Gulf St Vincent Coastal Waters Forecast

View the current warnings for South Australia

Forecast issued at 3:40 am CDT on Friday 5 December 2025.

Weather Situation

A low pressure trough will linger over the northeast and far north today as a ridge of high pressure builds over the south. The trough will clear to the northeast of SA late Saturday. A weak cold front will move across the southern coastal districts on Saturday as the high centre becomes established over the western Bight. The high will move slowly eastwards on Sunday and early next week.

Forecast for Friday until midnight

Winds
South to southeasterly 10 to 15 knots becoming variable about 10 knots in the early morning then becoming southerly 15 to 20 knots in the early afternoon.
Seas
Below 1 metre, decreasing below 0.5 metres during the morning, then increasing to around 1 metre during the afternoon.
Swell
West to southwesterly below 0.5 metres.
Weather
Partly cloudy.

Saturday 6 December

Winds
Variable about 10 knots becoming southwesterly 15 to 20 knots in the early morning then tending southerly in the evening. Winds reaching up to 25 knots north of Port Vincent to Brighton during the afternoon and evening.
Seas
Below 1 metre, increasing to 1 to 2 metres around midday.
Swell
South to southwesterly below 0.5 metres.
Weather
Partly cloudy. The chance of a thunderstorm north of Port Vincent to Brighton in the morning and early afternoon.

Sunday 7 December

Winds
Southerly 15 to 20 knots becoming variable about 10 knots during the morning then becoming south to southwesterly 10 to 15 knots during the afternoon.
Seas
1 to 1.5 metres, decreasing below 1 metre during the morning.
Swell
South to southwesterly below 1 metre.
Weather
Partly cloudy.

Please be awareWind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height.

Nearby Coastal Waters

WA - Eucla Coast - Coastal Waters Forecast Vic - West Coast - Coastal Waters Forecast SA - Lower South East Coast - Coastal Waters Forecast SA - Upper South East Coast - Coastal Waters Forecast SA - Adelaide Metropolitan Waters Forecast SA - Gulf St Vincent - Coastal Waters Forecast SA - Spencer Gulf - Coastal Waters Forecast SA - Investigator Strait - Coastal Waters Forecast SA - South Central Coast - Coastal Waters Forecast SA - Central Coast - Coastal Waters Forecast SA - Lower West Coast - Coastal Waters Forecast SA - Upper West Coast - Coastal Waters Forecast SA - Far West Coast - Coastal Waters Forecast

The next routine forecast will be issued at 9:30 am CDT Friday.

Product IDS11069