Flooding is possible over all high tides from this afternoon, Saturday 14 Nov to Monday 15 Nov early evening tide.
Force 7 south westerly winds and offshore wave heights exceeding 3m are forecast to coincide high spring tides of 2020.
This may cause spray and wave overtopping, and minor flooding of quaysides and low-lying land in certain locations.
High tides at Bude are Saturday at 16:42, and on Sunday at 05:07 and 17:28.
These times vary for other locations along the coast.
Locations which may be affected include Port Quinn, Port Isaac, Port Gaverne, Flexbury, Widemouth Bay, Trebarwith Strand and Boscastle.
People are advised to stay away from risk areas and take care next to the coast.
During Sunday, Force 8 west north westerly winds, and 6.5m offshore waves are forecast. Tides peak on Sunday evening. Flood warnings may be issued.