Brother and Sister Weather Forecast

    • 8
    • 12

    Partly cloudy

    • 6
    • 11

    Mostly sunny

    • 4
    • 13

    Shower or two

    • 7
    • 11

    Partly cloudy

    • 6
    • 12

    Partly cloudy

    • 6
    • 13

    Mostly sunny

    • 7
    • 13

    Mostly sunny

Today 5 Jul South East

Partly cloudy. Winds northwest to southwesterly 15 to 20 km/h tending south to southwesterly in the middle of the day then becoming light in the early afternoon. Daytime maximum temperatures between 7 and 11.

Storm Bay

Wind
South to southwesterly 10 to 15 knots decreasing to below 10 knots in the middle of the day then becoming east to northeasterly in the late evening.
Seas
Around 1 metre, decreasing below 0.5 metres during the afternoon.
Weather
Cloudy.
Weather Situation
A very strong high pressure centre is moving over the state today and remaining in the vicinity during Monday. A trough is forecast to cross the south on Tuesday, before another high pressure system arrives in the evening. The high persists overhead during Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Brother and Sister Temperature Statistics View More

July Temperature

Tasman Island (26km)

  • Lowest 4 July, 2026

    3.9 °C

  • Average July

    9.6 °C

  • Highest 1 July, 2026

    15.3 °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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