View the current warnings for South Australia
Forecast issued at 3:30 pm CDT on Wednesday 17 December 2025.
Weather Situation
A ridge of high pressure extends across most of SA this evening, as a trough of low pressure develops over the west on Thursday. This broad area of low pressure is expected to slowly move across the state from the west during Friday and Saturday, before another ridge of high pressure develops through the west and south on Sunday.
Forecast for Wednesday until midnight
- Winds
- Easterly 15 to 20 knots.
- Seas
- Below 1 metre, increasing to 1 to 1.5 metres by early evening.
- Swell
- Southeasterly around 1 metre.
- Weather
- Clear.
Thursday 18 December
- Winds
- East to northeasterly 15 to 20 knots shifting southerly early in the morning. Winds reaching up to 25 knots offshore in the evening.
- Seas
- 1 to 1.5 metres, decreasing below 1 metre during the morning, then increasing to 1 to 2 metres during the afternoon.
- Swell
- Southwesterly below 1 metre.
- Weather
- Mostly sunny.
Friday 19 December
- Winds
- Southerly 15 to 20 knots turning southeasterly in the afternoon.
- Seas
- 1 to 2 metres.
- Swell
- Southwesterly around 1 metre, increasing to 1 to 1.5 metres during the morning, then tending southerly 1.5 to 2 metres during the afternoon.
- Weather
- Cloudy.
Saturday 20 December
- Winds
- Southeasterly 10 to 15 knots turning south to southwesterly 20 to 30 knots during the afternoon.
- Seas
- Around 1 metre, increasing to 1.5 to 2 metres during the evening.
- 1st Swell
- Southerly 1 to 2 metres, tending southwesterly below 1 metre during the evening.
- 2nd Swell
- Southeasterly around 1 metre.
- Weather
- Cloudy. The chance of a thunderstorm in the evening.
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 pm CDT Wednesday.
Product IDS11061