Perth Coastal Waters Forecast: Two Rocks to Dawesville, offshore from Rottnest Island

View the current warnings for Western Australia

Forecast issued at 7:01 pm WST on Tuesday 11 November 2025.

Weather Situation

A firm ridge of high pressure extends over southern WA as a trough deepens along the west coast, leading to fresh winds about parts of the west and southwest coasts. The trough moves inland on Wednesday, and a new ridge begins developing around the coast from Thursday.

Forecast for Tuesday until midnight

Winds
Southerly 15 to 20 knots tending southeasterly in the late evening.
Seas
1 to 1.5 metres.
Swell
Southwesterly 1 to 1.5 metres.
Weather
Clear.

Wednesday 12 November

Strong Wind Warning for Wednesday for Perth Coast

Winds
Southeasterly 10 to 15 knots tending southerly 15 to 25 knots in the early morning then increasing to 20 to 30 knots in the late afternoon.
Seas
1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
Swell
Southwesterly 1 to 1.5 metres, tending southerly 1 to 1.5 metres during the morning.
Weather
Sunny.

Thursday 13 November

Winds
Southeasterly 15 to 25 knots tending southerly in the morning.
Seas
1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning, then increasing to 1.5 to 2 metres during the afternoon.
Swell
Southerly 1 to 1.5 metres, tending southwesterly 1 to 1.5 metres during the morning, then decreasing below 1 metre by early evening.
Weather
Partly cloudy.

Friday 14 November

Winds
Southerly 20 to 30 knots.
Seas
1.5 to 2 metres.
Swell
Southwesterly around 1 metre, increasing to 1 to 1.5 metres during the morning.
Weather
Mostly sunny.

Please be awareWind 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.

Nearby Coastal Waters

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The next routine forecast will be issued at 1:01 am WST Wednesday.

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