Brother and Sister Weather Forecast

    • 11
    • 13

    Light showers

    • 6
    • 13

    Partly cloudy

    • 6
    • 14

    Mostly sunny

    • 7
    • 14

    Partly cloudy

    • 8
    • 15

    Partly cloudy

    • 9
    • 15

    Mostly sunny

    • 10
    • 16

    Shower or two

Today 14 Aug South East

Cloudy. Very high chance of showers, becoming less likely this evening. Snow falling above 1000 metres. Winds west to northwesterly 20 to 30 km/h turning southwesterly in the early afternoon then becoming light in the late evening. Daytime maximum temperatures between 8 and 14.

Storm Bay

Wind
Northwesterly 15 to 20 knots turning southwesterly in the middle of the day.
Seas
Around 1 metre.
Weather
Cloudy. 95% chance of showers.
Weather Situation
A high pressure system over the mainland is forecast to direct a westerly flow over Tasmania overnight and during Friday, with a weak cold front expected to brush the south of the state during Friday morning. The high will moves over Tasmania on Saturday and Sunday, then is expected to move to the east of the state during Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Brother and Sister Temperature Statistics View More

August Temperature

Tasman Island (26km)

  • Lowest 5 August, 2026

    6.5 °C

  • Average August

    9.8 °C

  • Highest 1 August, 2026

    13.7 °C

Climate (2021–2026)

Tasman Island (26km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    11.5 °C

  • Average High 2021–2026

    14.6 °C
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