Twin Rocks Weather Forecast

    • 20
    • 27

    Sunny

    • 21
    • 27

    Mostly sunny

    • 21
    • 27

    Becoming windy. Sunny

    • 20
    • 27

    Sunny

    • 21
    • 27

    Sunny

    • 20
    • 25

    Sunny

    • 19
    • 24

    Windy. Sunny

Today 31 Dec Lower West

Sunny. Winds east to northeasterly 20 to 30 km/h shifting south to southwesterly in the late morning and early afternoon then tending south to southeasterly 15 to 20 km/h in the late evening. Daytime maximum temperatures in the low to mid 30s.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Easterly 10 to 15 knots becoming variable about 10 knots in the morning then becoming southerly 15 to 20 knots in the early afternoon.
Seas
Around 1 metre.
1st Swell
Southwesterly below 1 metre.
Weather
Sunny.
Weather Situation
A ridge sits along the south coast, driving a easterly airstream over the local waters. A trough developing down the west coast moves inland on Thursday or Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Twin Rocks Temperature Statistics View More

December Temperature

Rottnest Island (5km)

  • Lowest 21 December, 2025

    14.6 °C

  • Average December

    21.5 °C

  • Highest 25 December, 2025

    40.9 °C

Climate (2020–Present)

Rottnest Island (5km)

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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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