Cascades Bay Weather Forecast

    • 8
    • 12

    Showers

    • 6
    • 13

    Shower or two

    • 9
    • 15

    Partly cloudy

    • 10
    • 17

    Partly cloudy

    • 12
    • 18

    Partly cloudy

    • 12
    • 22

    Shower or two

    • 7
    • 14

    Shower or two

Today 15 Sep South East

Cloudy. Very high chance of showers. Snow falling above 400 metres. The chance of a thunderstorm in the late morning and afternoon. Possible small hail. Winds west to southwesterly 30 to 45 km/h. Daytime maximum temperatures between 6 and 12.

Frederick Henry Bay and Norfolk Bay Boating

Wind
Southwesterly 20 to 25 knots increasing to 20 to 30 knots in the evening then decreasing to 15 to 25 knots in the late evening.
Seas
1 to 2 metres.
Weather
Cloudy. 90% chance of showers, with possible small hail.
Weather Situation
A high over the central parts of the Bight directs a cold southwesterly wind over Tasmania. The high is expected to extend a ridge over the state from Wednesday as it moves toward western Victoria, and over central Victoria on Thursday. Strong and gusty northwesterly winds are expected on Friday as a deep low pressure system develops well to the south. A weak ridge is forecast to move over the state on Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cascades Bay Temperature Statistics View More

September Temperature

Tasman Island (25km)

  • Lowest 9 September, 2026

    4.4 °C

  • Average September

    11 °C

  • Highest 13 September, 2026

    18.9 °C

Climate (2021–2026)

Tasman Island (25km)

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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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