Twin Rocks Weather Forecast

    • 19
    • 26

    Windy. Clear

    • 18
    • 26

    Very windy. Cloud clearing

    • 15
    • 25

    Windy. Sunny

    • 17
    • 26

    Windy. Sunny

    • 19
    • 27

    Sunny

    • 22
    • 31

    Sunny

    • 24
    • 31

    Sunny

Today 19 Dec Lower West

Mostly clear. The chance of a thunderstorm in the north. Winds south to southwesterly 25 to 35 km/h.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southerly 20 to 25 knots, reaching up to 30 knots in the late evening.
Seas
2 metres.
1st Swell
Below 0.5 metres.
Weather
Clear.
Weather Situation
A west coast trough will move inland on Saturday, followed by a strengthening ridge. Another weak front will brush the south coast on Monday, followed by the west coast trough returning by Tuesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Twin Rocks Temperature Statistics View More

December Temperature

Rottnest Island (5km)

  • Lowest 18 December, 2025

    16.5 °C

  • Average December

    21.5 °C

  • Highest 14 December, 2025

    37.1 °C

Climate (2020–Present)

Rottnest Island (5km)

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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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