Perth Local Waters Forecast: Two Rocks to Dawesville, inshore from Rottnest Island

View the current warnings for Western Australia

Forecast issued at 4:01 am WST on Friday 25 April 2014.

Weather Situation

A ridge of high pressure lies to the south of the state with a high expected to move into the Bight by Saturday morning. A low will develop off the west coast during Saturday and contract to the south of the state Sunday morning. A cold front will affect the southwest of the state during Sunday afternoon and evening. A ridge will develop near the south coast during Monday.

Forecast for Friday until midnight

Winds
South to southeasterly 10 to 15 knots becoming northeast to southeasterly about 10 knots during the afternoon before increasing to 10 to 15 knots in the evening
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the afternoon, then decreasing below 1 metre by early evening.
Swell
Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres around dawn.

Saturday 26 April

Winds
Easterly 10 to 15 knots becoming northeast to northwesterly about 10 knots in the middle of the day and northwest to southwesterly by evening.
Seas
Below 1 metre.
Swell
Southwesterly 1 to 1.5 metres, decreasing to around 1 metre before dawn, then increasing to 1 to 1.5 metres during the morning.
Weather
Isolated thunderstorms during the afternoon and evening.

Sunday 27 April

Winds
Westerly 15 to 20 knots turning southwesterly during the evening.
Seas
Around 1 metre, increasing to 1.5 metres during the afternoon or evening.
Swell
Southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres during the morning.

Monday 28 April

Winds
Southwesterly 20 to 25 knots turning south to southeasterly 15 to 20 knots during the afternoon.
Seas
1.5 to 2 metres, decreasing below 1.5 metres during the afternoon or evening.
Swell
Southwesterly 2 to 3 metres, increasing to 2.5 to 4 metres.

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.

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

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