Perth Local Waters Forecast: Two Rocks to Dawesville, inshore from Rottnest Island

View the current warnings for Western Australia

Forecast issued at 1:01 pm WST on Friday 28 August 2026.

Weather Situation

A ridge is developing to the south. An inland trough will move close to the west coast on Sunday, before moving inland again ahead of a cold front sweeping through local waters during Monday.

Forecast for Friday until midnight

Winds
Southeasterly 15 to 20 knots.
Seas
Around 1 metre.
Swell
Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the afternoon.
Weather
Sunny.

Saturday 29 August

Winds
Southeasterly 10 to 15 knots.
Seas
Around 1 metre.
Swell
Southwesterly 1 to 1.5 metres.
Weather
Partly cloudy.

Sunday 30 August

Winds
East to southeasterly about 10 knots becoming south to southwesterly in the early afternoon.
Seas
Below 1 metre.
Swell
Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres during the morning.
Weather
Mostly sunny.

Monday 31 August

Winds
Variable below 10 knots becoming westerly 10 to 15 knots during the morning then tending southwesterly 15 to 20 knots during the evening.
Seas
Below 1 metre.
Swell
West to southwesterly 1.5 to 2 metres.
Weather
Partly cloudy. 60% chance of showers.

Tuesday 1 September

Winds
South to southwesterly 15 to 20 knots tending south to southeasterly during the morning then becoming south to southwesterly about 10 knots during the afternoon.
Seas
Around 1 metre.
Swell
West to southwesterly 1.5 to 2.5 metres.
Weather
Partly cloudy.

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.

The next routine forecast will be issued at 7:01 pm WST Friday.

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