Waterfall Bay (Port Arthur) Weather Forecast

    • 10
    • 15

    Windy. Partly cloudy

    • 8
    • 15

    Partly cloudy

    • 10
    • 15

    Rain

    • 10
    • 14

    Shower or two

    • 8
    • 13

    Shower or two

    • 7
    • 15

    Shower or two

    • 8
    • 14

    Shower or two

Today 3 Sep South East

Cloudy. High chance of showers, with possible small hail. Snow falling above 700 metres. Damaging winds possible. Winds westerly 40 to 60 km/h decreasing to 35 to 50 km/h in the late evening.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Westerly 30 to 40 knots.
Seas
4 metres.
1st Swell
Westerly 5 to 7 metres.
Weather
Cloudy. 95% chance of showers. The chance of a thunderstorm offshore. Possible small hail.
Weather Situation
A strong westerly flow will gradually ease through Thursday evening and Friday before a low pressure system approaches from the west early Saturday. This low is expected to cross southern Tasmania on Saturday, bringing a series of troughs and a cold front over the state. A west to southwesterly airstream is expected to follow the low with a weak cold front crossing the state early Monday before a ridge of high pressure develops from the west.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Waterfall Bay (Port Arthur) Temperature Statistics View More

September Temperature

Tasman Island (15km)

  • Lowest 2 September, 2026

    8.5 °C

  • Average September

    11.1 °C

  • Highest 1 September, 2026

    15.9 °C

Climate (2021–2026)

Tasman Island (15km)

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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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