Investigator Strait 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

Winds
Northwest to northeasterly 10 to 15 knots becoming variable about 10 knots in the middle of the day then becoming west to southwesterly 10 to 15 knots in the late evening.
Seas
Below 1 metre.
Swell
West to southwesterly around 1 metre.
Weather
Cloudy. 90% chance of showers. The chance of a thunderstorm from late this morning.

Tuesday 30 September

Winds
Westerly 15 to 25 knots.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the morning, then increasing to 1.5 to 2 metres around midday.
Swell
Westerly 1 to 1.5 metres, decreasing to around 1 metre during the morning, then increasing to 1 to 1.5 metres around midday.
Weather
Partly cloudy. 80% chance of showers. The chance of a thunderstorm.

Wednesday 1 October

Winds
Westerly 20 to 25 knots increasing to 20 to 30 knots during the day.
Seas
1.5 to 2 metres, increasing to 2 to 3 metres during the afternoon.
Swell
Westerly 1 to 1.5 metres, increasing to 1 to 2 metres during the morning.
Weather
Cloudy. 90% 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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