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 Friday 9 June 2023.

Weather Situation

A high pressure system will will exit the State into South Australia tonight. A cold front will reach the South West Capes late on Saturday and continue eastward over the south coast on Sunday. A large swell generated by this front will affect the south coast on Sunday and Monday. Another cold front will reach the lower west coast on Tuesday night.

Forecast for Friday until midnight

Winds
West to northwesterly about 10 knots.
Seas
Below 1 metre.
Swell
Southwesterly 3 to 4 metres.
Weather
Partly cloudy. 60% chance of showers.

Saturday 10 June

Winds
Westerly 10 to 15 knots, increasing to 15 to 20 knots during the morning.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell
Southwesterly 3 to 4 metres, decreasing to 2.5 to 3 metres during the morning.
Weather
Partly cloudy. 90% chance of showers. The chance of a thunderstorm.

Sunday 11 June

Winds
Southwesterly 15 to 25 knots.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres during the morning.
Swell
Southwesterly 3 metres, increasing to 3 to 4 metres during the morning.
Weather
Partly cloudy. 80% chance of showers.

Monday 12 June

Winds
South to southwesterly 15 to 20 knots becoming west to southwesterly below 10 knots during the evening.
Seas
1 to 1.5 metres, decreasing below 1 metre during the morning.
Swell
Southwesterly 3 to 4 metres, decreasing to 2 to 3 metres during the morning.
Weather
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 Saturday.

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