Sisters Bay Weather Forecast

    • 10
    • 18

    Partly cloudy

    • 12
    • 19

    Shower or two

    • 6
    • 10

    Showers

    • 2
    • 10

    Showers easing

    • 5
    • 13

    Partly cloudy

    • 6
    • 17

    Mostly sunny

    • 11
    • 19

    Partly cloudy

Today 13 Sep South East

Mostly clear. Winds north to northwesterly 20 to 30 km/h.

Lower East Coastal Waters

Wineglass Bay to Tasman Island
Wind
Northerly 15 to 20 knots, reaching up to 25 knots offshore in the evening.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres offshore by early evening.
1st Swell
South to southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2.5 metres offshore.
Weather
Mostly clear.
Weather Situation
A weak trough embedded in a westerly flow will cross Tasmania late today. 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. Flow turning westerly into Thursday as the high moves to the north.
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  • 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

    10.2 °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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