Investigator Strait Coastal Waters Forecast

View the current warnings for South Australia

Forecast issued at 3:30 pm CST on Tuesday 29 September 2026.

Weather Situation

A series of slow moving troughs will move over the west of SA on Tuesday then will across remaining parts of the state on Wednesday and Thursday as a couple of cold fronts move across waters to the south. A high pressure system will become established south of the Bight during Friday and persist there on Saturday. A trough will extend from WA over the far west of SA over the weekend.

Forecast for Tuesday until midnight

Winds
North to northwesterly 15 to 20 knots turning west to southwesterly 10 to 15 knots in the late afternoon then becoming variable below 10 knots in the evening.
Seas
1 to 1.5 metres, decreasing to 1 metre by early evening.
Swell
West to southwesterly below 1 metre.
Weather
Cloudy.

Wednesday 30 September

Winds
Variable about 10 knots.
Seas
Below 1 metre.
Swell
West to southwesterly around 1 metre.
Weather
Partly cloudy. 90% chance of showers. The chance of a thunderstorm in the evening.

Thursday 1 October

Winds
Variable below 10 knots becoming west to southwesterly 10 to 15 knots in the middle of the day then tending south to southwesterly in the late afternoon.
Seas
Below 1 metre.
Swell
West to southwesterly around 1 metre, increasing to 1 to 1.5 metres by early evening.
Weather
Cloudy. 90% chance of showers. The chance of a thunderstorm in the early morning.

Friday 2 October

Winds
South to southwesterly 10 to 15 knots tending south to southeasterly during the day.
Seas
Around 1 metre.
Swell
West to southwesterly 1 to 1.5 metres.
Weather
Partly cloudy. 50% 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 9:30 pm CST Tuesday.

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