Swan River - Mounts Bay Weather Forecast

    • 14
    • 29

    Sunny

    • 17
    • 31

    Sunny

    • 18
    • 36

    Sunny

    • 21
    • 39

    Sunny

    • 25
    • 40

    Partly cloudy

    • 23
    • 32

    Partly cloudy

    • 18
    • 30

    Sunny

Today 21 Dec Perth

Sunny. Patchy smoke haze in the northwest in the early morning. Winds easterly 20 to 30 km/h shifting south to southwesterly 25 to 35 km/h in the early afternoon then becoming southerly 15 to 20 km/h in the late evening.

Melville Waters

Wind
East to southeasterly below 10 knots tending southwesterly 10 to 15 knots in the early afternoon then tending southerly in the evening.
Weather
Sunny.
Weather Situation
A ridge over local waters will strengthen tomorrow. A weak front will brush the south coast on Monday, followed by the west coast trough returning by Tuesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Swan River - Mounts Bay Temperature Statistics View More

December Temperature

Perth Metro (6km)

  • Lowest 4 December, 2025

    14.6 °C

  • Average December

    23.4 °C

  • Highest 14 December, 2025

    40.1 °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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