IDW11130
Australian Government Bureau of Meteorology
Western Australia
Issued at 1:01 pm WST on Tuesday 18 November 2025
for the period until midnight WST 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 ridge of high pressure extending over southern WA is weakening, contracting to the south coast on Wednesday and moving away. Meanwhile, a trough located offshore is deepening associated with a low pressure system. The trough and low pressure system will move across the west coast later Wednesday and further inland on Thursday, lingering into the weekend.
Winds: Westerly about 10 knots increasing to 10 to 15 knots in the early afternoon. Seas: Below 1 metre. Swell: Southwesterly 1.5 metres. Weather: Mostly clear.
Winds: Westerly 10 to 15 knots tending southwesterly in the evening. Seas: Below 1 metre. Swell: Southwesterly 1 to 1.5 metres. Weather: Partly cloudy.
Winds: Southwesterly about 10 knots increasing to 10 to 15 knots in the early afternoon. Seas: Around 1 metre. Swell: Southwesterly 1 to 1.5 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: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore south of Coral Bay. Weather: Partly cloudy.
Winds: West to northwesterly 10 to 15 knots, reaching up to 20 knots about Shark Bay in the late afternoon. Winds tending west to southwesterly in the late afternoon then decreasing to about 10 knots in the late evening. Seas: Around 1 metre. Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore. Weather: Mostly clear.
Winds: Westerly 10 to 15 knots, reaching up to 20 knots about Shark Bay in the late afternoon. Winds turning southwesterly in the evening. Seas: Around 1 metre. Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore south of Denham. Weather: Partly cloudy.
Winds: Southwesterly 15 to 20 knots. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon. Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore south of Denham. Weather: Partly cloudy.
Winds: Southwesterly 15 to 20 knots turning southerly during the evening. Seas: 1 to 1.5 metres. Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore. Weather: Partly cloudy.
Winds: South to southwesterly 10 to 15 knots becoming south to southeasterly about 10 knots in the evening then tending west to northwesterly 10 to 15 knots in the late evening. Seas: Below 1 metre. Swell: Southwesterly 1.5 to 2.5 metres. Weather: Mostly clear. The chance of a thunderstorm.
Winds: West to northwesterly 10 to 15 knots becoming variable about 10 knots in the evening. Seas: Below 1 metre. Swell: Southwesterly 1.5 to 2 metres. Weather: Partly cloudy. The chance of a thunderstorm in the afternoon and early evening.
Winds: Variable about 10 knots becoming west to southwesterly 10 to 15 knots in the middle of the day then tending south to southwesterly in the evening. Seas: Around 1 metre. Swell: Southwesterly 1.5 to 2 metres. Weather: Partly cloudy. The chance of a thunderstorm inshore in the afternoon.
Winds: Southwesterly 10 to 15 knots. Seas: Around 1 metre. Swell: Southwesterly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore. Weather: Partly cloudy.
Winds: Southerly 10 to 15 knots turning southeasterly in the evening. Seas: Below 1 metre. Swell: Southwesterly 2 to 2.5 metres. Weather: Mostly clear. The chance of a thunderstorm.
Winds: East to southeasterly 10 to 15 knots becoming south to southeasterly about 10 knots in the early afternoon then increasing to 10 to 15 knots in the late evening. Seas: Around 1 metre. Swell: Southwesterly 2 to 2.5 metres. Weather: Partly cloudy. The chance of a thunderstorm in the morning and afternoon.
Winds: East to southeasterly 10 to 15 knots turning southerly in the late morning. Seas: Around 1 metre. Swell: Southwesterly 2 to 2.5 metres. Weather: Partly cloudy. The chance of a thunderstorm in the morning and afternoon.
Winds: Southwesterly 10 to 15 knots. Seas: Around 1 metre. Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore. Weather: Partly cloudy.
Winds: South to southeasterly about 10 knots increasing to 10 to 15 knots in the late afternoon. Seas: Below 1 metre. Swell: Southwesterly 1.5 to 2 metres. Weather: Partly cloudy.
Winds: East to southeasterly 15 to 20 knots tending south to southeasterly in the early afternoon then tending east to southeasterly in the evening. Seas: 1 to 1.5 metres, decreasing to 1 metre around midday. Swell: Southwesterly 1.5 to 2 metres. Weather: Partly cloudy. The chance of a thunderstorm.
Winds: East to southeasterly 15 to 20 knots turning southerly 10 to 15 knots in the late morning. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. Swell: Southwesterly 1 to 2 metres. Weather: Partly cloudy. The chance of a thunderstorm in the morning and afternoon.
Winds: Southeasterly 10 to 15 knots becoming variable below 10 knots during the day then becoming southwesterly 10 to 15 knots during the afternoon. Seas: Around 1 metre. Swell: Southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres during the afternoon or evening. Weather: Partly cloudy.
Winds: South to southeasterly 15 to 25 knots. Winds may reach up to 30 knots at times. Seas: Around 1 metre, increasing to 1 to 1.5 metres by early evening. 1st Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore. 2nd Swell: Southerly around 1 metre, increasing to 1 to 1.5 metres by early evening. Weather: Partly cloudy. The chance of a thunderstorm inshore.
Winds: Southeasterly 15 to 20 knots. Seas: 1 to 2 metres, decreasing to 1 to 1.5 metres around midday. 1st Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1 to 2 metres offshore. 2nd Swell: Southerly around 1 metre. Weather: Partly cloudy. The chance of a thunderstorm.
Winds: Southeasterly 15 to 20 knots tending easterly in the morning then turning south to southeasterly during the morning. Seas: 1 to 1.5 metres, decreasing to 1 metre around midday. 1st Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1 to 2 metres offshore. 2nd Swell: Southeast to southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the afternoon. Weather: Partly cloudy. The chance of a thunderstorm in the morning and afternoon.
Winds: Southeasterly 15 to 20 knots becoming variable below 10 knots during the day then becoming south to southwesterly 10 to 15 knots during the afternoon. Seas: Around 1 metre. 1st Swell: Southwesterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore. 2nd Swell: Southerly around 1 metre. Weather: Partly cloudy.
The next routine forecast will be issued at 7:01 pm WST Tuesday.
* 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