Waterfall Bay (Port Arthur) Weather Forecast

    • 10
    • 15

    Partly cloudy

    • 9
    • 15

    Showers. Becoming windy

    • 8
    • 14

    Partly cloudy

    • 9
    • 15

    Showers

    • 9
    • 14

    Shower or two

    • 9
    • 13

    Shower or two

    • 8
    • 15

    Shower or two

Today 2 Sep South East

Cloudy. High chance of showers in the far south, slight chance elsewhere. Winds northwesterly 25 to 40 km/h.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Northwesterly 20 to 25 knots, reaching up to 30 knots offshore during the afternoon and evening.
Seas
1 to 2 metres, increasing to 2 to 3 metres offshore.
1st Swell
West to southwesterly 4 to 5 metres.
Weather
Partly cloudy. 50% chance of showers.
Weather Situation
A west to northwesterly airstream will strengthen ahead of a strong cold front expected to cross Tasmania early Thursday. Vigorous west to southwesterly flow will following in the wake of the front, easing through Friday before a low pressure system approaches from the west early Saturday. This low is expected to cross southern Tasmania on Saturday, drawing a cold front over the state. Another west to southwesterly airstream is expected to follow the front with a trough approaching the west coast late Sunday.
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 1 September, 2026

    9.4 °C

  • Average September

    11.5 °C

  • Highest

    –

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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