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

View the current warnings for Western Australia

Forecast issued at 7:01 am WST on Wednesday 2 September 2026.

Weather Situation

A trough is moving eastwards through the South Interior. A ridge has extends over the South West Land Division. Weak cold fronts will move over southern districts on Wednesday and Thursday, followed by a stronger front which will cross the South West Land Division during Saturday and Sunday.

Forecast for Wednesday until midnight

Winds
West to southwesterly 10 to 15 knots becoming south to southwesterly below 10 knots in the evening.
Seas
Below 1 metre.
Swell
Southwesterly 2.5 to 3 metres.
Weather
Cloudy. 60% chance of showers.

Thursday 3 September

Winds
West to southwesterly about 10 knots tending west to northwesterly 15 to 25 knots in the morning.
Seas
Below 1 metre, increasing to 1 to 2 metres around midday.
Swell
Southwesterly 3 metres.
Weather
Partly cloudy. 80% chance of showers.

Friday 4 September

Winds
West to southwesterly 20 to 30 knots becoming southwesterly 15 to 20 knots during the morning then becoming west to southwesterly about 10 knots during the afternoon.
Seas
1.5 to 2.5 metres, decreasing to 1 metre during the afternoon.
Swell
Southwesterly 3 metres, increasing to 3 to 5 metres during the morning.
Weather
Partly cloudy. 80% chance of showers.

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 pm WST Wednesday.

Product IDW11280