Third Rocks Weather Forecast

    • 12
    • 17

    Partly cloudy

    • 9
    • 16

    Shower or two

    • 10
    • 16

    Morning shower or two

    • 8
    • 17

    Partly cloudy

    • 9
    • 18

    Sunny

    • 9
    • 18

    Sunny

    • 11
    • 19

    Shower or two

Today 19 Jul Perth

Mostly sunny. Slight chance of a shower. Light winds.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Variable below 10 knots.
Seas
Below 0.5 metres.
1st Swell
West to southwesterly 2 to 3 metres.
Weather
Partly cloudy.
Weather Situation
A ridge is developing over the area with a weak cold front moving along the south coast south of the ridge later Monday into Tuesday. The ridge will then move south and strengthen in the wake of the cold front.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Third Rocks Temperature Statistics View More

July Temperature

Garden Island (8km)

  • Lowest 8 July, 2026

    7 °C

  • Average July

    15.2 °C

  • Highest 15 July, 2026

    22.8 °C

Climate (2021–2026)

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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