The Brothers Weather Forecast

    • 15
    • 25

    Sunny

    • 15
    • 25

    Sunny

    • 16
    • 26

    Becoming windy. Sunny

    • 16
    • 28

    Sunny

    • 17
    • 31

    Sunny

    • 21
    • 31

    Becoming windy. Sunny

    • 18
    • 29

    Sunny

Today 6 Dec Perth

Sunny. Winds south to southeasterly 15 to 20 km/h tending east to southeasterly in the early morning then turning south to southwesterly 20 to 30 km/h in the late morning.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
South to southeasterly 15 to 20 knots decreasing to about 10 knots in the morning then tending south to southwesterly 15 to 20 knots in the middle of the day.
Seas
1 to 2 metres, decreasing below 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the morning.
Weather
Sunny.
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The Brothers Temperature Statistics View More

December Temperature

Garden Island (9km)

  • Lowest 4 December, 2025

    16.4 °C

  • Average December

    20.6 °C

  • Highest 1 December, 2025

    36.8 °C

Climate (2020–Present)

Garden Island (9km)

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  • Average Low 2020–2025

    15.1 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    23.4 °C
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