View the current warnings for Western Australia
Forecast issued at 1:01 pm WST on Thursday 17 September 2026.
Weather Situation
A trough extends down the west coast. The trough will move inland today ahead of a cold front which will pass over the local waters on Friday before the next ridge begins to develop Saturday.
Forecast for Thursday until midnight
- Winds
- Northwesterly 10 to 15 knots becoming northerly about 10 knots in the late evening.
- Seas
- Below 1 metre.
- Swell
- West to southwesterly 1 to 1.5 metres.
- Weather
- Partly cloudy.
Friday 18 September
Strong Wind Warning for Friday for Perth Local Waters
- Winds
- Northerly 10 to 15 knots turning west to northwesterly 15 to 25 knots in the early afternoon. Winds reaching up to 30 knots in the late evening.
- Seas
- Around 1 metre.
- Swell
- West to southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres during the morning.
- Weather
- Partly cloudy. 90% chance of showers. The chance of a thunderstorm in the evening.
Saturday 19 September
- Winds
- West to northwesterly 25 to 30 knots tending west to southwesterly 10 to 15 knots during the day.
- Seas
- 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres around midday.
- Swell
- Westerly 1.5 to 2.5 metres, increasing to 2.5 to 4 metres during the morning.
- Weather
- Partly cloudy. 90% chance of showers.
Sunday 20 September
- Winds
- Southwesterly 10 to 15 knots becoming variable about 10 knots during the morning.
- Seas
- Below 1 metre.
- Swell
- West to southwesterly 2 to 3 metres.
- Weather
- Cloudy.
Monday 21 September
- Winds
- East to southeasterly below 10 knots becoming southwesterly during the morning then increasing to 10 to 15 knots during the afternoon.
- Seas
- Below 1 metre.
- Swell
- Southwesterly 2 to 2.5 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.
- 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 7:01 pm WST Thursday.
Product IDW11400