Cottesloe Beach Weather Forecast

    • 12
    • 20

    Showers. Windy

    • 11
    • 19

    Cloudy

    • 12
    • 19

    Shower or two

    • 10
    • 19

    Partly cloudy

    • 9
    • 21

    Mostly sunny

    • 10
    • 21

    Shower or two

    • 9
    • 18

    Shower or two

Today 17 Aug Perth

Cloudy. Very high chance of showers, becoming less likely in the late afternoon and evening. The chance of a thunderstorm in the southwest in the morning. Winds north to northwesterly 25 to 40 km/h turning west to southwesterly 15 to 20 km/h during the afternoon and evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Northerly 15 to 20 knots, shifting west to southwesterly 15 to 25 knots in the middle of the day. Winds reaching up to 30 knots in the late morning and afternoon.
Seas
1.5 metres, increasing to 2 to 2.5 metres during the morning.
1st Swell
Westerly 2 to 3 metres.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning.
Weather Situation
A high pressure ridge over the west coast is weakening. Winds will freshen from the north this morning before a cold front brings a westerly change in the middle of the day. A weak ridge will extend across the west coast during Tuesday before another weak cold front passes by to the south during Wednesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cottesloe Beach Temperature Statistics View More

August Temperature

Swanbourne (4km)

  • Lowest 11 August, 2026

    5.1 °C

  • Average August

    13.7 °C

  • Highest 15 August, 2026

    24 °C

Climate (2021–2026)

Swanbourne (4km)

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  • Average Low 2021–2026

    14.5 °C

  • Average 2021–2026

    18.8 °C

  • Average High 2021–2026

    24.3 °C
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