Swan River - Heirisson Island Weather Forecast

    • 16
    • 25

    Mostly sunny

    • 13
    • 26

    Sunny

    • 13
    • 24

    Mostly sunny

    • 14
    • 28

    Sunny

    • 15
    • 29

    Sunny

    • 15
    • 28

    Sunny

    • 17
    • 30

    Sunny

Today 3 Dec Perth

Mostly sunny. Winds southerly 15 to 20 km/h tending southwesterly 20 to 30 km/h in the morning then becoming light in the late evening.

Melville Waters

Wind
South to southwesterly about 10 knots increasing to 10 to 15 knots in the middle of the day.
Weather
Mostly sunny.
Weather Situation
A new high pressure ridge will develop south of the Local Waters area on Wednesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Swan River - Heirisson Island Temperature Statistics View More

December Temperature

Perth Metro (5km)

  • Lowest 1 December, 2025

    16.4 °C

  • Average December

    24.9 °C

  • Highest 1 December, 2025

    39 °C

Climate (2020–Present)

Perth Metro (5km)

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  • Average Low 2020–2025

    13.4 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    25.5 °C
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