Sisters Bay Weather Forecast

    • 5
    • 14

    Clear

    • 4
    • 14

    Sunny

    • 9
    • 18

    Partly cloudy

    • 12
    • 18

    Shower or two

    • 5
    • 9

    Showers

    • 4
    • 12

    Shower or two

    • 6
    • 13

    Partly cloudy

Today 11 Sep South East

Mostly clear. Winds westerly 20 to 30 km/h.

Lower East Coastal Waters

Wineglass Bay to Tasman Island
Wind
West to southwesterly 15 to 20 knots, reaching up to 30 knots offshore in the late afternoon. Winds tending west to northwesterly 10 to 15 knots in the late evening.
Seas
1.5 to 2.5 metres.
1st Swell
South to southwesterly 2 to 3 metres inshore, increasing to 3 to 5 metres offshore.
Weather
Mostly clear.
Weather Situation
A high pressure system over southern Victoria is forecast to move over the Tasman Sea by early Saturday and continue to slowly move east. 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, directing the flow northwesterly before crossing Tasmania overnight into early Tuesday. A southwesterly flow will establish over the state in its wake.
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

    10.1 °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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