Cascades Bay Weather Forecast

    • 11
    • 16

    Mostly clear

    • 10
    • 15

    Partly cloudy

    • 8
    • 18

    Shower or two

    • 9
    • 15

    Cloudy

    • 10
    • 14

    Showers. Becoming windy

    • 8
    • 15

    Shower or two

    • 9
    • 14

    Showers

Today 30 Aug South East

Partly cloudy. Medium chance of showers in the far south, near zero chance elsewhere. Winds westerly 25 to 35 km/h.

Frederick Henry Bay and Norfolk Bay Boating

Wind
Northwest to southwesterly 15 to 20 knots decreasing to below 10 knots in the late evening.
Seas
Below 1 metre.
Weather
Mostly clear.
Weather Situation
A high pressure ridge extends over the southern mainland maintaining a westerly flow over Tasmania today, continuing into Monday before the high centre is forecast to drift into the Tasman Sea late Monday. A cold front is expected to approach from the west and cross Tasmania on Tuesday, followed by persistent westerly flow for the remainder of the week. A cold front embedded in the westerly flow is forecast to cross during Thursday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cascades Bay Temperature Statistics View More

August Temperature

Tasman Island (25km)

  • Lowest 23 August, 2026

    6 °C
  • Average August

    10 °C
  • Highest 20 August, 2026

    17.1 °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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