Perth Local Waters Forecast: Two Rocks to Dawesville, inshore from Rottnest Island

View the current warnings for Western Australia

Forecast issued at 10:00 am WST on Saturday 8 August 2020.

Weather Situation

A strong cold front will approach the west coast later on Saturday and move through local waters Sunday morning with a period of strong to gale force winds expected. In the wake of the front on Sunday a gusty, showery west to southwesterly flow will persist through the early part of next week.

Forecast for Saturday until midnight

Strong Wind Warning for Saturday for Perth Local Waters

Winds
Northeasterly 20 to 30 knots decreasing to 20 to 25 knots in the early afternoon then increasing to 20 to 30 knots in the evening.
Seas
1.5 to 2.5 metres.
Swell
Southwesterly 1 to 1.5 metres.
Weather
Partly cloudy.

Sunday 9 August

Gale Warning for Sunday for Perth Local Waters

Winds
Northeasterly 20 to 30 knots, reaching up to 35 knots during the morning. Winds turning northwesterly 25 to 30 knots in the middle of the day.
Seas
1.5 to 2.5 metres, increasing to 2 to 4 metres during the morning.
1st Swell
Northwesterly around 1 metre, increasing to 1.5 to 2.5 metres around midday.
2nd Swell
Southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the morning, then tending west to southwesterly 1 to 1.5 metres around midday.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm.

Monday 10 August

Winds
Westerly 20 to 30 knots.
Seas
2.5 to 3 metres.
Swell
Westerly 2 to 3 metres, increasing to 3 to 5 metres during the morning.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm. Caution: Dangerous surf conditions hazardous for coastal activities such as swimming, surfing and rock fishing. Tides likely to rise above the normal high tide mark.

Tuesday 11 August

Winds
Southwesterly 20 to 30 knots easing to 20 to 25 knots during the morning.
Seas
2 to 3 metres, decreasing to 1.5 to 2 metres during the afternoon.
Swell
West to southwesterly 3 to 5 metres.
Weather
Cloudy. 80% chance of showers.

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.

The next routine forecast will be issued at 4:00 pm WST Saturday.

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