Cornwall is facing a further five days of extreme weather.
The Met Office has issued weather warnings for every day until Saturday.
The yellow “be prepared” weather warnings are for extremely high wind today and tomorrow and very heavy rain on Thursday, Friday and Saturday.
Winds tonight and tomorrow are expected to be up to 80mph.
A Met Office spokesman said: “Gales accompanied by heavy rain will ease during the early hours (of Wednesday) but in southern and western areas of England and Wales, renewed severe gales are expected to arrive during Wednesday daytime.
“The focus will be around the middle of the day and early afternoon, with the potential for gusts to around 70 mph in some coastal areas, possibly 80 mph in the most exposed sites in southwest England and south Wales.”
The Met Office said the latest forecast for the end of the week was “not good news”.
The spokesman said: “Computer models have moved into much better agreement now for this weather system but unfortunately the most likely outcome is not good news.
“This means that there is now increased confidence in a period of persistent rain, which may bring a fairly widespread 15 to 25 mm to the areas covered by the warning, possibly around 30 mm in some southern counties.
“This rain, falling so soon after the previous batch seems likely to exacerbate problems with flooding, especially as further heavy rain seems very likely early on Saturday.
The extreme weather has prompted the cancellation of Truro Farmers Market which usually takes place on Wednesday afternoon.
A flood warning is now in place for the south coast of Cornwall for high tide tonight and tomorrow morning.
A spokesman for the Environment Agency said: "Overtopping of defences and quaysides is expected. The recent storms have caused damage at coastal locations.
"There may be an increased risk at Lamorna, Penzance, Porthleven, Mullion, Pentewan, Seaton, Kingsand, Stonehouse and Plympton.
"Coastal areas will be extremely dangerous, the public are advised to avoid these areas."
The severe depression in the Atlantic that is causing the bad weather has drummed up massive swells that are due to hit the Cornish coast.
The surf forecast website www.stormsurf.com said Cornwall will see the biggest waves in the world tomorrow with waves of up to 38ft.
But the biggest waves are expected to come in on Saturday. Surf website www.magicseaweed.com said waves of up to 42ft could slam into Sennen in the far west of Cornwall.
Relatively sheltered areas such as Falmouth could also be hit by waves of almost 30ft - the height of an average house.