Sisters Bay Weather Forecast

    • 6
    • 11

    Shower or two. Windy

    • 5
    • 14

    Possible shower

    • 7
    • 14

    Shower or two

    • 4
    • 9

    Showers

    • 6
    • 11

    Showers

    • 5
    • 10

    Showers easing

    • 5
    • 12

    Shower or two

Today 17 Sep South East

Partly cloudy. High chance of showers, becoming less likely in the late afternoon and evening. Snow falling above 700 metres. Possible small hail in the south. Winds westerly 30 to 45 km/h. Daytime maximum temperatures between 7 and 13.

Lower East Coastal Waters

Wineglass Bay to Tasman Island
Wind
Westerly 20 to 30 knots, reaching up to 35 knots offshore in the late afternoon.
Seas
2 to 3 metres.
1st Swell
Southwesterly 2 to 3 metres.
Weather
Partly cloudy. 50% chance of showers, with possible small hail.
Weather Situation
A westerly stream continues over Tasmania today, with a ridge to build over the state later tonight as a high moves quickly over Victoria. A northwesterly airstream will develop during Thursday as the high moves over the northern Tasman Sea. Cold fronts are expected to cross Tasmania early Friday morning and during Friday evening, with another cold front to approach the state from the west late Saturday evening.
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 5 September, 2025

    1.9 °C

  • Average September

    9.7 °C

  • Highest 15 September, 2025

    17.8 °C

Climate (2020–Present)

Tasman Island (31km)

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  • Average Low 2020–2025

    9.4 °C

  • Average 2020–2025

    11.5 °C

  • Average High 2020–2025

    14.6 °C
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