Brother and Sister Weather Forecast

    • 7
    • 13

    Shower or two

    • 7
    • 13

    Cloudy

    • 8
    • 15

    Cloudy

    • 8
    • 19

    Partly cloudy

    • 12
    • 21

    Shower or two

    • 10
    • 19

    Shower or two

    • 11
    • 16

    Shower or two

Today 26 Sep South East

Cloudy. High chance of showers, becoming less likely in the evening. Snow falling above 500 metres. Possible small hail from the late morning. Winds southwesterly 25 to 40 km/h. Daytime maximum temperatures between 7 and 12.

Storm Bay

Wind
Southwesterly 15 to 25 knots increasing to 25 to 30 knots in the late afternoon then decreasing to 15 to 25 knots in the evening.
Seas
1.5 to 2.5 metres.
Weather
Cloudy. 60% chance of showers, with possible small hail from the late morning.
Weather Situation
A cold front will cross Tasmania early Saturday morning. A high pressure system is then forecast to extend a ridge over Tasmania from the west during Saturday, before moving across the state on Sunday and Monday. The high is expected to move over the Tasman Sea during Tuesday with northerly flow building over Tasmania ahead of an approaching trough.
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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 16 September, 2026

    3.4 °C

  • Average September

    10.9 °C

  • Highest 20 September, 2026

    24.5 °C

Climate (2021–2026)

Tasman Island (26km)

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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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