Carnac Island Weather Forecast

    • 14
    • 19

    Cloudy

    • 10
    • 21

    Sunny

    • 15
    • 21

    Showers easing

    • 14
    • 21

    Possible shower

    • 12
    • 23

    Sunny

    • 13
    • 23

    Partly cloudy

    • 15
    • 23

    Shower or two

Today 21 Apr Perth

Cloudy. Slight chance of a shower in the morning. Winds south to southwesterly 20 to 30 km/h becoming light in the late afternoon.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southwesterly 15 to 20 knots turning south to southeasterly below 10 knots in the early afternoon.
Seas
1.5 to 2 metres, decreasing below 1 metre around midday.
1st Swell
West to southwesterly 2 to 3 metres, increasing to 2.5 to 4 metres during the afternoon, then decreasing to 2.5 to 3 metres by early evening.
Weather
Cloudy.
Weather Situation
A cold front is moving east away from the local waters will a a new ridge following today. A second moderate cold front will arrive on Thursday.
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 20 April, 2026

    12 °C

  • Average April

    19.1 °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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