IDW11140
Australian Government Bureau of Meteorology
Western Australia
Issued at 7:01 pm WST on Thursday 19 March 2026
for the period until midnight WST Sunday 22 March 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.
A ridge over central and southeastern parts of the state will slowly weaken over the weekend. A west coast trough will move inland later Saturday, ahead of a weak cold front brushing past the south coast on Sunday. A new ridge will arrive on the southwest coast on Sunday, building east along the south coast on Monday.
Winds: Southeasterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Southwesterly 2 to 2.5 metres. Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots offshore north of Cape Leeuwin early in the morning. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon. Swell: Southwesterly 2 to 3 metres. Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots turning southerly in the late morning. Seas: 1 to 1.5 metres, increasing to 1 to 2 metres inshore around midday. Swell: Southwesterly 2 to 2.5 metres. Weather: Cloudy.
Winds: Southeasterly 20 to 30 knots. Seas: 1 to 2 metres. 1st Swell: Southwesterly 2 to 2.5 metres. 2nd Swell: Southerly below 1 metre inshore, increasing to 1 to 1.5 metres offshore north of Cape Leeuwin during the afternoon or evening. Weather: Cloudy.
Winds: Southerly 10 to 15 knots turning southeasterly in the evening. Seas: Around 1 metre. Swell: Southwesterly 2.5 metres. Weather: Cloudy.
Winds: South to southeasterly 10 to 15 knots tending east to southeasterly during the day. Seas: Below 1 metre. Swell: Southwesterly 2.5 to 3 metres. Weather: Cloudy.
Winds: Easterly 10 to 15 knots turning south to southeasterly 15 to 20 knots in the late morning. Seas: Around 1 metre. Swell: Southwesterly 2 to 3 metres. Weather: Cloudy.
Winds: Southerly 10 to 15 knots tending southeasterly 15 to 20 knots during the morning. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning. Swell: Southwesterly 2 to 2.5 metres. Weather: Cloudy. 50% chance of showers.
Winds: Northeasterly 10 to 15 knots, reaching up to 20 knots east of Esperance in the late evening. Seas: Around 1 metre. Swell: Southwesterly 2 metres. Weather: Mostly clear.
Winds: Northwest to northeasterly 10 to 15 knots, reaching up to 20 knots east of Esperance early in the morning. Winds tending southeast to southwesterly before dawn then tending east to southeasterly in the evening. Seas: Around 1 metre. Swell: Southwesterly 2 to 2.5 metres. Weather: Partly cloudy.
Winds: Variable about 10 knots becoming northeast to southeasterly 15 to 20 knots in the middle of the day then tending north to northeasterly in the late evening. Seas: Around 1 metre. Swell: Southwesterly 2 to 3 metres. Weather: Partly cloudy.
Winds: South to southeasterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Southwesterly 1.5 to 2 metres. Weather: Cloudy.
Winds: East to northeasterly 15 to 20 knots. Seas: Around 1 metre. Swell: Southwesterly 1.5 metres. Weather: Clear.
Winds: North to northeasterly 15 to 20 knots tending east to northeasterly 10 to 15 knots in the middle of the day. Seas: Around 1 metre. Swell: Southwesterly 1.5 metres, increasing to 1.5 to 2 metres during the morning. Weather: Sunny.
Winds: North to northeasterly 10 to 15 knots tending east to northeasterly 15 to 20 knots in the middle of the day. Seas: Around 1 metre. Swell: Southwesterly 1.5 to 2.5 metres. Weather: Sunny.
Winds: North to northeasterly 15 to 20 knots decreasing to about 10 knots during the morning then tending east to northeasterly 15 to 20 knots during the day. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. Swell: Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the afternoon or evening. Weather: Sunny.
The next routine forecast will be issued at 1:01 am WST Friday.
* 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