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

View the current warnings for Western Australia

Forecast issued at 4:05 pm WST on Thursday 17 August 2017.

Weather Situation

A ridge of high pressure lies across central parts of the State. A cold front is approaching from the the southwest and will cross the southwest corner and Lower West coast during Friday.

Forecast for Thursday until midnight

Winds
Northwesterly 15 to 20 knots.
Seas
1 to 1.5 metres.
Swell
Southwesterly 2 to 3 metres.
Weather
Partly cloudy. 30% chance of a shower.

Friday 18 August

Winds
Northerly 15 to 25 knots turning west to northwesterly below 10 knots in the late afternoon.
Seas
1 to 2 metres, decreasing to 1 metre during the afternoon.
Swell
Southwesterly 2 to 3 metres.
Weather
Partly cloudy. 90% chance of showers. A thunderstorm likely in the late afternoon and evening.

Saturday 19 August

Winds
Variable below 10 knots becoming westerly 15 to 20 knots before dawn then tending southwesterly 15 to 25 knots in the early afternoon.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres during the afternoon.
Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Cloudy. Near 100% chance of showers. A thunderstorm likely in the morning and early afternoon.

Sunday 20 August

Winds
Southerly 15 to 25 knots decreasing to about 10 knots during the afternoon.
Seas
1.5 to 2.5 metres, decreasing below 1 metre during the afternoon.
1st Swell
Southwesterly 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the afternoon.
2nd Swell
West to northwesterly 1 to 2 metres, decreasing below 0.5 metres during the morning.
Weather
Cloudy. 60% chance of showers.

Monday 21 August

Winds
Southwesterly about 10 knots.
Seas
Below 1 metre.
Swell
Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
Weather
Cloudy. 40% chance of showers.

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 Friday.

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