Postans Weather Forecast

    • 16
    • 24

    Partly cloudy

    • 14
    • 24

    Sunny

    • 15
    • 23

    Mostly sunny

    • 15
    • 26

    Sunny

    • 16
    • 26

    Sunny

    • 17
    • 27

    Sunny

    • 18
    • 28

    Sunny

Today 3 Dec Perth

Mostly sunny. Winds south to southwesterly 15 to 20 km/h becoming light in the early morning then becoming southwesterly 20 to 30 km/h in the morning.

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Postans Temperature Statistics View More

December Temperature

Garden Island (12km)

  • Lowest 2 December, 2025

    20.3 °C

  • Average December

    23.1 °C

  • Highest 1 December, 2025

    36.8 °C

Climate (2020–Present)

Garden Island (12km)

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  • Average Low 2020–2025

    15.1 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    23.4 °C
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