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
- North to northwesterly 10 to 15 knots shifting southerly in the early afternoon.
- Seas
- Below 1 metre.
- Swell
- Southwesterly 2 metres.
- Weather
- Cloudy. The chance of a thunderstorm.
Wednesday 21 October
- Winds
- South to southeasterly about 10 knots increasing to 10 to 15 knots in the early afternoon.
- Seas
- Below 1 metre.
- Swell
- Southwesterly 2 metres, increasing to 2 to 3 metres around midday.
- Weather
- Cloud clearing.
Thursday 22 October
- Winds
- Variable below 10 knots becoming north to northeasterly 10 to 15 knots during the morning then becoming variable about 10 knots during the day.
- Seas
- Below 1 metre.
- Swell
- Southwesterly 2.5 to 3 metres.
- 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 IDS11066