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 Monday 25 September 2017.

Weather Situation

A low pressure system moving slowly across the southwest of the state will continue to contract to the east throughout Tuesday and Wednesday as a weak ridge of high pressure develops over central parts of the state. A cold front approaching from the southwest will move across Perth Local Waters during Thursday morning. A strong ridge of high pressure will develop across the south of the state in its wake.

Forecast for Monday until midnight

Winds
South to southeasterly 15 to 20 knots.
Seas
1 to 1.5 metres.
Swell
Southwesterly 1.5 to 2 metres.
Weather
Partly cloudy. 40% chance of showers. The chance of a thunderstorm.

Tuesday 26 September

Winds
Southerly 15 to 20 knots.
Seas
1 to 2 metres.
Swell
Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
Weather
Partly cloudy. 70% chance of showers.

Wednesday 27 September

Winds
South to southeasterly 10 to 15 knots becoming variable about 10 knots from sunrise, then becoming southwesterly 10 to 15 knots in the early afternoon.
Seas
Around 1 metre, decreasing below 1 metre during the morning.
Swell
Southwesterly 1 to 1.5 metres.
Weather
Cloudy. 80% chance of showers.

Thursday 28 September

Winds
Variable below 10 knots becoming southwesterly 10 to 15 knots from midday then tending southerly 15 to 20 knots during the afternoon.
Seas
Below 1 metre, increasing to around 1 metre during the evening.
Swell
Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres during the evening.
Weather
Partly cloudy. 95% chance of showers. The chance of a thunderstorm.

Friday 29 September

Winds
Southeasterly 15 to 20 knots becoming variable about 10 knots during the morning then becoming south to southwesterly 10 to 15 knots from early afternoon.
Seas
1 to 1.5 metres, decreasing to 1 metre during the morning.
Swell
Southwesterly 1.5 to 2 metres.
Weather
Partly cloudy. 30% chance of a shower.

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 Tuesday.

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