View the current warnings for Western Australia
Forecast issued at 4:00 am WST on Wednesday 12 December 2018.
Weather Situation
A dissipating cold front will push north of Perth this morning with a ridge of high pressure developing rapidly in its wake this afternoon. By Thursday, the high pressure system will be well established over the Bight with another trough developing down the west coast. The trough will move inland during Friday evening.
Forecast for Wednesday until midnight
- Winds
- South to southeasterly 10 to 15 knots increasing to south to southwesterly 15 to 20 knots around midday, reaching up to 25 knots along the coastal fringe in the afternoon. Winds turning east to southeasterly below 10 knots in the late evening.
- Seas
- Around 1 metre, increasing to 1.5 to 2 metres during the afternoon.
- Swell
- Southwesterly 1.5 to 2.5 metres.
- Weather
- Cloud clearing.
Thursday 13 December
- Winds
- Easterly 15 to 20 knots becoming variable about 10 knots in the morning then becoming south to southwesterly 15 to 20 knots in the early afternoon.
- Seas
- Around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
- Swell
- Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
- Weather
- Sunny.
Friday 14 December
- Winds
- Variable about 10 knots becoming southerly 15 to 20 knots during the day.
- Seas
- Around 1 metre, increasing to 1 to 2 metres during the afternoon or evening.
- Swell
- Southwesterly 1 to 1.5 metres.
- Weather
- Mostly sunny.
Saturday 15 December
- Winds
- Southerly 15 to 25 knots increasing to 25 to 30 knots during the day.
- Seas
- 1 to 2 metres, increasing to 2.5 to 3 metres during the afternoon.
- Swell
- Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
- Weather
- Partly cloudy. The chance of a thunderstorm in the morning and afternoon.
Please be awareWind gusts can be 40 percent stronger than the averages given here, and maximum waves may be up to twice the height. Wind warnings are issued for today and tomorrow and describe the highest category of wind warning for that day.
- 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 4:00 pm WST Wednesday.
Product IDW11400