Cascades Bay - Shelly Beach Weather Forecast

    • 7
    • 14

    Partly cloudy

    • 9
    • 16

    Partly cloudy

    • 7
    • 17

    Mostly sunny

    • 9
    • 18

    Partly cloudy

    • 12
    • 20

    Shower or two

    • 9
    • 15

    Shower or two

    • 7
    • 14

    Partly cloudy

Today 21 Sep South East

Partly cloudy. High chance of showers in the far south, medium chance elsewhere. Snow falling above 500 metres. The chance of a thunderstorm in the far south. Possible small hail. Winds westerly 30 to 45 km/h. Daytime maximum temperatures between 9 and 14.

Frederick Henry Bay and Norfolk Bay Boating

Wind
Westerly 15 to 20 knots.
Seas
Around 1 metre.
Weather
Partly cloudy.
Weather Situation
In the wake of a cold front a high will establish over the Bight today, with the high expected to move to the north of Tasmania on Tuesday morning and lie over the northern Tasman Sea during Wednesday and Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cascades Bay - Shelly Beach Temperature Statistics View More

September Temperature

Tasman Island (24km)

  • Lowest 16 September, 2026

    3.4 °C

  • Average September

    10.8 °C

  • Highest 14 September, 2026

    19.9 °C

Climate (2021–2026)

Tasman Island (24km)

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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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