Adelaide Metropolitan Waters Forecast: St Kilda to Sellicks Beach, within 3.5 nm of the coast

No warnings for South Australia

Forecast issued at 3:40 am CDT on Sunday 28 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 today 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 Sunday until midnight

Winds
Variable about 10 knots becoming south to southwesterly 10 to 15 knots in the early afternoon then turning east to southeasterly in the evening.
Seas
Below 1 metre.
Swell
Westerly below 0.5 metres.
Weather
Sunny.

Monday 29 December

Winds
Variable below 10 knots becoming southwesterly 10 to 15 knots in the middle of the day then tending southeast to southwesterly 15 to 20 knots in the late afternoon.
Seas
Below 1 metre, increasing to 1 to 1.5 metres by early evening.
Swell
West to southwesterly below 1 metre.
Weather
Sunny.

Tuesday 30 December

Winds
Southeasterly 10 to 15 knots tending southerly 15 to 25 knots during the morning.
Seas
Around 1 metre, increasing to 1 to 2 metres during the morning.
Swell
West to southwesterly below 0.5 metres.
Weather
Partly cloudy.

Wednesday 31 December

Winds
South to southeasterly 15 to 25 knots.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres north of Grange during the afternoon or evening.
Swell
West to southwesterly below 0.5 metres.
Weather
Cloud clearing.

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.

The next routine forecast will be issued at 9:30 am CDT Sunday.

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