Swan River - Pier 21 Marina Weather Forecast

    • 19
    • 24

    Becoming windy. Cloudy

    • 14
    • 23

    Becoming windy. Partly cloudy

    • 15
    • 27

    Becoming windy. Sunny

    • 16
    • 30

    Sunny

    • 16
    • 30

    Sunny

    • 19
    • 33

    Sunny

    • 21
    • 30

    Mostly sunny

Today 26 Dec Perth

Cloudy. Slight chance of a shower in the morning and early afternoon. Winds west to southwesterly 20 to 30 km/h tending south to southwesterly 25 to 40 km/h during the day.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southwesterly 15 to 25 knots turning southerly 20 to 25 knots in the evening. Winds reaching up to 30 knots in the evening.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres during the afternoon.
1st Swell
West to southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres during the afternoon.
Weather
Partly cloudy.
Weather Situation
A ridge across southern WA is moving east, while an offshore trough is moving onshore ahead of a weak cold front brushing the south coast today. A new ridge will develop along the southwest coast later today and expand east along the south coast on the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Swan River - Pier 21 Marina Temperature Statistics View More

December Temperature

Swanbourne (8km)

  • Lowest 21 December, 2025

    13.9 °C

  • Average December

    22.9 °C

  • Highest 14 December, 2025

    41.1 °C

Climate (2020–Present)

Swanbourne (8km)

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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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