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 Friday 26 June 2026.

Weather Situation

A ridge over southern WA is beginning to weaken. A cold front will cross the west coast early Friday, continuing gradually across the south coast later Friday into Saturday. A deep low pressure system trailing the front will pass south of the State during the weekend as a weak ridge develops across the west coast from Sunday.

Forecast for Friday until midnight

Strong Wind Warning for Friday for Perth Coast

Winds
Westerly 20 to 30 knots decreasing to 20 to 25 knots in the morning then tending northwesterly 20 to 30 knots in the early afternoon.
Seas
2.5 to 3 metres.
Swell
Southwesterly 2 to 3 metres, increasing to 3 to 4 metres during the afternoon.
Weather
Partly cloudy. 90% chance of showers. The chance of a thunderstorm in the afternoon and evening.

Saturday 27 June

Gale Warning for Saturday for Perth Coast

Winds
Northwesterly 25 to 30 knots tending westerly 30 to 35 knots before dawn then decreasing to 25 to 30 knots in the early morning.
Seas
2.5 to 3 metres.
Swell
Westerly 5 to 7 metres, tending southwesterly 4 to 5 metres around midday.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the early morning.

Sunday 28 June

Winds
Southwesterly 20 to 30 knots decreasing to 15 to 20 knots during the day.
Seas
1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the afternoon or evening.
Swell
Southwesterly 3 to 5 metres.
Weather
Cloudy. 95% 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 Friday.

Product IDW11280