Forecasters are predicting a spell of wet weather in the lead up to Christmas with three weather warnings already in place this week.
The Met Office has issued heavy rain weather warnings for North Devon on Wednesday, Thursday and Saturday.
Up to 40mm of rain is expected to fall across the region today prompting forecasters to issue both yellow-graded and amber-graded weather warnings for the majority of the day.
Most of North Devon is currently on a yellow-graded weather warning, the lowest kind issued by the Met Office, although parts of West Devon and North Cornwall are on a more-severe amber-graded warning.
A chief forecaster at the Exeter-based agency said: “An active frontal system will move eastwards across the UK during Wednesday, bringing a period of heavy rain to southwestern parts of England during the morning.
“Rainfall totals of 10-20mm are expected fairly widely with as much as 30-40mm over southern parts of Devon and Cornwall.
“The rain will ease for a time before a wave develops on the front bringing the risk of a further period of heavy rain during the evening.
"With saturated ground and following the rain of Wednesday morning, a further 20-40mm of rain is likely to run off leading to an increased risk of flooding across Cornwall and Devon."
More rain is predicted for Thursday, with forecasters warning of “heavy and prolonged showers” until 6pm.
A Met Office forecaster said rainfall totals of 15-25mm are expected fairly widely across Devon and Cornwall on Thursday, but as much as 40mm could fall in places. It is expected to fall mostly within a six hour period.
Another weather warning is in place on Saturday, with a further 20-30mm of rain expected to fall across the county.
Forecasters are warning members of the public to remain alert, as heavy rain falling on already saturated ground could cause localised flooding in places.
There may also be disruption to roads across the region and to services on the rail network due to excess surface water.