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 Thursday 22 August 2019.

Weather Situation

A cold front will move through coastal waters during Thursday evening and into Friday morning. A ridge then develops over southern WA during Friday in the wake of the front.

Forecast for Thursday until midnight

Strong Wind Warning for Thursday for Perth Coast

Winds
Northwesterly 25 to 30 knots turning southwesterly in the evening. Squalls to 45 knots possible in showers and thunderstorms.
Seas
2.5 to 3 metres.
Swell
Southwesterly 2.5 to 3 metres.
Weather
Cloudy. 90% chance of rain. The chance of a thunderstorm this evening.

Friday 23 August

Strong Wind Warning for Friday for Perth Coast

Winds
Southwesterly 25 to 30 knots turning southerly 10 to 15 knots in the late morning and early afternoon.
Seas
2.5 to 3 metres, decreasing below 2 metres around midday.
Swell
Southwesterly 3 metres, increasing to 3 to 5 metres during the morning.
Weather
Partly cloudy. 80% chance of showers. The chance of a thunderstorm in the early morning.

Saturday 24 August

Winds
East to southeasterly 10 to 15 knots becoming south to southeasterly about 10 knots in the early afternoon.
Seas
Around 1 metre.
Swell
Southwesterly 3 to 5 metres, decreasing to 3 metres by early evening.
Weather
Partly cloudy.

Sunday 25 August

Winds
East to southeasterly 10 to 15 knots tending south to southeasterly during the day.
Seas
Around 1 metre.
Swell
Southwesterly 2.5 to 3 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 Friday.

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