The Brothers Weather Forecast

    • 16
    • 30

    Sunny

    • 19
    • 32

    Sunny

    • 19
    • 32

    Mostly sunny

    • 19
    • 28

    Mostly sunny

    • 19
    • 28

    Sunny

    • 20
    • 29

    Sunny

    • 19
    • 28

    Sunny

Today 30 Dec Perth

Sunny. Winds east to southeasterly 15 to 25 km/h.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
South to southwesterly 15 to 20 knots turning southeasterly 10 to 15 knots in the late evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southwesterly below 1 metre.
Weather
Sunny.
Weather Situation
A ridge sits along the south coast, driving a easterly airstream over the local waters. A trough developing down the west coast moves inland on Thursday or Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

The Brothers Temperature Statistics View More

December Temperature

Garden Island (9km)

  • Lowest 21 December, 2025

    13.9 °C

  • Average December

    22.1 °C

  • Highest 25 December, 2025

    41.8 °C

Climate (2020–Present)

Garden Island (9km)

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  • Average Low 2020–2025

    15.2 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    23.4 °C
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