IDS11072
Australian Government Bureau of Meteorology
South Australia
Issued at 9:32 pm CDT on Tuesday 18 November 2025
for the period until midnight CDT Friday 21 November 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 high southwest of Perth extends a ridge over SA directing a broad southwesterly flow across SA Waters. The flow will turn southeasterly with the ridge moving southeast this week and the high moving to a position well south of the Bight by Thursday night. The high and associated ridge is expected to pass over Tasmania on Friday allowing a trough to enter the far west of South Australia. The trough in the west is forecast to slowly move over the state at the weekend.
Winds: South to southeasterly 10 to 15 knots. Seas: Below 1 metre. Swell: Southwesterly 2 metres. Weather: Cloudy.
Winds: South to southeasterly about 10 knots increasing to 15 to 20 knots in the early afternoon. Seas: Around 1 metre, increasing to 1 to 1.5 metres inshore by early evening. Swell: Southwesterly 2 metres. Weather: Partly cloudy.
Winds: East to southeasterly 15 to 25 knots increasing to 20 to 30 knots in the evening. Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the afternoon. Swell: Southwesterly 2 to 2.5 metres, tending southerly 2 to 3 metres during the morning. Weather: Cloudy. 60% chance of showers. The chance of a thunderstorm in the evening.
Winds: Easterly 20 to 30 knots decreasing to 15 to 20 knots during the evening. Seas: 1.5 to 2.5 metres. 1st Swell: South to southwesterly 2 to 3 metres, decreasing to 1.5 to 2 metres during the afternoon. 2nd Swell: East to southeasterly around 1 metre. Weather: Partly cloudy. 80% chance of showers. A thunderstorm likely.
Winds: Southerly about 10 knots. Seas: Below 1 metre. Swell: Southwesterly 2 metres. Weather: Cloudy.
Winds: Southerly about 10 knots increasing to 10 to 15 knots in the middle of the day. Winds reaching up to 20 knots inshore in the late evening. Seas: Below 0.5 metres, increasing to around 1 metre during the afternoon. Swell: Southwesterly 2 to 2.5 metres. Weather: Cloudy.
Winds: Southeasterly 15 to 25 knots increasing to 20 to 30 knots in the evening. Seas: Around 1 metre, increasing to 1.5 to 2 metres by early evening. Swell: Southwesterly 2 to 3 metres. Weather: Partly cloudy.
Winds: Southeasterly 20 to 25 knots tending easterly 15 to 25 knots during the morning. Seas: 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning. Swell: Southwesterly 2 to 3 metres, decreasing to 1.5 to 2 metres during the afternoon. Weather: Partly cloudy. 70% chance of showers. The chance of a thunderstorm.
Winds: South to southwesterly about 10 knots. Seas: Below 1 metre. Swell: Southwesterly 2 to 2.5 metres. Weather: Cloudy.
Winds: Southwesterly 10 to 15 knots turning southerly in the early afternoon. Winds reaching up to 20 knots inshore in the evening. Seas: Around 1 metre. Swell: Southwesterly 2 to 2.5 metres. Weather: Cloudy.
Winds: South to southeasterly 15 to 25 knots becoming southeasterly 20 to 30 knots in the evening. Seas: Below 1 metre, increasing to 1 to 2 metres during the afternoon. Swell: Southwesterly 2.5 to 3 metres. Weather: Partly cloudy.
Winds: Easterly 15 to 25 knots. Seas: 1 to 2 metres. 1st Swell: Southwesterly 2 to 3 metres, decreasing to 1.5 to 2 metres during the afternoon or evening. 2nd Swell: South to southeasterly around 1 metre. Weather: Partly cloudy. 60% chance of showers. The chance of a thunderstorm in the evening.
Winds: Southwesterly 10 to 15 knots. Seas: Below 1 metre. Swell: Southwesterly 2.5 metres. Weather: Partly cloudy.
Winds: Southwesterly 10 to 15 knots turning southerly in the evening. Winds reaching up to 20 knots inshore in the evening. Seas: Around 1 metre. Swell: Southwesterly 2.5 to 3 metres. Weather: Cloudy.
Winds: Southerly 10 to 15 knots turning southeasterly 15 to 25 knots in the morning. Seas: Around 1 metre, increasing to 1.5 metres later in the evening. Swell: Southwesterly 3 metres, increasing to 3 to 4 metres during the morning, then decreasing to 3 metres later in the evening. Weather: Cloudy.
Winds: Easterly 15 to 25 knots. Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres in the west. 1st Swell: Southwesterly 2 to 3 metres, decreasing to 1.5 to 2 metres during the evening. 2nd Swell: Below 0.5 metres, tending southerly 1 to 1.5 metres during the morning. Weather: Partly cloudy. The chance of a thunderstorm in the evening.
Winds: Southwesterly 10 to 15 knots. Seas: Around 1 metre. Swell: Southwesterly 2.5 to 3 metres. Weather: Partly cloudy.
Winds: Southwesterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres around midday. Swell: Southwesterly 2.5 to 3 metres, increasing to 3 to 4 metres later in the evening. Weather: Cloudy.
Winds: South to southwesterly 15 to 20 knots turning southeasterly during the morning and early afternoon. Seas: Around 1 metre, increasing to 1 to 1.5 metres west of Kangaroo Island later in the evening. Swell: Southwesterly 3 to 4 metres, decreasing to 3 metres later in the evening. Weather: Cloudy.
Winds: Southeasterly 15 to 20 knots turning easterly 15 to 25 knots during the morning. Seas: 1 to 1.5 metres, increasing to 1 to 2 metres west of Kangaroo Island. 1st Swell: Southwesterly 2 to 3 metres. 2nd Swell: Southerly around 1 metre. Weather: Partly cloudy.
Winds: Southwesterly 10 to 15 knots. Seas: Around 1 metre. Swell: Southwesterly 2.5 metres. Weather: Partly cloudy.
Winds: West to southwesterly 15 to 20 knots. Seas: Around 1 metre. Swell: Southwesterly 2.5 to 3 metres. Weather: Cloudy.
Winds: Southwesterly 15 to 20 knots turning south to southeasterly during the day. Seas: Around 1 metre, increasing to 1 to 1.5 metres by early evening. Swell: Southwesterly 3 metres, increasing to 3 to 4 metres during the morning, then decreasing to 3 metres later in the evening. Weather: Cloudy.
Winds: East to southeasterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Southwesterly 2.5 to 3 metres. Weather: Partly cloudy.
Winds: Westerly 10 to 15 knots, reaching up to 20 knots south of Port MacDonnell. Seas: Around 1 metre, increasing to 1 to 1.5 metres south of Beachport. Swell: Southwesterly 3 metres. Weather: Partly cloudy.
Winds: Westerly 15 to 20 knots, reaching up to 25 knots south of Port MacDonnell during the morning and early afternoon. Winds turning southwesterly in the evening. Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres south of Port MacDonnell during the morning. Swell: Southwesterly 3 metres, increasing to 3 to 4 metres during the afternoon. Weather: Cloudy.
Winds: Southwesterly 15 to 20 knots turning south to southeasterly 10 to 15 knots during the day. Seas: 1 to 1.5 metres, decreasing below 1 metre during the morning. Swell: Southwesterly 4 metres. Weather: Partly cloudy.
Winds: Southeasterly 10 to 15 knots turning easterly 15 to 20 knots during the evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the evening. Swell: Southwesterly 2.5 to 3 metres. Weather: Cloudy.
Winds: South to southwesterly 10 to 15 knots, reaching up to 20 knots north of Cowell to Wallaroo. Seas: Around 1 metre, increasing to 1.5 metres north of Cowell to Wallaroo. Swell: South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo. Weather: Partly cloudy.
Winds: Southwesterly 10 to 15 knots turning southerly 15 to 20 knots in the middle of the day. Winds reaching up to 25 knots north of Cowell to Wallaroo during the afternoon and evening. Seas: Below 1 metre, increasing to 1 to 2 metres during the afternoon. Swell: South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo. Weather: Partly cloudy.
Winds: South to southeasterly 15 to 25 knots increasing to 20 to 30 knots in the late afternoon then becoming southeasterly 15 to 25 knots in the evening. Seas: 1 to 1.5 metres, increasing to 1 to 2 metres by early evening. Swell: South to southwesterly around 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo. Weather: Partly cloudy.
Winds: East to southeasterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: South to southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres during the afternoon. Weather: Partly cloudy.
Winds: Southwesterly 10 to 15 knots. Seas: Around 1 metre. Swell: South to southwesterly below 0.5 metres. Weather: Partly cloudy.
Winds: Southwesterly 10 to 15 knots turning southerly 15 to 20 knots in the afternoon. Seas: Around 1 metre, increasing to 1 to 1.5 metres in the eastern waters by early evening. Swell: West to southwesterly below 0.5 metres. Weather: Partly cloudy.
Winds: Southerly 15 to 20 knots increasing to 25 knots before turning southeasterly 15 to 20 knots in the evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon. Swell: West to southwesterly below 0.5 metres. Weather: Partly cloudy.
Winds: Easterly 15 to 20 knots turning southeasterly during the afternoon. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. Swell: West to southwesterly below 0.5 metres. Weather: Partly cloudy.
Winds: Southwesterly 10 to 15 knots. Seas: Around 1 metre. Swell: West to southwesterly around 1 metre. Weather: Partly cloudy.
Winds: West to southwesterly 15 to 20 knots tending south to southwesterly during the afternoon and evening. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon. Swell: West to southwesterly around 1 metre. Weather: Partly cloudy.
Winds: South to southwesterly 10 to 15 knots turning southeasterly 15 to 20 knots in the morning. Seas: Around 1 metre, increasing to 1 to 1.5 metres by early evening. Swell: West to southwesterly around 1 metre, increasing to 1 to 1.5 metres through the Backstairs Passage. Weather: Cloudy.
Winds: East to southeasterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: West to southwesterly around 1 metre, increasing to 1 to 1.5 metres through the Backstairs Passage. Weather: Partly cloudy.
The next routine forecast will be issued at 3:40 am CDT Wednesday.
* Calls to 1300 numbers cost around 27.5c incl. 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 Forecasts for information on wind, wave and weather conditions for neighbouring coastal zones.