Brunswick River - Mullumbimby Weather Forecast

    • 21
    • 33

    Becoming windy. Sunny

    • 22
    • 35

    Windy. Mostly sunny

    • 23
    • 31

    Shower or two. Possible storm

    • 22
    • 28

    Shower or two

    • 20
    • 32

    Shower or two

    • 21
    • 26

    Shower or two

    • 19
    • 25

    Shower or two

Today 21 Dec Northern Rivers

Sunny day. The chance of a thunderstorm in the south late this afternoon and evening. Light winds becoming north to northeasterly 20 to 30 km/h in the middle of the day. Daytime maximum temperatures 33 to 39.

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  • Temperature Forecast Bureau of Meteorology

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Brunswick River - Mullumbimby Temperature Statistics View More

December Temperature

Cape Byron (16km)

  • Lowest 3 December, 2025

    16.6 °C

  • Average December

    23.2 °C

  • Highest 10 December, 2025

    31 °C

Climate (2020–Present)

Cape Byron (16km)

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  • Average Low 2020–2025

    17.3 °C

  • Average 2020–2025

    20.2 °C

  • Average High 2020–2025

    23.7 °C
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