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 Saturday 8 August 2026.

Weather Situation

A weak high pressure system centred over NSW and a cold front approaching from the west result in a northerly airstream over SA this morning. The vigorous cold front will move across the west late Saturday then moving across remaining parts of the State on Sunday. A high pressure system moves just to the north on Monday, ahead of another cold front forecast to move across South Australia on Tuesday.

Forecast for Saturday until midnight

Strong Wind Warning for Saturday for Upper South East Coast

Winds
North to northeasterly 15 to 20 knots, reaching up to 30 knots offshore in the late morning.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres during the morning.
Swell
Southwesterly 2 to 3 metres.
Weather
Cloudy. 90% chance of showers.

Sunday 9 August

Strong Wind Warning for Sunday for Upper South East Coast

Winds
Northerly 15 to 20 knots shifting west to southwesterly 15 to 25 knots in the evening. Winds reaching up to 30 knots offshore in the late evening.
Seas
1 to 2 metres, decreasing to 1 metre by early evening.
Swell
Southwesterly 2 to 3 metres.
Weather
Cloudy. Near 100% chance of rain. The chance of a thunderstorm in the afternoon and evening.

Monday 10 August

Winds
Southwesterly 20 to 30 knots turning west to northwesterly 15 to 20 knots during the afternoon.
Seas
2 to 3 metres, decreasing to 1.5 metres during the evening.
Swell
Southwesterly 3 metres, increasing to 3 to 4 metres during the morning.
Weather
Cloudy. 95% 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 am CST Saturday.

Product IDS11066