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 Monday 21 October 2019.

Weather Situation

A deep trough over Eucla waters will move east during Monday and Tuesday, with a high pressure ridge developing over southern parts of the State to the west of the trough. A weak front will brush the south coast on Wednesday with the ridge strengthening near the south coast during Thursday.

Forecast for Monday until midnight

Winds
South to southwesterly about 10 knots.
Seas
Below 1 metre.
Swell
Southwesterly 1.5 metres, increasing to 1.5 to 2 metres by early evening.
Weather
Partly cloudy.

Tuesday 22 October

Winds
South to southeasterly about 10 knots tending southwesterly 10 to 15 knots in the middle of the day then decreasing to about 10 knots in the late evening.
Seas
Below 1 metre.
Swell
Southwesterly 2 metres, increasing to 2.5 to 3 metres during the morning, then increasing to 3 to 4 metres around midday.
Weather
Cloud clearing.

Wednesday 23 October

Winds
West to southwesterly about 10 knots increasing to 15 to 20 knots in the morning.
Seas
Below 1 metre, increasing to 1 to 2 metres around midday.
Swell
Southwesterly 4 metres, decreasing to 3 metres during the morning, then increasing to 3 to 4 metres during the afternoon.
Weather
Partly cloudy.

Thursday 24 October

Winds
Southwesterly 15 to 20 knots tending southerly during the morning.
Seas
1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
Swell
Southwesterly 4 to 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.

Nearby Coastal Waters

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

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