No warnings for Western Australia
Forecast issued at 7:01 am WST on Thursday 20 August 2026.
Weather Situation
A weak ridge lies across southern WA. A trough will deepen down the west coast from late Friday, moving inland later on Saturday ahead of another weak cold front which is slated to reach the lower west coast on Sunday. As the trough moves inland a new ridge will begin to strengthen across the west coast.
Forecast for Thursday until midnight
- Winds
- Westerly 10 to 15 knots, reaching up to 20 knots offshore east of Cape Leeuwin during the morning. Winds decreasing to about 10 knots in the evening.
- Seas
- Around 1 metre.
- Swell
- Southwesterly 4 to 5 metres.
- Weather
- Cloudy.
Friday 21 August
- Winds
- Variable about 10 knots.
- Seas
- Below 1 metre.
- Swell
- Southwesterly 3 to 4 metres.
- Weather
- Partly cloudy.
Saturday 22 August
- Winds
- Variable about 10 knots becoming west to southwesterly 10 to 15 knots during the day.
- Seas
- Below 1 metre.
- Swell
- Southwesterly 3 to 4 metres, decreasing to 2.5 to 3 metres during the morning.
- Weather
- Partly cloudy.
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
- See detailed wind and wave forecasts on MetEye
- This forecast is also available via scheduled broadcasts on marine radio.
- Latest Coastal Observations
- Tide Predictions
- Marine Knowledge Centre - explanations and definitions
The next routine forecast will be issued at 1:01 pm WST Thursday.
Product IDW11300