Third Rocks Weather Forecast

    • 19
    • 27

    Shower or two

    • 19
    • 23

    Shower or two clearing

    • 13
    • 25

    Becoming windy. Sunny

    • 16
    • 30

    Sunny

    • 20
    • 32

    Sunny

    • 21
    • 34

    Sunny

    • 21
    • 36

    Sunny

Today 25 Jan Perth

Partly cloudy. Medium chance of showers. Winds westerly 20 to 30 km/h becoming light in the evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Northwesterly 10 to 15 knots tending westerly in the early afternoon.
Seas
Below 1 metre.
1st Swell
West to southwesterly 1.5 to 2.5 metres.
Weather
Partly cloudy.
Weather Situation
Westerly winds prevail as a cold front approaches, then tending southwesterly in the wake of the front on Monday. A ridge develops south of the State from Tuesday, before a west coast trough returns on Wednesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Third Rocks Temperature Statistics View More

January Temperature

Garden Island (8km)

  • Lowest 18 January, 2026

    15.3 °C

  • Average January

    22.9 °C

  • Highest 21 January, 2026

    38.9 °C

Climate (2021–Present)

Garden Island (8km)

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  • Average Low 2021–2026

    15.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    23.3 °C
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