Third Rocks Weather Forecast

    • 13
    • 22

    Sunny

    • 15
    • 20

    Showers

    • 12
    • 17

    Partly cloudy

    • 11
    • 17

    Cloudy

    • 13
    • 19

    Showers

    • 13
    • 16

    Shower or two

    • 12
    • 18

    Showers

Today 30 Aug Perth

Partly cloudy. Winds easterly 15 to 20 km/h tending northeasterly in the middle of the day then becoming light in the early afternoon.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
East to southeasterly about 10 knots becoming south to southwesterly in the middle of the day.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres during the morning.
Weather
Sunny.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Third Rocks Temperature Statistics View More

August Temperature

Garden Island (8km)

  • Lowest 11 August, 2026

    7.7 °C

  • Average August

    14.9 °C

  • Highest 16 August, 2026

    23.7 °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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