Sisters Bay Weather Forecast

    • 5
    • 15

    Partly cloudy

    • 7
    • 16

    Partly cloudy

    • 12
    • 19

    Shower or two

    • 7
    • 11

    Showers

    • 4
    • 11

    Cloudy

    • 4
    • 14

    Cloudy

    • 7
    • 20

    Shower or two

Today 23 Sep South East

Partly cloudy. Areas of frost early this morning. Winds northwesterly 15 to 25 km/h tending northwest to southwesterly in the middle of the day then becoming light in the late evening. Daytime maximum temperatures between 13 and 19.

Lower East Coastal Waters

Wineglass Bay to Tasman Island
Wind
Northwesterly 10 to 15 knots tending northwest to northeasterly in the early afternoon. Winds reaching up to 20 knots offshore early in the morning and again in the evening.
Seas
1 to 1.5 metres, decreasing to 1 metre during the morning.
1st Swell
South to southwesterly 1.5 to 2.5 metres inshore, increasing to 2 to 4 metres offshore.
Weather
Mostly sunny.
Weather Situation
A high pressure system centred over Bass Strait moves eastwards to lie over the northern Tasman Sea during today and Thursday, maintaining ridge dominated conditions over Tasmania. A 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.
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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