Investigator Strait Coastal Waters Forecast

No warnings for South Australia

Forecast issued at 3:30 pm CDT on Wednesday 12 November 2025.

Weather Situation

A high pressure system over NSW extends a ridge over coastal waters. A broad low pressure trough is expected to form in the west on Thursday and track eastwards across the Bight on Friday before clearing to the east by Saturday. Following the trough, a series of cold fronts will pass across the southeast over the weekend.

Forecast for Wednesday until midnight

Winds
Variable about 10 knots.
Seas
Below 1 metre.
Swell
West to southwesterly below 1 metre, increasing to 1 to 1.5 metres through the Backstairs Passage.
Weather
Clear.

Thursday 13 November

Winds
Variable below 10 knots becoming northeasterly 10 to 15 knots in the middle of the day then tending northeast to southeasterly in the late afternoon.
Seas
Below 1 metre.
Swell
West to southwesterly below 1 metre, increasing to 1 to 1.5 metres through the Backstairs Passage.
Weather
Cloudy. 60% chance of showers.

Friday 14 November

Winds
Southeasterly 15 to 20 knots tending easterly in the early morning then shifting southwesterly 10 to 15 knots in the early afternoon.
Seas
Around 1 metre.
Swell
West to southwesterly below 1 metre, increasing to 1 to 1.5 metres through the Backstairs Passage.
Weather
Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Saturday 15 November

Winds
Southwesterly 10 to 15 knots tending westerly 15 to 20 knots during the morning.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the afternoon or evening.
Swell
Southerly 1 to 1.5 metres through the Backstairs Passage.
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 9:30 pm CDT Wednesday.

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