Severe weather warnings have been issued for Saturday through to Tuesday as the Met Office warns of high tides, strong winds and heavy rain.
Yellow warnings for rain have been issued for between 6pm on Saturday and 5pm on Sunday and between 3pm Monday and 3pm Tuesday.
On all four days homeowners are warned that flooding of homes and businesses is possible.
Motorists are warned that water spray and flooding on roads will make journey times longer, while bus and train services could be hit with long delays.
And on Saturday and Sunday, we could see power cuts and interruptions to other services.
The severe weather warnings for Saturday and Sunday stretch from Devon and Cornwall all the way up to Swansea Cardiff and then north to Manchester, Leeds, Sheffield and Liverpool.
Since first being issues this morning it was extended southwards to cover parts of Staffordshire as well as parts of South West England, it has also extended northwards across the eastern side of the Pennines.
Meanwhile Monday and Tuesday's weather warning covers almost the entire south of Wales.
Tides will be among the highest we've seen in 2019. While gale-force winds of up to 45mph are expected.
Met Office forecaster Greg Dewhurst warned the wet weather could be around until the middle of next month.
“Some places in Scotland will get 40mm of rain," he said. “There could be 20mm in northern England and Wales.
“Since midnight we’ve had rainfall up to 15mm across north-west England and Wales.
“A band of rain is pushing east across the UK - that band will clear during the early hours of this morning, although it may linger in some eastern parts.
“It’s also going to be breezy, with the strongest gale-force gusts in Shetland and Orkney reaching 45 miles-per-hour.
“We could be facing rain for the next three weeks. There are signs it may become a bit drier and brighter towards the second week of October."
The wet weather comes after Britain got a thorough soaking on Tuesday with nearly a month’s rain in a few hours as the remnants of Hurricane Humberto swept in.
There are 27 flood alerts in place across the UK meaning flooding is possible and residents should be prepared.
They are:
Coastal areas of Pevensey seafront
Coast at North Morecambe Bay
Humber estuary from Spurn Point to Winestead Outfall
Lower Avon and tributaries
Lower River Eden
Mersey Estuary at Warrington
Middle River Eden
North Cornwall Coast from Chapel Porth to The Rumps excluding the tidal River Camel
North Cornwall Coast from Lands End to Chapel Porth
North Cornwall Coast from The Rumps to Hartland Point excluding Bude
River Alt
River Cole
River Lostock and River Yarrow
River Severn in Shropshire
Rivers Kent and Bela
River Trent in Derbyshire
Severn Vyrnwy Confluence
Somerset coast at Porlock Weir
South Cornwall Coast from Gribbin Head to Rame Head
South Cornwall Coast from Lands End to Lizard Point
South Cornwall Coast from Lizard Point to Gribbin Head excluding Truro City
South Cornwall Coast from Rame Head to Plymouth including tidal estuaries
Tidal River Avon at Bristol, Pill and Shirehampton
Tidal River Camel excluding Wadebridge and Chapel Amble
Upper River Derwent, Stonethwaite Beck and Derwent Water
Upper River Eden
Wye Estuary in Gloucestershire
