The Met Office has issued an amber weather warning.
It says there is a risk of coastal overtopping this afternoon.
The forecast:
An odd passing shower is possible this morning, before the cloud thickens and lowers with heavy rain arriving towards midday. Breezy with a fresh to strong south-westerly wind which will ease for a time this afternoon with highs of 8°C. A continuing risk of some coastal overtopping onto exposed coastal roads and promenades around the time of high tide this afternoon (1.45pm).
The rain will gradually clear this evening leaving the night dry with clear spells developing, as the wind turns to the west or southwest and strengthens once more. Lowest temperature near to 5°C.
Tomorrow will be dry and bright with sunny intervals. Temperatures reaching up to 8°C at best in the strong south-westerly wind.
Thursday will be windy and cloudy with outbreaks of rain, which will become heavy for a time during the afternoon. A strong to gale force south to south-easterly wind with top temperature around 9 or possibly 10°C at best. The rain will gradually clear during the evening as the wind turns to the west or southwest and eases overnight.