View the current warnings for South Australia
Forecast issued at 3:40 am CDT on Tuesday 20 October 2026.
Weather Situation
A trough of low pressure over southeastern South Australia lingers in the east, before weakening from Thursday. A slow moving high pressure system in the Tasman Sea re-establishes a ridge across southern parts from Wednesday. Another series of troughs move into western parts on Thursday and broadly across SA on Friday.
Forecast for Tuesday until midnight
- Winds
- Southwesterly 15 to 20 knots turning south to southeasterly below 10 knots during the day.
- Seas
- Around 1 metre.
- Swell
- Southwesterly 2 to 2.5 metres.
- Weather
- Cloudy. The chance of a thunderstorm during the morning and afternoon.
Wednesday 21 October
- Winds
- Variable about 10 knots becoming east to southeasterly 10 to 15 knots in the late afternoon.
- Seas
- Below 1 metre.
- Swell
- Southwesterly 2 metres, increasing to 2 to 3 metres during the morning.
- Weather
- Cloud clearing.
Thursday 22 October
- Winds
- Easterly 10 to 15 knots turning north to northeasterly below 10 knots during the morning then becoming variable during the day.
- Seas
- Below 1 metre.
- Swell
- Southwesterly 3 metres, increasing to 3 to 4 metres west of Kangaroo Island.
- 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 9:30 am CDT Tuesday.
Product IDS11065