The Brothers Weather Forecast

    • 17
    • 28

    Becoming windy. Partly cloudy

    • 18
    • 30

    Sunny

    • 20
    • 33

    Sunny

    • 22
    • 31

    Sunny

    • 19
    • 25

    Partly cloudy

    • 16
    • 26

    Sunny

    • 17
    • 29

    Sunny

Today 13 Jan Perth

Mostly sunny. Winds southerly 20 to 30 km/h tending southeasterly in the evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southerly 15 to 25 knots tending southwesterly in the middle of the day then tending southeast to southwesterly in the evening. Winds reaching up to 30 knots in the evening.
Seas
1.5 to 2 metres, decreasing to 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southwesterly below 1 metre.
Weather
Cloud clearing.
Weather Situation
A trough is moving inland from the west coast ahead of a new high pressure system developing south of the Bight today. The west coast trough will start to redevelop from Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

The Brothers Temperature Statistics View More

January Temperature

Garden Island (9km)

  • Lowest 11 January, 2026

    16.3 °C

  • Average January

    22.9 °C

  • Highest 1 January, 2026

    31.8 °C

Climate (2021–Present)

Garden Island (9km)

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  • Average Low 2021–2026

    15.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    23.3 °C
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