Brother and Sister Weather Forecast

    • 9
    • 13

    Cloudy

    • 8
    • 13

    Shower or two

    • 8
    • 15

    Possible shower

    • 9
    • 14

    Shower or two

    • 7
    • 13

    Possible shower

    • 7
    • 14

    Partly cloudy

    • 7
    • 14

    Partly cloudy

Today 11 Aug South East

Cloudy. Slight chance of a shower. Winds westerly 15 to 25 km/h turning north to northwesterly in the late afternoon. Daytime maximum temperatures between 10 and 14.

Storm Bay

Wind
Southwesterly 15 to 20 knots turning west to northwesterly below 10 knots during the morning then tending northerly 10 to 15 knots in the evening.
Seas
1 to 1.5 metres, decreasing below 1 metre during the morning.
Weather
Cloudy.
Weather Situation
A weak ridge is crossing over the state during today before a cold front arrives early Wednesday morning. A high is then forecast to move over the mainland directing a westerly flow over Tasmania on Thursday and persisting into Friday.
Graph Plots Open in Graphs

  • 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

    9.7 °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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