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Investigator Strait Coastal Waters Forecast

View the current warnings for South Australia

Forecast issued at 9:30 am CDT on Tuesday 21 October 2025.

Weather Situation

A low pressure system and an associated cold front will move over coastal waters today and Wednesday, reaching the Tasman Sea late on Wednesday. In the wake of this system, a high pressure system will move into the Bight on Thursday.

Forecast for Tuesday until midnight

Strong Wind Warning for Tuesday for Investigator Strait

Winds
East to northeasterly 15 to 20 knots turning north to northwesterly 15 to 25 knots in the evening. Winds reaching up to 30 knots in the late evening.
Seas
Around 1 metre.
Swell
West to southwesterly below 1 metre, increasing to 1 to 1.5 metres through the Backstairs Passage.
Weather
Cloudy. 95% chance of showers. A thunderstorm likely.

Wednesday 22 October

Gale Warning for Wednesday for Investigator Strait

Winds
West to northwesterly 20 to 30 knots turning southwesterly 15 to 25 knots during the morning and early afternoon then decreasing to 10 to 15 knots in the evening. Winds reaching up to 35 knots early in the morning.
Seas
2 to 3 metres, decreasing to 1 to 2 metres during the afternoon.
Swell
West to southwesterly below 1 metre, increasing to 1 to 2 metres during the morning, then decreasing to around 1 metre during the afternoon.
Weather
Cloudy. 50% chance of showers. The chance of a thunderstorm.

Thursday 23 October

Winds
Variable about 10 knots.
Seas
Below 1 metre.
Swell
West 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 3:30 pm CDT Tuesday.

Product IDS11070