View the current warnings for Western Australia
Forecast issued at 4:00 pm WST on Monday 25 September 2017.
Weather Situation
A low pressure system moving slowly across the southwest of the state will continue to contract to the east throughout Tuesday and Wednesday as a weak ridge of high pressure develops over central parts of the state. A cold front approaching from the southwest will move across Perth Local Waters during Thursday morning. A strong ridge of high pressure will develop across the south of the state in its wake.
Forecast for Monday until midnight
- Winds
- South to southeasterly 15 to 20 knots.
- Seas
- 1 to 1.5 metres.
- Swell
- Southwesterly 1.5 to 2 metres.
- Weather
- Partly cloudy. 40% chance of showers. The chance of a thunderstorm.
Tuesday 26 September
- Winds
- Southerly 15 to 20 knots.
- Seas
- 1 to 2 metres.
- Swell
- Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
- Weather
- Partly cloudy. 70% chance of showers.
Wednesday 27 September
- Winds
- South to southeasterly 10 to 15 knots becoming variable about 10 knots from sunrise, then becoming southwesterly 10 to 15 knots in the early afternoon.
- Seas
- Around 1 metre, decreasing below 1 metre during the morning.
- Swell
- Southwesterly 1 to 1.5 metres.
- Weather
- Cloudy. 80% chance of showers.
Thursday 28 September
- Winds
- Variable below 10 knots becoming southwesterly 10 to 15 knots from midday then tending southerly 15 to 20 knots during the afternoon.
- Seas
- Below 1 metre, increasing to around 1 metre during the evening.
- Swell
- Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres during the evening.
- Weather
- Partly cloudy. 95% chance of showers. The chance of a thunderstorm.
Friday 29 September
- Winds
- Southeasterly 15 to 20 knots becoming variable about 10 knots during the morning then becoming south to southwesterly 10 to 15 knots from early afternoon.
- Seas
- 1 to 1.5 metres, decreasing to 1 metre during the morning.
- Swell
- Southwesterly 1.5 to 2 metres.
- Weather
- 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.
- 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 am WST Tuesday.
Product IDW11400