Third Rocks Weather Forecast

    • 10
    • 23

    Partly cloudy

    • 14
    • 20

    Showers

    • 12
    • 19

    Showers easing

    • 11
    • 19

    Shower or two

    • 12
    • 21

    Shower or two

    • 12
    • 21

    Partly cloudy

    • 11
    • 23

    Sunny

Today 13 May Perth

Partly cloudy. Light winds.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southwesterly about 10 knots.
Seas
Below 1 metre.
1st Swell
West to southwesterly 2.5 to 3 metres.
Weather
Partly cloudy.
Weather Situation
A ridge is weakening over the local waters. A weak cold front will move through tonight, followed by further cold fronts brushing past the south coast on Thursday night into Friday and again on Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Third Rocks Temperature Statistics View More

May Temperature

Garden Island (8km)

  • Lowest 2 May, 2026

    10.1 °C

  • Average May

    16.8 °C

  • Highest 11 May, 2026

    26.2 °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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