View the current warnings for South Australia
Forecast issued at 3:40 am CST on Saturday 19 September 2026.
Weather Situation
A high pressure system centred over NSW extends a ridge over SA ahead of a cold front will approach from the west. The front moves across SA on Sunday. Another high pressure system will move eastwards across waters to the south during Monday then over Victoria on Tuesday.
Forecast for Saturday until midnight
- Winds
- Northerly 10 to 15 knots decreasing to below 10 knots in the early afternoon then tending northeasterly 10 to 15 knots in the evening.
- Seas
- Below 1 metre.
- Swell
- West to southwesterly below 0.5 metres.
- Weather
- Sunny.
Sunday 20 September
- Winds
- Northerly 15 to 20 knots, reaching up to 25 knots south of Port Noarlunga during the morning. Winds shifting west to southwesterly in the middle of the day.
- Seas
- Around 1 metre, increasing to 1 to 1.5 metres south of Brighton during the morning.
- Swell
- West to southwesterly below 0.5 metres.
- Weather
- Mostly sunny.
Monday 21 September
- Winds
- South to southwesterly 15 to 20 knots turning southeasterly 10 to 15 knots during the morning.
- Seas
- 1 to 1.5 metres, decreasing below 1 metre during the morning.
- Swell
- West to southwesterly below 1 metre.
- Weather
- Cloudy.
Tuesday 22 September
- Winds
- East to northeasterly 10 to 15 knots becoming variable below 10 knots during the day.
- Seas
- Below 1 metre.
- Swell
- West to southwesterly below 0.5 metres.
- Weather
- 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.
- 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 9:30 am CST Saturday.
Product IDS10035