Flood warnings have been issued for overnight and tomorrow morning as heavy rain coincides with seasonal high tides.
Residents in Swanage and Corfe Castle are being warned that 25mm of rain is likely to fall between 7pm and 1am, causing streams and rivers to burst their banks.
And businesses around Poole Harbour are braced for a second day of flooding at high tide tomorrow lunchtime.
Flooding at the "spring" high tide this morning left Rockley Sands underwater, stopped the Sandbanks Chain Ferry from running and left workers at Sydenhams in Poole sailing through their warehouse.
The beach and cafe at Rockley Sands were under water and completely inaccessible at 11am.
Reader Mark Gilmore sent us this picture of the Sunseeker dock underwater at Poole.
On Bournemouth beach, the council built a sand bank around the new beach wedding hut to stop it being damaged by the water.
The Sandbanks ferry was cancelled due to the high tide:
And Gary Willingham sent us this picture looking out over the watersports lake.
Do you have any pictures of flooding this morning? Email firstname.lastname@example.org
Harbour Master Brian Murphy said: “There's a high tide. Combined with the effect of the wind, you are potentially going to get some flooding of the coastline and areas around the harbour.
“We get it now and again and this week we've had a few alerts. We've got some water lying over one of the quays, but it's caused no problems at all in the port.”
He explained that tides were often higher and lower than usual around the time of the equinoxes when the moon's gravity has its greatest effect.
Mr Murphy warned people going out on the water to be careful. “There has been a lot more water in the harbour so the ebb tide gets stronger,” he said.
A spokesperson for the Borough of Poole said the only report it had received of flooding this morning had been caused by an outfall in Hazelbury Road, Creekmoor.