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

View the current warnings for Western Australia

Forecast issued at 4:00 pm WST on Friday 31 July 2015.

Weather Situation

A trough and associated low pressure system lies just to the north of the local waters and will move further inland tonight. A ridge of high pressure over the southwest of the State will extend east on Saturday and continue to build over the weekend and into the start of the new week.

Forecast for Friday until midnight

Strong Wind Warning for Friday for Perth Local Waters

Winds
South to southeasterly 10 to 15 knots increasing to 15 to 25 knots from the south from late afternoon. Winds tending east to southeasterly in the evening and reaching up to 30 knots at times offshore.
Seas
Around 1 metre, increasing to 1 to 1.5 metres by early evening.
Swell
Southwesterly 1 to 1.5 metres.
Weather
Cloudy. 60% chance of showers. The chance of a thunderstorm.

Saturday 1 August

Winds
East to southeasterly 15 to 25 knots easing to 10 to 15 knots inshore for a period in the afternoon.
Seas
1 to 1.5 metres, decreasing to 1 metre around midday.
Swell
Southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
Weather
Partly cloudy. 20% chance of a shower in the early morning.

Sunday 2 August

Winds
East to southeasterly 10 to 15 knots.
Seas
Around 1 metre, decreasing below 1 metre during the morning, then increasing to around 1 metre by early evening.
Swell
Southwesterly 1 to 1.5 metres.
Weather
Sunny.

Monday 3 August

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

Tuesday 4 August

Winds
Easterly 15 to 20 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell
Southwesterly 1 to 1.5 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.

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

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