Third Rocks Weather Forecast

    • 13
    • 21

    Partly cloudy

    • 12
    • 22

    Mostly sunny

    • 14
    • 21

    Shower or two

    • 15
    • 19

    Showers

    • 12
    • 18

    Shower or two

    • 15
    • 19

    Shower or two

    • 12
    • 19

    Partly cloudy

Today 5 Oct Perth

Partly cloudy. Light winds becoming southwesterly 15 to 20 km/h in the middle of the day then becoming light in the evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southwesterly below 10 knots becoming south to southeasterly in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Partly cloudy.
Weather Situation
A weak ridge extending over the local waters will move east on Monday as a weak cold front brushes past the southwest coast. A trough will extend along the west coast on Tuesday, moving inland on Wednesday ahead of an approaching cold front. A series of cold fronts will then cross southwest WA in the second half of the week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Third Rocks Temperature Statistics View More

October Temperature

Garden Island (8 km)

  • Lowest 2 October, 2026

    9.9 °C

  • Average October

    16 °C

  • Highest 2 October, 2026

    21.8 °C

Climate (2021–2026)

Garden Island (8 km)

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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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