IDW11130
Australian Government Bureau of Meteorology
Western Australia
Issued at 1:01 am WST on Wednesday 21 October 2026
for the period until midnight WST Friday 23 October 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 southern WA is weakening. A series of weak cold fronts will brush past the southwest coast from today until Saturday. A new ridge will develop over southern WA on the weekend.
Winds: Southerly 15 to 25 knots. Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres during the afternoon. Swell: Southwesterly 2 to 2.5 metres. Weather: Mostly sunny.
Winds: Southerly 15 to 25 knots, reaching up to 30 knots inshore in the late afternoon. Seas: 1.5 to 2 metres, decreasing to 1.5 metres during the morning, then increasing to 1.5 to 2 metres during the afternoon. Swell: Southwesterly 2.5 to 3 metres. Weather: Mostly sunny.
Winds: Southerly 20 to 30 knots. Seas: 2 metres, increasing to 2.5 to 3 metres during the afternoon or evening. Swell: Southwesterly 3 metres. Weather: Cloud clearing.
Winds: Southerly 15 to 20 knots, reaching up to 25 knots about Shark Bay in the afternoon. 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: Mostly sunny.
Winds: Southerly 15 to 25 knots. Seas: 1 to 1.5 metres, increasing to 1 to 2 metres during the afternoon. Swell: Southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore south of Denham. Weather: Partly cloudy.
Winds: Southerly 20 to 30 knots. Seas: 2 to 3 metres. Swell: Southwesterly 2 to 3 metres inshore, increasing to 2.5 to 4 metres offshore north of Denham. Weather: Cloudy.
Winds: Southerly 10 to 15 knots becoming variable about 10 knots before dawn then becoming west to southwesterly 10 to 15 knots in the morning. Seas: Below 1 metre. Swell: Southwesterly 2.5 to 3 metres inshore, increasing to 3 to 4 metres offshore. Weather: Partly cloudy.
Winds: Southwesterly 10 to 15 knots turning southerly 15 to 20 knots in the early morning. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning. Swell: Southwesterly 3 metres inshore, increasing to 3 to 4 metres offshore. Weather: Cloudy.
Winds: Southerly 15 to 25 knots increasing to 25 to 30 knots during the afternoon. Seas: 1.5 to 2 metres, increasing to 2 to 3 metres during the afternoon. Swell: Southwesterly 3 to 4 metres. Weather: Cloudy.
Winds: Westerly about 10 knots increasing to 10 to 15 knots in the early morning. Winds reaching up to 20 knots offshore in the evening. Seas: Below 0.5 metres, increasing to around 1 metre during the morning. Swell: Southwesterly 4 metres. Weather: Partly cloudy.
Winds: Southwesterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore. Swell: Southwesterly 4 metres. Weather: Cloudy. 50% chance of showers.
Winds: Southwesterly 15 to 20 knots turning southerly 20 to 30 knots during the morning. Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning. Swell: Southwesterly 4 metres. Weather: Partly cloudy. 50% chance of showers.
Winds: West to northwesterly 15 to 20 knots tending west to southwesterly in the evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning. Swell: Southwesterly 4 metres. Weather: Partly cloudy.
Winds: Southwesterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Southwesterly 4 metres. Weather: Partly cloudy. 50% chance of showers.
Winds: Southwesterly 15 to 25 knots turning southerly 20 to 25 knots during the morning. Seas: 1.5 metres, increasing to 2 metres during the morning. Swell: Southwesterly 4 metres. Weather: Partly cloudy. 60% chance of showers.
Winds: Northwesterly 15 to 25 knots turning west to southwesterly 15 to 20 knots in the evening. Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres during the morning. Swell: Southwesterly 3 to 5 metres. Weather: Partly cloudy. 70% chance of showers.
Winds: Southwesterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Southwesterly 3 to 5 metres. Weather: Partly cloudy. 50% chance of showers.
Winds: South to southwesterly 15 to 25 knots. Seas: 1.5 metres, increasing to 1.5 to 2 metres during the morning. Swell: Southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore. Weather: Partly cloudy. 60% chance of showers.
The next routine forecast will be issued at 7:01 am WST 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