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 25 May 2017.

Weather Situation

A ridge of high pressure lies over the south of the State. A cold front will reach the southwest corner Thursday evening, moving across western and southern waters during Thursday night and Friday morning before weakening and contracting eastwards later on Friday. A new ridge of high pressure will develop over the southwest of the State by Friday evening and extend over remaining southern parts during Saturday. Another weak cold front will brush the south coast during Monday.

Forecast for Thursday until midnight

Winds
Westerly 10 to 15 knots, reaching up to 20 knots offshore in the late evening.
Seas
1 to 1.5 metres.
Swell
Southwesterly 2.5 to 3 metres.
Weather
Partly cloudy. 20% chance of a shower offshore.

Friday 26 May

Winds
Westerly 15 to 20 knots shifting south to southwesterly in the early morning then south to southeasterly 10 to 15 knots during the evening. Winds reaching up to 20 knots in the late evening.
Seas
1 to 1.5 metres.
Swell
Southwesterly 1.5 to 2.5 metres, increasing to 3 to 4 metres offshore.
Weather
Partly cloudy. 90% chance of showers.

Saturday 27 May

Winds
Southeasterly 15 to 20 knots, easing to 10 to 15 knots around midday.
Seas
1 to 1.5 metres, decreasing to 1 metre around midday.
Swell
Southwesterly 2.5 to 4 metres, decreasing to 2 to 3 metres during the morning.
Weather
Partly cloudy. 40% chance of showers offshore.

Sunday 28 May

Winds
East to southeasterly 10 to 15 knots.
Seas
Around 1 metre.
Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Partly cloudy.

Please be awareWind gusts can be 40 percent stronger than the averages given here, and maximum waves may be up to twice the height. Wind warnings are issued for today and tomorrow and describe the highest category of wind warning for that day.

Nearby Coastal Waters

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

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