Forecast issued at 4:00 pm WST on Wednesday 29 March 2017.
A ridge of high pressure is developing south of the State, with a high pressure system moving into the Bight on Thursday. A weak cold front will brush the south coast Friday evening and Saturday morning.
Forecast for Wednesday until midnight
- Southeasterly 15 to 20 knots turning easterly in the evening.
- 1 to 1.5 metres, increasing to 1.5 to 2 metres offshore north of Cape Leeuwin.
- Southerly 5 to 6 metres. Inshore swell between Cape Naturaliste and Cape Leeuwin southwesterly between 3.5 and 4.5 metres.
- Mostly clear.
Thursday 30 March
- East to northeasterly 10 to 15 knots becoming variable below 10 knots in the morning then becoming south to southeasterly 10 to 15 knots in the early afternoon. Winds reaching up to 20 knots offshore north of Cape Leeuwin early in the morning and again in the evening.
- 1 to 1.5 metres, decreasing to 1 metre during the morning.
- Inshore swell between Cape Naturaliste and Cape Leeuwin southerly 3 to 4 metres shifting southwesterly 2.5 to 3 metres from early afternoon. Swell in remaining area southerly 4 to 5 metres, tending southwesterly 3 metres during the afternoon.
Friday 31 March
- Southeasterly 10 to 15 knots, increasing to 20 knots from late afternoon.
- Around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
- Southwesterly 2.5 to 3 metres, increasing to 3 to 4 metres offshore east of Cape Leeuwin during the morning.
- Cloudy. 40% chance of showers east of Cape Leeuwin, near zero chance elsewhere.
Saturday 1 April
- Easterly 15 to 20 knots. Inshore winds between Cape Naturaliste and Cape Leeuwin easing to about 10 knots from around 9am until late afternoon.
- 1 to 2 metres.
- South to southwesterly 2.5 to 3.5 metres, reaching up to 5 metres in southern offshore parts during the afternoon and evening.
- Partly cloudy. 30% chance of a shower.
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.
Nearby Coastal Waters
- This forecast is also available via scheduled broadcasts on marine radio.
- Latest Coastal Observations
- Tide Predictions
The next routine forecast will be issued at 4:00 am WST Thursday.