Brother and Sister Weather Forecast

    • 12
    • 23

    Partly cloudy

    • 11
    • 27

    Mostly sunny

    • 15
    • 28

    Sunny morning. Shower or two

    • 12
    • 21

    Showers

    • 9
    • 16

    Showers

    • 8
    • 15

    Showers

    • 7
    • 17

    Possible shower

Today 21 Oct South East

Partly cloudy. Slight chance of a shower in the morning and early afternoon. The chance of a thunderstorm in the afternoon. Winds northwest to northeasterly 15 to 20 km/h tending northwest to southwesterly 15 to 25 km/h in the morning then tending northeast to southeasterly in the evening. Overnight temperatures falling to between 11 and 14 with daytime temperatures reaching 20 to 25.

Storm Bay

Wind
Variable below 10 knots becoming south to southeasterly 15 to 20 knots in the morning then becoming variable below 10 knots in the evening.
Seas
Below 0.5 metres, increasing to around 1 metre around midday.
Weather
Partly cloudy. The chance of a thunderstorm in the afternoon.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Brother and Sister Temperature Statistics View More

October Temperature

Tasman Island (26 km)

  • Lowest 13 October, 2026

    4 °C

  • Average October

    11.3 °C

  • Highest 18 October, 2026

    20.1 °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

    14.7 °C
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