View the current warnings for South Australia
Forecast issued at 9:30 pm CST on Thursday 17 September 2026.
Weather Situation
A strong high pressure system centred over Victoria will maintain a ridge across SA as it drifts slowly over NSW from Friday. A cold front will then approach from the west late Saturday and move across SA on Sunday, before another ridge pushes in behind the front. The associated high will then move eastwards across waters south from Monday.
Forecast for Thursday until midnight
- Winds
- Variable below 10 knots.
- Seas
- Below 0.5 metres.
- Swell
- South to southwesterly around 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo.
- Weather
- Clear.
Friday 18 September
- Winds
- North to northeasterly about 10 knots increasing to 10 to 15 knots in the early morning then becoming variable about 10 knots in the evening.
- Seas
- Below 1 metre.
- Swell
- South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo.
- Weather
- Sunny.
Saturday 19 September
- Winds
- Variable below 10 knots becoming north to northeasterly 15 to 20 knots before dawn.
- Seas
- Around 1 metre.
- Swell
- South to southwesterly around 1 metre.
- Weather
- Sunny.
Sunday 20 September
- Winds
- North to northwesterly 15 to 25 knots shifting southwesterly 15 to 20 knots during the day.
- Seas
- 1 to 1.5 metres, increasing to 1 to 2 metres south of Cowell to Wallaroo.
- Swell
- South to southwesterly around 1 metre.
- Weather
- Mostly sunny.
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
- See detailed wind and wave forecasts on MetEye
- This forecast is also available via scheduled broadcasts on marine radio.
- Latest Coastal Observations
- Tide Predictions
- Marine Knowledge Centre - explanations and definitions
The next routine forecast will be issued at 3:40 am CST Friday.
Product IDS11068