Sisters Bay Weather Forecast

    • 7
    • 16

    Partly cloudy

    • 12
    • 19

    Possible shower

    • 6
    • 11

    Showers

    • 4
    • 11

    Cloudy

    • 4
    • 13

    Cloudy

    • 6
    • 18

    Mostly sunny

    • 11
    • 19

    Shower or two

Today 24 Sep South East

Partly cloudy. Slight chance of a shower this evening. Winds north to northeasterly 15 to 20 km/h tending east to northeasterly 15 to 25 km/h in the early afternoon then tending northwest to northeasterly 20 to 30 km/h in the evening. Daytime maximum temperatures between 16 and 23.

Lower East Coastal Waters

Wineglass Bay to Tasman Island
Wind
Variable about 10 knots becoming northerly 15 to 20 knots in the early afternoon.
Seas
Below 1 metre, increasing to 1 to 1.5 metres by early evening.
1st Swell
South to southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2.5 metres offshore.
Weather
Partly cloudy.
Weather Situation
A ridge extending over Tasmania from a high pressure system in the Tasman Sea will weaken today, as a trough approaches from the west in the evening. Another weak trough is forecast to move over the state from the west during Friday ahead of a cold front to cross later. A secondary high pressure system is forecast to extend a ridge over Tasmania from the southwest during Saturday, and move over on Sunday.
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 16 September, 2026

    3.4 °C

  • Average September

    10.6 °C

  • Highest 20 September, 2026

    24.5 °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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