Spencer Gulf Coastal Waters Forecast

View the current warnings for South Australia

Forecast issued at 5:10 am CST on Monday 29 September 2025.

Weather Situation

A high pressure system lies over SA and will move to the southeast on Monday ahead of a cold front. A new ridge of high pressure begins to develop from Tuesday across the west while a second cold front moves up over the southeast on Wednesday.

Forecast for Monday until midnight

Strong Wind Warning for Monday for Spencer Gulf

Winds
North to northeasterly 15 to 20 knots shifting south to southwesterly in the late morning and afternoon. Winds reaching up to 30 knots north of Cowell to Wallaroo in the evening.
Seas
1 to 1.5 metres, decreasing below 1 metre around midday, then increasing to 1 to 2 metres by early evening.
Swell
South to southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
Weather
Cloudy. 80% chance of showers south of Cowell to Wallaroo, 50% chance elsewhere. The chance of a thunderstorm from late this morning.

Tuesday 30 September

Winds
Westerly 15 to 20 knots, reaching up to 25 knots south of Port Neill to Port Victoria during the afternoon and evening.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres south of Port Neill to Port Victoria around midday.
Swell
South to southwesterly around 1 metre.
Weather
Partly cloudy. 60% chance of showers.

Wednesday 1 October

Winds
Westerly 15 to 25 knots increasing to 20 to 30 knots during the afternoon.
Seas
1.5 to 2.5 metres.
Swell
South to southwesterly around 1 metre.
Weather
Partly cloudy. 70% chance of showers.

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 3:50 pm CST Monday.

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