Spencer Gulf Coastal Waters Forecast

View the current warnings for South Australia

Forecast issued at 9:30 am CDT on Monday 8 December 2025.

Weather Situation

A broad ridge extends over inland parts of the state while a weak cold front clips the southeast late Monday. From Tuesday another high pressure system develops south of the Bight, strengthening the ridge over the state ahead of a trough of low pressure developing across the far northwest late Tuesday persisting late into the week.

Forecast for Monday until midnight

Winds
North to northwesterly 10 to 15 knots becoming variable about 10 knots in the middle of the day then becoming southeast to southwesterly 10 to 15 knots in the early afternoon. Winds reaching up to 20 knots north of Cowell to Wallaroo in the evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres north of Cowell to Wallaroo by early evening.
Swell
South to southwesterly around 1 metre south of Cowell to Wallaroo.
Weather
Sunny.

Tuesday 9 December

Winds
Southerly 10 to 15 knots turning southeasterly 15 to 20 knots during the day. Winds reaching up to 25 knots north of Cowell to Wallaroo in the evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
Swell
South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo during the afternoon.
Weather
Cloud clearing.

Wednesday 10 December

Winds
Southeasterly 15 to 20 knots.
Seas
1 to 1.5 metres.
Swell
South to southwesterly around 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.
Weather
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 3:30 pm CDT Monday.

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