Brother and Sister Weather Forecast

    • 7
    • 17

    Mostly clear

    • 9
    • 15

    Showers. Becoming windy

    • 8
    • 15

    Cloudy

    • 9
    • 17

    Partly cloudy

    • 9
    • 19

    Mostly sunny

    • 12
    • 21

    Shower or two

    • 11
    • 17

    Shower or two

Today 5 Oct South East

Mostly clear. Winds northwest to southwesterly 15 to 25 km/h becoming northwesterly 20 to 30 km/h in the evening.

Storm Bay

Wind
Variable about 10 knots.
Seas
Below 1 metre.
Weather
Mostly clear.
Weather Situation
A cold front approaches the west of Tasmania, expected to cross during Tuesday bringing cold, wintry conditions. A high pressure system is then forecast to move over Tasmania from the west on Wednesday. The airstream is expected to tend northerly over Tasmania as the high moves to the east on Thursday, persisting into Friday as a weakening cold front approaches the west.
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Brother and Sister Temperature Statistics View More

October Temperature

Tasman Island (26 km)

  • Lowest 2 October, 2026

    8.1 °C

  • Average October

    11 °C

  • Highest 1 October, 2026

    17.5 °C

Climate (2021–2026)

Tasman Island (26 km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    11.6 °C

  • Average High 2021–2026

    14.6 °C
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