Brother and Sister Weather Forecast

    • 9
    • 14

    Shower or two. Becoming windy

    • 7
    • 13

    Sunny

    • 7
    • 14

    Sunny

    • 9
    • 16

    Partly cloudy

    • 9
    • 14

    Possible shower

    • 7
    • 14

    Sunny

    • 8
    • 14

    Shower or two

Today 19 Jul South East

Partly cloudy. High chance of showers, most likely during this afternoon and evening. Snow falling above 600 metres. Possible small hail in the far south. Damaging winds possible. Winds northerly 25 to 40 km/h increasing to 35 to 50 km/h in the middle of the day then turning northwesterly 35 to 55 km/h in the early afternoon. Daytime maximum temperatures between 11 and 15.

Storm Bay

Wind
North to northeasterly 15 to 25 knots tending northerly 20 to 30 knots during the morning. Winds turning northwesterly 20 to 30 knots in the afternoon.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres during the morning.
Weather
Partly cloudy. 70% chance of showers.
Weather Situation
A northwesterly airstream persists over Tasmania ahead of a strong cold front, expected to cross the state from the west on Saturday. A high pressure system over mainland Australia extends a weak ridge over the Tasmania on Sunday, before moving into the Tasman Sea during Monday. A weaker cold front is forecast to cross the state on Tuesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Brother and Sister Temperature Statistics View More

July Temperature

Tasman Island (26km)

  • Lowest 15 July, 2025

    4.7 °C

  • Average July

    9 °C

  • Highest 6 July, 2025

    13.9 °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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