Brother and Sister Weather Forecast

    • 12
    • 16

    Partly cloudy

    • 8
    • 12

    Shower or two

    • 7
    • 15

    Possible shower

    • 9
    • 15

    Shower or two

    • 5
    • 13

    Showers

    • 6
    • 13

    Showers

    • 6
    • 12

    Showers

Today 16 Sep South East

Partly cloudy. Medium chance of showers. Snow possible above 1000 metres. Damaging winds possible. Winds northwesterly 35 to 50 km/h. Daytime maximum temperatures between 11 and 17.

Storm Bay

Wind
Northwesterly 20 to 30 knots decreasing to 15 to 20 knots in the late evening.
Seas
1 to 1.5 metres.
Weather
Partly cloudy.
Weather Situation
A series of cold fronts will cross Tasmania today, as a low to the southwest of the state moves towards the Tasman Sea. The low will quickly move away to the southeast on Wednesday morning, with a high pressure system over mainland Australia to direct a westerly airstream over Tasmania during Wednesday. A northwesterly airstream is expected to develop on Thursday, with a cold front to cross Tasmania early on Friday and another front to cross the west of the state Friday evening.
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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

    9.4 °C

  • Highest 14 September, 2025

    16.5 °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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