Carnac Island Weather Forecast

    • 16
    • 21

    Partly cloudy

    • 13
    • 21

    Partly cloudy

    • 13
    • 22

    Showers increasing. Windy

    • 14
    • 19

    Shower or two. Wind easing

    • 11
    • 20

    Cloudy

    • 15
    • 21

    Showers

    • 15
    • 21

    Shower or two

Today 18 Apr Perth

Partly cloudy. Medium chance of showers about the northern suburbs, slight chance elsewhere. Winds southwesterly 15 to 25 km/h becoming light in the early morning.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southwesterly 15 to 20 knots turning southerly below 10 knots during the day.
Seas
1 to 1.5 metres, decreasing below 1 metre during the morning.
1st Swell
Westerly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning, then tending west to southwesterly 2 to 2.5 metres around midday.
Weather
Partly cloudy.
Weather Situation
A ridge is developing today over southern parts ahead of the next cold front Monday night.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Carnac Island Temperature Statistics View More

April Temperature

Garden Island (13km)

  • Lowest 8 April, 2026

    13.1 °C

  • Average April

    19.3 °C

  • Highest 3 April, 2026

    28.7 °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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