Swan River - Mounts Bay Weather Forecast

    • 16
    • 29

    Sunny

    • 17
    • 33

    Sunny

    • 19
    • 31

    Sunny

    • 18
    • 33

    Sunny

    • 17
    • 36

    Sunny

    • 22
    • 39

    Mostly sunny

    • 24
    • 36

    Partly cloudy

Today 9 Dec Perth

Sunny. Winds southeasterly 15 to 20 km/h tending southwesterly 25 to 35 km/h in the middle of the day then tending southeasterly 20 to 30 km/h in the late evening.

Melville Waters

Wind
South to southeasterly below 10 knots tending southwesterly 15 to 20 knots in the middle of the day then becoming variable about 10 knots in the evening.
Weather
Sunny.
Weather Situation
A new ridge to the south of the Local Waters will persist through Tuesday, before a west coast trough deepens on Wednesday. The west coast trough will push inland on Thursday ahead of a new ridge approaching from the west.
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  • Temperature Forecast Bureau of Meteorology

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Swan River - Mounts Bay Temperature Statistics View More

December Temperature

Perth Metro (6km)

  • Lowest 4 December, 2025

    14.6 °C

  • Average December

    21.5 °C

  • Highest 1 December, 2025

    39 °C

Climate (2020–Present)

Perth Metro (6km)

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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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