Sisters Bay Weather Forecast

    • 13
    • 21

    Mostly sunny

    • 9
    • 23

    Sunny

    • 16
    • 26

    Shower or two developing

    • 12
    • 18

    Showers

    • 8
    • 12

    Showers easing

    • 7
    • 12

    Showers

    • 5
    • 14

    Cloudy

Today 21 Oct South East

Partly cloudy. Slight chance of a shower. The chance of a thunderstorm in the afternoon. Winds northwest to southwesterly 15 to 25 km/h tending southeast to southwesterly in the early afternoon then tending northeast to southeasterly 15 to 20 km/h in the late evening. Daytime maximum temperatures 20 to 25.

Lower East Coastal Waters

Wineglass Bay to Tasman Island
Wind
Northwest to northeasterly 10 to 15 knots tending south to southeasterly 15 to 20 knots in the middle of the day.
Seas
Around 1 metre.
1st Swell
Southwesterly around 1 metre inshore, increasing to 1 to 2 metres offshore.
Weather
Partly cloudy. The chance of a thunderstorm inshore in the afternoon.
Weather Situation
A blocking high over the Tasman Sea directs a warm northwesterly flow over Tasmania this week. A weak trough lingers over the state today. A decaying cold front is expected to move over Tasmania on Friday, with a stronger cold front forecast to quickly follow on Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Sisters Bay Temperature Statistics View More

October Temperature

Tasman Island (31 km)

  • Lowest 13 October, 2026

    4 °C

  • Average October

    11.3 °C

  • Highest 18 October, 2026

    20.1 °C

Climate (2021–2026)

Tasman Island (31 km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    11.6 °C

  • Average High 2021–2026

    14.7 °C
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