Rottnest Island Weather Forecast

    • 17
    • 23

    Windy. Clear

    • 17
    • 24

    Windy. Sunny

    • 18
    • 25

    Sunny

    • 19
    • 25

    Becoming windy. Sunny

    • 18
    • 27

    Windy. Sunny

    • 18
    • 29

    Sunny

    • 21
    • 31

    Mostly sunny

Today 8 Dec Lower West

Clear. Winds south to southwesterly 20 to 30 km/h.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southerly 20 to 25 knots.
Seas
2 metres.
1st Swell
Southwesterly below 1 metre.
Weather
Clear.
Weather Situation
A new ridge to the south of the Local Waters will persist through Tuesday, before a west coast trough deepens on Wednesday. The west coast trough will push inland on Thursday ahead of a new ridge approaching from the west.
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  • Temperature Forecast Bureau of Meteorology

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Rottnest Island Temperature Statistics View More

December Temperature

Rottnest Island (3km)

  • Lowest 4 December, 2025

    16.7 °C

  • Average December

    20.3 °C

  • Highest 1 December, 2025

    36.2 °C

Climate (2020–Present)

Rottnest Island (3km)

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  • Average Low 2020–2025

    16.1 °C

  • Average 2020–2025

    19 °C

  • Average High 2020–2025

    22.8 °C
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