Third Rocks Weather Forecast

    • 9
    • 17

    Mostly sunny

    • 9
    • 17

    Sunny

    • 9
    • 17

    Mostly sunny

    • 9
    • 18

    Becoming cloudy

    • 11
    • 17

    Shower or two

    • 10
    • 17

    Possible shower

    • 9
    • 18

    Partly cloudy

Today 22 Jul Perth

Partly cloudy. Winds east to southeasterly 15 to 20 km/h becoming light in the late afternoon.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southeasterly 10 to 15 knots tending easterly in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure centre over waters west of the state extends a ridge over southern WA. The ridge will persist over the region for the remainder of the week as the high pressure centre slowly moves east. A cold front will then cross the local waters late Saturday into Sunday.
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  • 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

    14.9 °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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