Mosman Beach Weather Forecast

    • 17
    • 27

    Clear

    • 17
    • 30

    Sunny

    • 19
    • 27

    Sunny

    • 18
    • 31

    Mostly sunny

    • 17
    • 33

    Sunny

    • 22
    • 37

    Sunny morning. Possible storm

    • 24
    • 35

    Mostly sunny

Today 9 Dec Perth

Clear. Winds south to southwesterly 15 to 25 km/h turning southeasterly in the late evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
South to southwesterly 15 to 20 knots tending south to southeasterly in the late evening.
Seas
1.5 to 2 metres.
1st Swell
Southwesterly around 1 metre.
Weather
Clear.
Weather Situation
An inland trough will move closer to the west coast by the weekend where it is expected to deepen. The trough will move offshore on Sunday as a high pressure system moves into the Bight and strengthens.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mosman Beach Temperature Statistics View More

December Temperature

Swanbourne (7km)

  • Lowest 4 December, 2025

    14.6 °C

  • Average December

    20.8 °C

  • Highest 1 December, 2025

    38.4 °C

Climate (2020–Present)

Swanbourne (7km)

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  • Average Low 2020–2025

    14.5 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    24.3 °C
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