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

View the current warnings for South Australia

Forecast issued at 9:38 pm CDT on Saturday 27 December 2025.

Weather Situation

A high pressure system centred near Tasmania maintains a broad ridge over most of South Australia, with a trough crossing the Bight. The high centre moves eastward into the Tasman Sea on Sunday and Monday while the trough builds over central SA and slowly moves eastward. The trough moves into the northeast of SA on Wednesday while a high passes south of the Bight.

Forecast for Saturday until midnight

Winds
Southeasterly 10 to 15 knots.
Seas
Below 1 metre.
Swell
Southwesterly 1.5 metres.
Weather
Clear.

Sunday 28 December

Winds
East to southeasterly about 10 knots tending northeasterly 10 to 15 knots before dawn then turning southeasterly in the afternoon.
Seas
Below 1 metre.
Swell
Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore by early evening.
Weather
Sunny.

Monday 29 December

Winds
Northeasterly 10 to 15 knots becoming variable about 10 knots in the middle of the day then becoming south to southwesterly 15 to 20 knots in the early afternoon.
Seas
Below 1 metre, increasing to 1 to 1.5 metres by early evening.
Swell
Southwesterly 2 to 2.5 metres.
Weather
Sunny.

Tuesday 30 December

Winds
Southerly 20 to 30 knots.
Seas
1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
2nd Swell
Southeast to southwesterly 1 to 1.5 metres.
Weather
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 3:40 am CDT Sunday.

Product IDS11066