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

View the current warnings for Western Australia

Forecast issued at 7:01 pm WST on Sunday 6 September 2026.

Weather Situation

A cold front moving along the south coast is weakening as it passes through the Esperance and Eucla coasts today. East to southeasterly winds will prevail over the coastal waters as a strong high develops in the Bight from Sunday night. The high will move east on Thursday as a west coast trough develops.

Forecast for Sunday until midnight

Winds
Southeasterly 20 to 25 knots.
Seas
2 metres.
Swell
Southwesterly 2.5 to 3 metres.
Weather
Clear.

Monday 7 September

Winds
Southeasterly 15 to 25 knots.
Seas
1 to 2 metres, decreasing to 1 metre during the morning, then increasing to 1.5 metres by early evening.
Swell
Southwesterly 3 to 4 metres, decreasing to 3 metres during the afternoon.
Weather
Partly cloudy.

Tuesday 8 September

Winds
Southeasterly 15 to 25 knots turning easterly 20 to 25 knots in the late evening.
Seas
1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
Swell
Southwesterly 3 metres, increasing to 3 to 4 metres during the morning, then decreasing to 3 metres by early evening.
Weather
Partly cloudy.

Wednesday 9 September

Winds
Easterly 15 to 25 knots.
Seas
1.5 to 2 metres, decreasing to 1 metre during the afternoon.
Swell
Southwesterly 2.5 to 3 metres.
Weather
Sunny.

Please be awareWind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height.

Nearby Coastal Waters

NT - Beagle Bonaparte Gulf Coastal Waters Forecast WA - North Kimberley - Coastal Waters Forecast WA - West Kimberley - Coastal Waters Forecast WA - Pilbara Coast East - Coastal Waters Forecast WA - Pilbara Coast West - Coastal Waters Forecast WA - Ningaloo Coast - Coastal Waters Forecast WA - Gascoyne Coast - Coastal Waters Forecast WA - Geraldton Coast - Coastal Waters Forecast WA - Lancelin Coast - Coastal Waters Forecast WA - Melville Local Waters Forecast WA - Perth Local Waters Forecast WA - Perth Coast- Coastal Waters Forecast WA - Bunbury Geographe Coast - Coastal Waters Forecast SA - Far West Coast - Coastal Waters Forecast WA - Leeuwin Coast - Coastal Waters Forecast WA - Albany Coast - Coastal Waters Forecast WA - Esperance Coast - Coastal Waters Forecast WA - Eucla Coast - Coastal Waters Forecast

The next routine forecast will be issued at 1:01 am WST Monday.

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