Brother and Sister Weather Forecast

    • 10
    • 16

    Windy. Partly cloudy

    • 7
    • 16

    Cloudy

    • 8
    • 14

    Rain

    • 7
    • 15

    Shower or two

    • 8
    • 15

    Possible shower

    • 9
    • 16

    Shower or two

    • 9
    • 14

    Shower or two

Today 20 Oct South East

Partly cloudy. High chance of showers in the far south, medium chance elsewhere. Snow falling above 1000 metres. Possible small hail in the south. Damaging winds possible. Winds westerly 35 to 55 km/h.

Storm Bay

Wind
Westerly 20 to 30 knots. Winds may reach up to 35 knots at times.
Seas
1 to 1.5 metres.
Weather
Partly cloudy.
Weather Situation
A ridge of high pressure to the north of Tasmania, directs a westerly flow over the state this evening and into Tuesday. A low pressure system is forecast to move through Bass Strait during Wednesday, with a strong southwesterly flow to develop behind it on Thursday, persisting during Friday. A high pressure system is then expected to approach northwest Tasmania by Friday evening.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Brother and Sister Temperature Statistics View More

October Temperature

Tasman Island (26km)

  • Lowest 13 October, 2025

    4.1 °C

  • Average October

    10.6 °C

  • Highest 5 October, 2025

    24 °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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