Upper South East Coastal Waters Forecast: Murray Mouth to Cape Jaffa

View the current warnings for South Australia

Forecast issued at 3:40 am CST on Sunday 12 April 2026.

Weather Situation

A high pressure system south of WA extends a ridge over South Australia. This high moves slowly east to be south of the Bight by tonight. The high is forecast to hover over SA tomorrow, then weaken and step back to the west on Tuesday allowing a series of fronts to pass over the southeast on Wednesday and Thursday.

Forecast for Sunday until midnight

Winds
Southwesterly 15 to 25 knots decreasing to 10 to 15 knots in the evening.
Seas
2 metres, decreasing to 1 to 1.5 metres during the morning.
Swell
Southwesterly 4 to 5 metres.
Weather
Cloudy.

Monday 13 April

Winds
Southwesterly 10 to 15 knots decreasing to about 10 knots before dawn.
Seas
Below 1 metre.
Swell
South to southwesterly 3 to 4 metres, decreasing to 2.5 to 3 metres during the morning.
Weather
Partly cloudy.

Tuesday 14 April

Winds
Westerly 10 to 15 knots.
Seas
Below 1 metre.
Swell
Southwesterly 1.5 to 2.5 metres.
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 am CST Sunday.

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