Cascades Bay - Shelly Beach Weather Forecast

    • 9
    • 18

    Shower or two

    • 12
    • 17

    Wind easing. Mostly sunny

    • 9
    • 24

    Possible shower

    • 7
    • 13

    Shower or two. Becoming windy

    • 8
    • 15

    Partly cloudy

    • 8
    • 16

    Partly cloudy

    • 10
    • 16

    Shower or two

Today 18 Sep South East

Partly cloudy. High chance of showers, most likely in the late afternoon and evening. Damaging winds possible. Winds west to northwesterly 45 to 65 km/h. Daytime maximum temperatures between 14 and 19.

Frederick Henry Bay and Norfolk Bay Boating

Wind
West to northwesterly 20 to 30 knots becoming northwesterly 25 to 35 knots in the late afternoon then decreasing to 20 to 30 knots in the evening.
Seas
1 to 1.5 metres.
Weather
Partly cloudy. 60% chance of showers.
Weather Situation
A high to the north of Tasmania is combining with a cold front passing to the south of Tasmania to direct a vigorous westerly flow over the state, with these conditions to continue overnight and early Saturday. A weak ridge is forecast to extend over Tasmania on Saturday afternoon and evening, ahead of another cold front to cross the state on Sunday evening. The flow will tend colder southwesterly on Monday morning, with a high to establish over the Bight. This high is expected to move to the north of Tasmania on Tuesday morning and lie to the northeast of the state by Tuesday evening.
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

    10.3 °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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