Third Rocks Weather Forecast

    • 15
    • 20

    Showers developing

    • 11
    • 17

    Partly cloudy

    • 11
    • 18

    Shower or two

    • 13
    • 18

    Showers

    • 15
    • 17

    Shower or two

    • 12
    • 18

    Showers

    • 12
    • 20

    Shower or two

Today 31 Aug Perth

Cloudy. The chance of fog in the early morning, mainly about the hills. High chance of showers. Light winds becoming westerly 20 to 30 km/h in the morning then turning south to southwesterly 15 to 25 km/h in the late evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
West to southwesterly below 10 knots tending west to northwesterly 15 to 20 knots in the morning then turning south to southwesterly in the evening.
Seas
Below 0.5 metres, increasing to around 1 metre during the morning.
1st Swell
West to southwesterly 1.5 to 2 metres.
Weather
Partly cloudy. 90% chance of showers.
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

    15 °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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