Third Rocks Weather Forecast

    • 10
    • 21

    Clear

    • 13
    • 21

    Partly cloudy

    • 11
    • 21

    Sunny

    • 13
    • 22

    Partly cloudy

    • 15
    • 22

    Sunny

    • 17
    • 20

    Showers easing

    • 15
    • 20

    Showers

Today 7 Sep Perth

Clear. Winds southeasterly 15 to 20 km/h.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southerly 15 to 20 knots tending southeasterly in the evening.
Seas
Around 1 metre.
1st Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Clear.
Weather Situation
A high in the Bight is directing southeasterly winds across the Local Waters. Winds tending easterly on Wednesday as the high starts to move away, with a trough developing near the west coast on Thursday. A cold front will approach Local Waters on Friday evening.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Third Rocks Temperature Statistics View More

September Temperature

Garden Island (8km)

  • Lowest 1 September, 2026

    10.2 °C

  • Average September

    15.4 °C

  • Highest 5 September, 2026

    18.7 °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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