Perth Coastal Waters Forecast: Two Rocks to Dawesville, offshore from Rottnest Island

View the current warnings for Western Australia

Forecast issued at 10:00 pm WST on Thursday 18 April 2019.

Weather Situation

An approaching strong cold front reaches the southwest capes tonight crossing the west coast during the evening and early Friday morning. It will continue moving east and in its wake a ridge develops during Saturday and Sunday.

Forecast for Thursday until midnight

Strong Wind Warning for Thursday for Perth Coast

Winds
Westerly 25 to 30 knots.
Seas
2 to 2.5 metres.
Swell
Southwesterly 2 to 2.5 metres.
Weather
Partly cloudy.

Friday 19 April

Gale Warning for Friday for Perth Coast

Winds
Westerly 25 to 30 knots tending southwesterly 30 to 35 knots before dawn then decreasing to 25 to 30 knots in the morning. Squalls to 50 knots possible in showers and thunderstorms.
Seas
2 to 4 metres.
Swell
Southwesterly 2 to 3 metres, increasing to 3 to 5 metres during the morning.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning and afternoon. Possible hail.
Caution
Dangerous surf conditions hazardous for coastal activities such as swimming, surfing and rock fishing.

Saturday 20 April

Winds
South to southwesterly 25 to 30 knots tending south to southeasterly 10 to 15 knots during the morning and early afternoon.
Seas
2 to 3 metres, decreasing below 1.5 metres during the morning, then decreasing below 1 metre around midday.
Swell
Southwesterly 3 to 5 metres.
Weather
Cloudy. 80% chance of showers. The chance of a thunderstorm in the early morning.
Caution
Dangerous surf conditions hazardous for coastal activities such as swimming, surfing and rock fishing, easing during the day.

Sunday 21 April

Winds
Southeasterly 10 to 15 knots turning east to northeasterly during the morning then becoming east to southeasterly about 10 knots during the afternoon.
Seas
Below 1 metre.
Swell
Southwesterly 3 to 4 metres, decreasing to 2 to 3 metres during the morning.
Weather
Mostly sunny.

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.

Nearby Coastal Waters

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

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