Third Rocks Weather Forecast

    • 15
    • 20

    Cloudy

    • 12
    • 20

    Partly cloudy

    • 13
    • 21

    Partly cloudy

    • 16
    • 22

    Shower or two

    • 15
    • 19

    Shower or two

    • 12
    • 19

    Shower or two

    • 11
    • 19

    Partly cloudy

Today 18 Oct Perth

Cloudy. Winds west to southwesterly 20 to 30 km/h becoming light in the late evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Westerly 10 to 15 knots turning southwesterly in the early afternoon.
Seas
Around 1 metre.
1st Swell
West to southwesterly 2 to 2.5 metres.
Weather
Cloudy.
Weather Situation
A ridge builds in the wake of a cold front that passed Sunday morning. Another cold front is approaching on Tuesday, crossing the local waters late Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Third Rocks Temperature Statistics View More

October Temperature

Garden Island (8 km)

  • Lowest 2 October, 2026

    9.9 °C

  • Average October

    16.9 °C

  • Highest 14 October, 2026

    29.7 °C

Climate (2021–2026)

Garden Island (8 km)

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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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