Brother and Sister Weather Forecast

    • 6
    • 12

    Shower or two

    • 8
    • 13

    Partly cloudy

    • 9
    • 14

    Possible shower

    • 10
    • 15

    Cloudy

    • 9
    • 17

    Possible shower

    • 11
    • 17

    Shower or two

    • 10
    • 16

    Shower or two

Today 10 Sep South East

Partly cloudy. High chance of showers in the far south, slight chance elsewhere. Snow falling above 1000 metres. Winds northwest to southwesterly 15 to 25 km/h tending southwesterly in the middle of the day then tending westerly in the early afternoon. Daytime maximum temperatures between 8 and 13.

Storm Bay

Wind
West to southwesterly 10 to 15 knots.
Seas
Around 1 metre.
Weather
Cloudy.
Weather Situation
An easing southwesterly stream flows over Tasmania today, before tending westerly during Thursday and Friday as a high builds over the Bight. The high moves over Victoria and brings a ridge over Tasmania on Saturday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Brother and Sister Temperature Statistics View More

September Temperature

Tasman Island (26km)

  • Lowest 5 September, 2025

    1.9 °C

  • Average September

    8.3 °C

  • Highest 2 September, 2025

    13.7 °C

Climate (2020–Present)

Tasman Island (26km)

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  • Average Low 2020–2025

    9.4 °C

  • Average 2020–2025

    11.5 °C

  • Average High 2020–2025

    14.6 °C
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