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 Monday 1 June 2026.

Weather Situation

A significant low pressure system moves over waters to the south of SA on Monday and Tuesday, reaching western Bass Strait Tuesday afternoon. Another low pressure system moves over waters to the south on Wednesday. A ridge of high pressure develops over western and northern parts as a series of troughs and fronts move over the south later in the week.

Forecast for Monday until midnight

Gale Warning for Monday for Upper South East Coast

Winds
North to northeasterly 20 to 30 knots, reaching up to 35 knots offshore in the late morning. Winds turning northwesterly in the early afternoon.
Seas
1 to 1.5 metres, increasing to 2 to 3 metres during the morning.
Swell
Southwesterly 2.5 to 3 metres, decreasing to 1.5 to 2 metres during the afternoon.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm.

Tuesday 2 June

Gale Warning for Tuesday for Upper South East Coast

Winds
Northwesterly 25 to 30 knots turning west to southwesterly 20 to 30 knots early in the morning. Winds reaching up to 35 knots in the evening.
Seas
2.5 to 3 metres.
Swell
Southwesterly 1.5 metres, tending westerly 1 to 2 metres during the morning, then increasing to 2 to 3 metres during the afternoon.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning.

Wednesday 3 June

Winds
Southwesterly 20 to 30 knots decreasing to 10 to 15 knots during the afternoon.
Seas
2 to 3 metres, decreasing to 1 to 1.5 metres during the afternoon or evening.
1st Swell
Westerly 2 to 3 metres, tending southwesterly 2.5 to 4 metres during the morning.
2nd Swell
Easterly below 0.5 metres, tending southerly 1 to 2 metres during the morning.
Weather
Partly cloudy. 95% chance of showers. The chance of a thunderstorm in the evening.

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 Monday.

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