Porpoise Bay Weather Forecast

    • 10
    • 17

    Clear

    • 11
    • 17

    Sunny

    • 12
    • 18

    Sunny

    • 12
    • 18

    Sunny

    • 13
    • 19

    Shower or two

    • 13
    • 18

    Shower or two

    • 13
    • 18

    Shower or two

Today 30 Aug Lower West

Clear. Light winds.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
South to southeasterly about 10 knots.
Seas
Below 0.5 metres.
1st Swell
Southwesterly below 1 metre.
Weather
Clear.
Weather Situation
A ridge nearby is moving east. A weak cold front will brush past the southwest coast on Monday, as a west coast trough develops. The trough will move inland on Tuesday, ahead of another cold front on Wednesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Porpoise Bay Temperature Statistics View More

August Temperature

Rottnest Island (3km)

  • Lowest 26 August, 2025

    7.6 °C

  • Average August

    15 °C

  • Highest 13 August, 2025

    22.4 °C

Climate (2020–Present)

Rottnest Island (3km)

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  • Average Low 2020–2025

    16.1 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    22.8 °C
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