View the current warnings for Western Australia
Forecast issued at 4:00 pm WST on Thursday 13 July 2017.
Weather Situation
A ridge of high pressure lies to the north with a broad SW'ly flow prevailing across Perth waters. The ridge will drift slowly southwards and on Friday a high is expected to form over the south of the State. The high will contract eastwards ahead of an approaching cold front, anticipated to reach Perth waters Saturday afternoon or evening. By Monday another ridge of high pressure will dominate the area.
Forecast for Thursday until midnight
- Winds
- South to southwesterly about 10 knots.
- Seas
- Below 1 metre.
- Swell
- Southwesterly 3 to 4 metres.
- Weather
- Cloudy.
Friday 14 July
- Winds
- Variable below 10 knots becoming north to northeasterly 10 to 15 knots early in the morning then turning northwesterly in the middle of the day.
- Seas
- Below 1 metre.
- Swell
- Southwesterly 2.5 to 4 metres, decreasing to 2 to 3 metres during the morning.
- Weather
- Cloudy. 30% chance of a shower in the morning and afternoon.
Saturday 15 July
- Winds
- Northwesterly 15 to 25 knots increasing to 30 knots during the morning Winds then turning west to southwesterly 20 to 25 knots from the south in the afternoon.
- Seas
- Around 1 metre, increasing to 2 to 3 metres during the morning.
- Swell
- Southwesterly 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning, then tending west to southwesterly 1.5 to 2.5 metres around midday.
- Weather
- Cloudy. 90% chance of showers. The chance of a thunderstorm in the afternoon.
Sunday 16 July
- Winds
- Southwesterly 15 to 20 knots turning south to southeasterly below 10 knots during the evening.
- Seas
- 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
- Swell
- Southwesterly 2 to 4 metres.
- Weather
- Cloudy. 40% chance of showers.
Monday 17 July
- Winds
- Northeasterly 10 to 15 knots.
- Seas
- Below 1 metre.
- Swell
- West to southwesterly 2 to 4 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 Friday.
Product IDW11400