Carnac Island Weather Forecast

    • 11
    • 22

    Partly cloudy

    • 11
    • 24

    Sunny

    • 13
    • 25

    Mostly sunny

    • 14
    • 23

    Partly cloudy

    • 12
    • 22

    Sunny

    • 9
    • 21

    Mostly sunny

    • 10
    • 22

    Partly cloudy

Today 18 May Perth

Partly cloudy. The chance of fog in the morning, mainly about the hills. Slight chance of a shower in the southwest, near zero chance elsewhere. Light winds.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Variable below 10 knots becoming southerly 10 to 15 knots in the late afternoon then tending southeasterly in the late evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres.
Weather
Partly cloudy.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Carnac Island Temperature Statistics View More

May Temperature

Garden Island (13km)

  • Lowest 17 May, 2026

    8.4 °C

  • Average May

    16.6 °C

  • Highest 11 May, 2026

    26.2 °C

Climate (2021–Present)

Garden Island (13km)

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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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