Swan River - Rocky Bay Weather Forecast

    • 17
    • 29

    Sunny

    • 18
    • 33

    Sunny

    • 21
    • 40

    Sunny

    • 25
    • 39

    Sunny

    • 21
    • 27

    Partly cloudy

    • 16
    • 26

    Cloud clearing

    • 15
    • 27

    Becoming windy. Sunny

Today 22 Dec Perth

Sunny. Winds southeasterly 20 to 30 km/h tending southeast to southwesterly 25 to 35 km/h in the early afternoon then becoming southeasterly 15 to 25 km/h in the late evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southerly 15 to 25 knots tending southeasterly before dawn then tending southeast to southwesterly 15 to 25 knots in the morning.
Seas
1 to 2 metres, decreasing to 1 metre during the morning, then increasing to 1.5 metres during the afternoon.
1st Swell
Southwesterly around 1 metre, increasing to 1 to 1.5 metres during the morning.
Weather
Sunny.
Weather Situation
A ridge persists over local waters. A weak front will brush the south coast today, followed by the west coast trough returning by Tuesday.
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  • Temperature Forecast Bureau of Meteorology

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Swan River - Rocky Bay Temperature Statistics View More

December Temperature

Swanbourne (7km)

  • Lowest 21 December, 2025

    13.9 °C

  • Average December

    22.3 °C

  • Highest 14 December, 2025

    41.1 °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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