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

View the current warnings for South Australia

Forecast issued at 3:30 pm CST on Friday 17 April 2026.

Weather Situation

A high pressure system south of the Bight extends a ridge over SA. The high will slowly move east over the weekend ahead of a cold front which will slip to the south of SA and weaken. The high will remain near stationary in the southern Tasman Sea, maintaining a ridge across the state early next week.

Forecast for Friday until midnight

Winds
South to southeasterly 10 to 15 knots becoming variable about 10 knots in the late evening.
Seas
Below 1 metre.
Swell
Southwesterly 3 to 4 metres, decreasing to 3 metres later in the evening.
Weather
Partly cloudy.

Saturday 18 April

Winds
Variable about 10 knots becoming northeasterly 10 to 15 knots in the early morning. Winds reaching up to 20 knots offshore in the late evening.
Seas
Below 1 metre, increasing to around 1 metre offshore.
Swell
Southwesterly 2.5 to 3 metres, tending southerly 2 to 2.5 metres during the afternoon.
Weather
Partly cloudy.

Sunday 19 April

Winds
Northerly 15 to 20 knots shifting south to southwesterly 10 to 15 knots during the afternoon and evening.
Seas
1 to 1.5 metres, decreasing to 1 metre by early evening.
Swell
Southerly 1.5 to 2 metres.
Weather
Partly cloudy. 70% chance of showers. The chance of a thunderstorm in the morning.

Monday 20 April

Winds
Southerly 10 to 15 knots turning east to southeasterly below 10 knots during the afternoon.
Seas
Below 1 metre.
Swell
Southerly 1.5 to 2 metres, tending southwesterly 2 metres during the morning.
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

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The next routine forecast will be issued at 9:30 pm CST Friday.

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