Carnac Island Weather Forecast

    • 11
    • 20

    Partly cloudy

    • 11
    • 21

    Sunny

    • 12
    • 20

    Partly cloudy

    • 13
    • 19

    Shower or two

    • 11
    • 21

    Partly cloudy

    • 12
    • 23

    Mostly sunny

    • 13
    • 25

    Sunny

Today 21 Oct Perth

Partly cloudy. Winds southerly 15 to 20 km/h tending southwesterly 15 to 25 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
Southerly 15 to 25 knots, reaching up to 30 knots early in the morning.
Seas
1 to 1.5 metres, decreasing below 1 metre during the morning.
1st Swell
Southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres by early evening.
Weather
Cloud clearing.
Weather Situation
A ridge extends over Perth and Melville before a cold front approaches late Thursday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Carnac Island Temperature Statistics View More

October Temperature

Garden Island (13km)

  • Lowest 2 October, 2025

    9.4 °C

  • Average October

    16.7 °C

  • Highest 17 October, 2025

    26.3 °C

Climate (2020–Present)

Garden Island (13km)

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  • Average Low 2020–2025

    15.1 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    23.3 °C
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