IDS10035
Australian Government Bureau of Meteorology
South Australia
Issued at 3:40 am CDT on Thursday 11 December 2025
for the period until midnight CDT Sunday 14 December 2025.
Please be aware
Wind 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.
A ridge of high pressure persists over southern SA, before the high centre moves eastwards over the Tasman Sea late today. A trough of low pressure is expected to move eastwards across the SA waters on Friday. Another ridge of high pressure will move over the south during the weekend.
Winds: East to southeasterly 10 to 15 knots tending southeast to southwesterly in the middle of the day then tending southeasterly in the evening. Seas: Below 1 metre. Swell: West to southwesterly below 0.5 metres. Weather: Mostly sunny.
Winds: Easterly 10 to 15 knots becoming variable below 10 knots before dawn then becoming south to southwesterly 10 to 15 knots in the early afternoon. Winds reaching up to 20 knots north of Grange in the evening. Seas: Below 1 metre, increasing to 1 to 1.5 metres north of Brighton by early evening. Swell: West to southwesterly below 0.5 metres. Weather: Partly cloudy.
Winds: Southerly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres north of Brighton during the afternoon. Swell: West to southwesterly below 0.5 metres. Weather: Mostly sunny.
Winds: South to southwesterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon or evening. Swell: West to southwesterly below 0.5 metres. Weather: Partly cloudy.
The next routine forecast will be issued at 9:30 am CDT Thursday.
* Calls to 1300 number cost around 27.5c inc. GST, higher from mobiles or public phones. Marine forecasts are also available on VHF and HF radio. View the radio schedule on www.bom.gov.au/marine
Check the latest Coastal Waters Forecast or Local Waters Forecast at http://www.bom.gov.au/sa/forecasts/map.shtml for information on wind, wave and weather conditions for these coastal zones.