuesday and Wednesday, with some more weather warnings likely.