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

View the current warnings for Western Australia

Forecast issued at 4:00 am WST on Thursday 8 December 2016.

Weather Situation

A high pressure system lies to the south. A new low pressure trough will begin to develop near the coast on Friday, moving inland during Saturday.

Forecast for Thursday until midnight

Winds
Easterly 15 to 20 knots easing to 10 to 15 knots around dawn. Winds becoming variable to 10 knots late morning then shifting south to southwesterly 15 to 20 knots during the afternoon.
Seas
1 to 1.5 metres, decreasing below 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon.
Swell
Southwesterly 2 to 3 metres.
Weather
Sunny.

Friday 9 December

Winds
East to northeasterly 10 to 15 knots. Winds turning southerly around midday and increasing to 15 to 20 knots later in the afternoon.
Seas
Around 1 metre.
Swell
Southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres around midday.
Weather
Sunny.

Saturday 10 December

Winds
South to southeasterly 10 to 15 knots tending east to northeasterly during the morning then tending southerly during the afternoon.
Seas
Around 1 metre.
Swell
Southwesterly 1 to 1.5 metres.
Weather
Mostly sunny.

Sunday 11 December

Winds
Southerly 10 to 15 knots tending southwesterly 15 to 20 knots during the day then tending southeast to southwesterly 15 to 25 knots during the afternoon.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the afternoon.
Swell
West to southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres during the morning.
Weather
Partly cloudy. 40% chance of showers. The chance of a thunderstorm in the afternoon.

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 Thursday.

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