IDW11140
Australian Government Bureau of Meteorology
Western Australia
Issued at 1:01 am WST on Tuesday 18 November 2025
for the period until midnight WST Thursday 20 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 firm ridge of high pressure extending over southern WA will gradually weaken today, 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.
Winds: East to southeasterly 15 to 25 knots, reaching up to 30 knots in the evening. Seas: 1 to 2 metres. Swell: Southwesterly 2 to 2.5 metres. Weather: Cloudy.
Winds: Easterly 20 to 30 knots decreasing to 20 to 25 knots before dawn then tending east to southeasterly 20 to 30 knots in the middle of the day. Seas: 1.5 to 2.5 metres. 1st Swell: Southwesterly 1.5 to 2.5 metres. 2nd Swell: Southeasterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore around midday. Weather: Cloudy. The chance of a thunderstorm north of Cape Leeuwin.
Winds: Easterly 20 to 30 knots. Seas: 1.5 to 2.5 metres. 1st Swell: Southwesterly 1.5 to 2.5 metres. 2nd Swell: East to southeasterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore. Weather: Cloudy. 60% chance of showers. The chance of a thunderstorm in the morning.
Winds: Southeasterly 10 to 15 knots turning easterly 15 to 20 knots during the morning and early afternoon. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore west of Albany around midday. Swell: Southwesterly 2 to 2.5 metres. Weather: Cloudy.
Winds: Easterly 15 to 25 knots increasing to 25 to 30 knots in the evening. Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres around midday. Swell: Southwesterly 2 to 2.5 metres. Weather: Cloudy.
Winds: Easterly 20 to 30 knots. Seas: 2 to 2.5 metres. 1st Swell: Southwesterly 2.5 to 3 metres, tending southerly 2 to 2.5 metres during the morning. 2nd Swell: Easterly around 1 metre. Weather: Cloudy. 60% chance of showers.
Winds: Southeasterly 10 to 15 knots, reaching up to 20 knots west of Esperance in the evening. Winds turning easterly in the evening. Seas: Around 1 metre. Swell: Southwesterly 2 to 2.5 metres. Weather: Cloudy.
Winds: Easterly 15 to 25 knots increasing to 20 to 30 knots in the late afternoon. Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres around midday. Swell: Southwesterly 2 to 2.5 metres. Weather: Cloudy.
Winds: Easterly 20 to 30 knots. Seas: 1.5 to 2.5 metres. Swell: Southerly 2 to 3 metres. Weather: Cloudy. 70% chance of showers.
Winds: Variable below 10 knots becoming south to southeasterly 10 to 15 knots in the middle of the day then tending east to southeasterly in the evening. Seas: Below 1 metre. Swell: Southwesterly 1.5 to 2 metres. Weather: Partly cloudy.
Winds: East to southeasterly 15 to 20 knots, reaching up to 25 knots east of Eyre in the evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon. Swell: Southwesterly 1.5 to 2 metres. Weather: Cloudy.
Winds: Easterly 20 to 30 knots. Seas: 1.5 to 2.5 metres. Swell: Southerly 2 to 3 metres. Weather: Cloudy. 70% chance of showers. The chance of a thunderstorm in the afternoon and evening.
The next routine forecast will be issued at 7:01 am 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