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

View the current warnings for Western Australia

Forecast issued at 4:00 pm WST on Tuesday 22 June 2021.

Weather Situation

A deep trough is moving along the south east coast, with a fresh to strong south to southwesterly flow along the west coast. A deep low pressure system south of the State will move east across the Bight. Conditions will start to ease from the west during Wednesday as a high pressure ridge moves over Western Coastal Waters and becomes established over coming days.

Forecast for Tuesday until midnight

Winds
Southerly 20 to 25 knots.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres by early evening.
Swell
South to southwesterly 1.5 to 2.5 metres.
Weather
Partly cloudy.

Wednesday 23 June

Winds
Southerly 20 to 25 knots turning southeasterly 10 to 15 knots during the morning and early afternoon.
Seas
1.5 to 2 metres, decreasing below 1 metre around midday.
Swell
Southerly 1 to 2 metres.
Weather
Partly cloudy.

Thursday 24 June

Winds
East to southeasterly 10 to 15 knots tending east to northeasterly early in the morning then decreasing to about 10 knots in the late afternoon.
Seas
Below 1 metre.
Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Partly cloudy.

Friday 25 June

Winds
Northeasterly 10 to 15 knots turning northerly during the morning.
Seas
Around 1 metre.
Swell
Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the morning.
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.

Nearby Coastal Waters

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The next routine forecast will be issued at 4:00 am WST Wednesday.

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