Lower South East Coastal Waters Forecast: Cape Jaffa to SA-Vic Border

View the current warnings for South Australia

Forecast issued at 9:30 pm CST on Saturday 22 August 2026.

Weather Situation

A high pressure system over SA continues to drift eastwards to be centred over the eastern states by Sunday. A low pressure system and associated trough move into the far west later Sunday and then moves across the state on Monday and out over the eastern states by later Tuesday. Another high moves into the west later Tuesday and over SA on Wednesday.

Forecast for Saturday until midnight

Winds
West to northwesterly below 10 knots.
Seas
Below 0.5 metres.
Swell
Southwesterly 4 metres.
Weather
Cloudy.

Sunday 23 August

Winds
West to northwesterly about 10 knots tending north to northwesterly 10 to 15 knots before dawn. Winds reaching up to 20 knots south of Beachport in the late morning and early afternoon.
Seas
Around 1 metre, increasing to 1 to 1.5 metres south of Beachport around midday.
Swell
Southwesterly 3 to 4 metres, decreasing to 3 metres by early evening.
Weather
Cloudy.

Monday 24 August

Winds
Northerly 10 to 15 knots becoming variable about 10 knots in the evening.
Seas
Below 1 metre.
Swell
Southwesterly 2.5 to 3 metres.
Weather
Cloudy. 90% chance of showers.

Tuesday 25 August

Winds
Southeasterly 10 to 15 knots turning south to southwesterly 15 to 20 knots during the morning.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
Swell
Southwesterly 2.5 to 3 metres.
Weather
Partly cloudy. 80% 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 3:40 am CST Sunday.

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