Australian Government

Bureau of Meteorology


Coastal Waters Forecast 

Marine (lite) Home

IDS11072

Australian Government Bureau of Meteorology
South Australia

Coastal Waters Forecast for South Australia

Issued at 3:30 pm CST on Monday 29 June 2026
for the period until midnight CST Thursday 2 July 2026.

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.

Warning Information

For latest warnings go to www.bom.gov.au, subscribe to RSS feeds, call 1300 659 210* or listen for warnings on relevant TV and radio broadcasts.

Weather Situation

A low pressure trough over central districts will move southeastwards and slip south of SA from early Tuesday. A series of low pressure systems passing through the Bight during the week will extend cold fronts that will cross over SA through to the end of the week.

Far West Coast: WA-SA Border to Fowlers Bay

Forecast for Monday 29 June until midnight

Winds: Westerly 10 to 15 knots, reaching up to 20 knots offshore in the late afternoon. Seas: 1 to 1.5 metres, decreasing to 1 metre later in the evening. Swell: Southwesterly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore. Weather: Mostly clear. The chance of a thunderstorm offshore early this evening.

Forecast for Tuesday 30 June

Strong Wind Warning for Tuesday for Far West Coast

Winds: North to northwesterly 15 to 20 knots, reaching up to 30 knots offshore in the evening. Seas: Around 1 metre, increasing to 1 to 2 metres offshore during the morning. Swell: Southwesterly 1.5 to 2 metres. Weather: Partly cloudy. 90% chance of showers. The chance of a thunderstorm in the evening.

Forecast for Wednesday 1 July

Winds: West to northwesterly 25 to 30 knots. Seas: 2 to 3 metres. Swell: Southwesterly 2 to 3 metres. Weather: Partly cloudy. 90% chance of showers. The chance of a thunderstorm in the morning.

Forecast for Thursday 2 July

Winds: West to northwesterly 25 to 30 knots tending west to southwesterly 20 to 30 knots during the morning. Seas: 2 to 3 metres, decreasing to 1.5 to 2 metres during the evening. Swell: Southwesterly 2 to 4 metres, increasing to 4 to 6 metres during the afternoon or evening. Weather: Partly cloudy. 90% chance of showers.

Upper West Coast: Fowlers Bay to Elliston

Forecast for Monday 29 June until midnight

Winds: West to northwesterly 10 to 15 knots, reaching up to 20 knots offshore in the late afternoon. Seas: 1 to 1.5 metres, decreasing below 1 metre later in the evening. Swell: Southwesterly 1.5 to 2 metres. Weather: Partly cloudy. The chance of a thunderstorm.

Forecast for Tuesday 30 June

Strong Wind Warning for Tuesday for Upper West Coast

Winds: Northwesterly 10 to 15 knots turning northerly 15 to 20 knots during the morning. Winds reaching up to 30 knots offshore in the late evening. Seas: Around 1 metre, increasing to 1 to 2 metres around midday. Swell: Southwesterly 2 to 2.5 metres. Weather: Partly cloudy. 70% chance of showers. The chance of a thunderstorm offshore in the evening.

Forecast for Wednesday 1 July

Winds: North to northwesterly 20 to 30 knots tending west to northwesterly 25 to 30 knots during the morning. Seas: 1 to 2 metres, increasing to 2 to 3 metres during the morning. Swell: Southwesterly 2 metres, tending westerly 2 to 3 metres during the morning. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning.

Forecast for Thursday 2 July

Winds: West to northwesterly 25 to 30 knots tending west to southwesterly 20 to 30 knots during the morning. Seas: 2 to 3 metres. Swell: Westerly 2 to 4 metres, tending southwesterly 4 to 7 metres during the afternoon or evening. Weather: Partly cloudy. 95% chance of showers.

Lower West Coast: Elliston to Cape Carnot

Forecast for Monday 29 June until midnight

Winds: Northwesterly 15 to 20 knots. Seas: 1 to 2 metres, decreasing to 1 metre later in the evening. Swell: Southwesterly 2 to 2.5 metres. Weather: Partly cloudy. 70% chance of showers. The chance of a thunderstorm.

Forecast for Tuesday 30 June

Strong Wind Warning for Tuesday for Lower West Coast

Winds: West to northwesterly 10 to 15 knots turning northerly 15 to 20 knots during the morning. Winds reaching up to 30 knots offshore in the late evening. Seas: Below 1 metre, increasing to 1.5 to 2 metres around midday. Swell: Southwesterly 2 to 2.5 metres. Weather: Partly cloudy. 80% chance of showers. The chance of a thunderstorm in the evening.

Forecast for Wednesday 1 July

Winds: Northerly 20 to 25 knots turning west to northwesterly 20 to 30 knots before dawn then becoming northwesterly 30 to 35 knots in the late evening. Seas: 2 to 3 metres. Swell: Southwesterly 1.5 to 2 metres, tending westerly 2 to 3 metres around midday. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Forecast for Thursday 2 July

Winds: West to northwesterly 30 to 35 knots tending west to southwesterly 20 to 30 knots during the day. Seas: 2.5 to 3 metres. Swell: Westerly 3 to 5 metres, increasing to 4 to 7 metres during the afternoon or evening. Weather: Partly cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning.

Central Coast

Forecast for Monday 29 June until midnight

Winds: Northwesterly 15 to 20 knots. Seas: 1.5 to 2 metres, decreasing to 1 to 1.5 metres by early evening. Swell: Southwesterly 2 to 2.5 metres. Weather: Partly cloudy. 80% chance of showers. The chance of a thunderstorm.

Forecast for Tuesday 30 June

Strong Wind Warning for Tuesday for Central Coast

Winds: West to northwesterly 10 to 15 knots tending north to northwesterly 15 to 20 knots early in the morning. Winds reaching up to 30 knots in the west in the late evening. Seas: Around 1 metre, increasing to 1.5 to 2 metres during the afternoon. Swell: Southwesterly 2 to 2.5 metres. Weather: Partly cloudy. 80% chance of showers. The chance of a thunderstorm in the west in the evening.

Forecast for Wednesday 1 July

Winds: Northerly 20 to 25 knots turning west to northwesterly 20 to 30 knots before dawn then becoming northwesterly 30 to 35 knots in the late evening. Seas: 2 to 3 metres. Swell: Southwesterly 1.5 to 2.5 metres, tending westerly 2 to 3 metres by early evening. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm.

Forecast for Thursday 2 July

Winds: West to northwesterly 30 to 35 knots tending west to southwesterly 25 to 30 knots during the day. Seas: 2.5 to 3 metres, increasing to 3 to 4 metres in the west. Swell: Westerly 3 to 5 metres, increasing to 5 to 8 metres during the afternoon or evening. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning and afternoon.

South Central Coast

Forecast for Monday 29 June until midnight

Winds: North to northwesterly 15 to 25 knots. Seas: 1.5 to 2.5 metres. Swell: Southwesterly 2 metres. Weather: Cloudy. 80% chance of showers. The chance of a thunderstorm west of Kangaroo Island later this evening.

Forecast for Tuesday 30 June

Strong Wind Warning for Tuesday for South Central Coast

Winds: Northwesterly 15 to 20 knots tending northerly in the early afternoon. Winds reaching up to 30 knots west of Kangaroo Island in the late evening. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 2 metres during the afternoon. Swell: Southwesterly 2 to 2.5 metres, tending westerly 2 to 2.5 metres during the morning, then tending southwesterly 2 to 2.5 metres during the afternoon. Weather: Partly cloudy. 80% chance of showers. The chance of a thunderstorm.

Forecast for Wednesday 1 July

Winds: Northerly 20 to 30 knots turning west to northwesterly 25 to 30 knots in the late morning and afternoon. Seas: 1.5 to 2 metres, increasing to 2 to 3 metres during the morning. Swell: Southwesterly 1.5 to 2.5 metres. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Forecast for Thursday 2 July

Winds: West to northwesterly 30 to 35 knots tending west to southwesterly 25 to 30 knots during the day. Seas: 2.5 to 4 metres. Swell: Southwesterly 2 to 3 metres, tending westerly 4 to 7 metres during the morning. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Upper South East Coast: Murray Mouth to Cape Jaffa

Forecast for Monday 29 June until midnight

Winds: Northerly 10 to 15 knots, reaching up to 20 knots offshore during the afternoon and evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore. Swell: Southwesterly 1.5 to 2 metres. Weather: Cloudy. 80% chance of showers.

Forecast for Tuesday 30 June

Winds: North to northwesterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Southwesterly 1.5 to 2 metres. Weather: Partly cloudy. 70% chance of showers.

Forecast for Wednesday 1 July

Winds: Northerly 15 to 25 knots increasing to 20 to 30 knots in the morning then tending northwesterly 25 to 30 knots in the early afternoon. Seas: 1.5 to 2.5 metres. Swell: Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres by early evening. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Forecast for Thursday 2 July

Winds: Northwesterly 25 to 35 knots turning westerly during the morning. Seas: 2.5 to 3 metres. Swell: Southwesterly 1.5 to 2 metres, tending westerly 2 to 4 metres during the morning. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the afternoon.

Lower South East Coast: Cape Jaffa to SA-VIC Border

Forecast for Monday 29 June until midnight

Strong Wind Warning for Monday for Lower South East Coast

Winds: Northerly 15 to 20 knots, reaching up to 30 knots offshore in the late evening. Seas: 1 to 1.5 metres, increasing to 2 to 2.5 metres offshore. Swell: Southwesterly 2 metres. Weather: Cloudy. 80% chance of showers.

Forecast for Tuesday 30 June

Strong Wind Warning for Tuesday for Lower South East Coast

Winds: North to northwesterly 15 to 25 knots, reaching up to 30 knots south of Port MacDonnell early in the morning. Seas: 1.5 to 2.5 metres. Swell: Southwesterly 2 metres, tending westerly 2 to 2.5 metres around midday, then tending southwesterly 2 to 2.5 metres later in the evening. Weather: Partly cloudy. 95% chance of showers.

Forecast for Wednesday 1 July

Winds: Northerly 20 to 30 knots turning northwesterly 25 to 30 knots in the late afternoon. Seas: 1.5 to 2 metres, increasing to 2 to 3 metres during the morning. Swell: Southwesterly 1.5 to 2.5 metres. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the afternoon and evening.

Forecast for Thursday 2 July

Winds: Northwesterly 25 to 30 knots turning westerly 30 to 35 knots during the morning. Seas: 3 to 5 metres. Swell: Southwesterly 1.5 to 2 metres, tending westerly 3 to 5 metres during the afternoon or evening. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the afternoon and evening.

Spencer Gulf

Forecast for Monday 29 June until midnight

Winds: North to northwesterly 10 to 15 knots, reaching up to 20 knots south of Cowell to Wallaroo in the late afternoon. Seas: 1 to 1.5 metres, decreasing to 1 metre later in the evening. Swell: South to southwesterly below 1 metre, increasing to around 1 metre south of Cowell to Wallaroo. Weather: Partly cloudy. 50% chance of showers.

Forecast for Tuesday 30 June

Winds: Northwesterly 10 to 15 knots turning northerly 15 to 20 knots during the morning. Winds reaching up to 25 knots near the Yorke Peninsula coast in the late evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon. Swell: South to southwesterly below 1 metre, increasing to around 1 metre south of Cowell to Wallaroo. Weather: Partly cloudy.

Forecast for Wednesday 1 July

Winds: Northerly 20 to 25 knots turning northwesterly 20 to 30 knots in the morning. Seas: 1 to 2 metres, increasing to 2 to 3 metres south of Cowell to Wallaroo around midday. Swell: South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo. Weather: Partly cloudy. 95% chance of showers. The chance of a thunderstorm in the morning.

Forecast for Thursday 2 July

Winds: Northwesterly 20 to 30 knots turning westerly during the morning. Seas: 1 to 2 metres, increasing to 2 to 3 metres south of Cowell to Wallaroo. Swell: West to southwesterly below 1 metre, increasing to around 1 metre south of Cowell to Wallaroo. Weather: Partly cloudy. 95% chance of showers.

Gulf St Vincent

Forecast for Monday 29 June until midnight

Winds: Northerly 10 to 15 knots, reaching up to 20 knots south of Port Vincent to Brighton in the evening. Seas: Around 1 metre. Swell: West to southwesterly below 0.5 metres. Weather: Partly cloudy. 70% chance of showers.

Forecast for Tuesday 30 June

Winds: North to northwesterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres south of Port Vincent to Brighton. Swell: South to southwesterly below 1 metre. Weather: Partly cloudy. 50% chance of showers.

Forecast for Wednesday 1 July

Winds: Northerly 15 to 25 knots turning northwesterly 20 to 30 knots in the late morning and afternoon. Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning. Swell: South to southwesterly below 1 metre. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning.

Forecast for Thursday 2 July

Winds: Northwesterly 20 to 30 knots turning westerly during the morning. Seas: 1.5 to 2.5 metres. Swell: South to southwesterly around 1 metre. Weather: Cloudy. Near 100% chance of showers.

Investigator Strait

Forecast for Monday 29 June until midnight

Winds: Northerly 15 to 20 knots turning northwesterly 10 to 15 knots in the late evening. Seas: 1 to 1.5 metres. Swell: West to southwesterly around 1 metre. Weather: Partly cloudy. 80% chance of showers.

Forecast for Tuesday 30 June

Winds: Northwesterly 10 to 15 knots turning northerly 15 to 20 knots in the middle of the day. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon. Swell: West to southwesterly around 1 metre, increasing to 1 to 1.5 metres during the morning. Weather: Partly cloudy. 70% chance of showers.

Forecast for Wednesday 1 July

Winds: Northerly 20 to 30 knots turning northwesterly 25 to 30 knots in the late morning. Seas: 1.5 to 2.5 metres. Swell: West to southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the morning, then increasing to 1 to 1.5 metres later in the evening. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Forecast for Thursday 2 July

Winds: Northwesterly 25 to 30 knots turning westerly 20 to 30 knots during the morning. Seas: 2.5 to 3 metres. Swell: Westerly 2 to 3 metres, increasing to 2 to 4 metres during the afternoon or evening. Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the afternoon.

The next routine forecast will be issued at 9:30 pm CST Monday.

* 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.