View the current warnings for Western Australia
Forecast updated at 7:57 am WST on Sunday 14 December 2025.
Weather Situation
A west coast trough will move offshore today and a weak low pressure system will develop within the trough, as a high pressure system strengthens in the Bight. The high will move east on Monday, allowing the trough to return to the west coast. The trough will move inland ahead of a cold front brushing the south coast on Tuesday. A new ridge will build across the southwest coast from Wednesday.
Forecast for Sunday until midnight
- Winds
- Easterly 10 to 15 knots tending southeasterly in the middle of the day then turning east to northeasterly in the early afternoon.
- Seas
- Around 1 metre.
- Swell
- Southwesterly around 1 metre.
- Weather
- Partly cloudy. The chance of a thunderstorm in the morning and afternoon.
Monday 15 December
- Winds
- North to northeasterly 10 to 15 knots becoming variable about 10 knots in the early morning.
- Seas
- Below 1 metre.
- Swell
- Southwesterly around 1 metre.
- Weather
- Sunny morning. The chance of a thunderstorm in the early afternoon.
Tuesday 16 December
- Winds
- Southwesterly below 10 knots increasing to 10 to 15 knots during the morning.
- Seas
- Below 1 metre.
- Swell
- West to southwesterly around 1 metre.
- Weather
- Partly cloudy.
Wednesday 17 December
- Winds
- South to southwesterly 15 to 20 knots.
- Seas
- Around 1 metre, increasing to 1 to 1.5 metres during the afternoon or evening.
- Swell
- West to southwesterly 1 to 1.5 metres.
- 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.
- 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 Sunday.
Product IDW11400