Sisters Bay Weather Forecast

    • 4
    • 14

    Clear

    • 10
    • 18

    Partly cloudy

    • 12
    • 19

    Shower or two

    • 6
    • 10

    Showers

    • 3
    • 10

    Shower or two

    • 5
    • 13

    Cloudy

    • 6
    • 17

    Partly cloudy

Today 12 Sep South East

Clear. Winds northeast to southeasterly 15 to 20 km/h tending northwest to northeasterly in the evening.

Lower East Coastal Waters

Wineglass Bay to Tasman Island
Wind
Northeasterly 10 to 15 knots turning northerly in the evening. Winds reaching up to 20 knots offshore in the late evening.
Seas
Around 1 metre.
1st Swell
South to southwesterly 1.5 to 2.5 metres inshore, increasing to 2.5 to 4 metres offshore.
Weather
Clear.
Weather Situation
A high pressure system off the NSW coast is slowly moving over the Tasman Sea, with light winds over Tasmania expected to turn northwesterly as the high moves further offshore. A weak trough is expected to cross Tasmania late Sunday. A cold front is then expected to approach the state from the west on Monday, crossing Tasmania overnight. A southwesterly flow will establish over Tasmania from Tuesday, as a high in the Bight extends a ridge over the state on Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Sisters Bay Temperature Statistics View More

September Temperature

Tasman Island (31km)

  • Lowest 9 September, 2026

    4.4 °C

  • Average September

    10.3 °C

  • Highest 1 September, 2026

    15.9 °C

Climate (2021–2026)

Tasman Island (31km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    11.6 °C

  • Average High 2021–2026

    14.6 °C
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