Waterfall Bay (Port Arthur) Weather Forecast

    • 8
    • 15

    Partly cloudy

    • 9
    • 15

    Rain

    • 10
    • 16

    Possible shower

    • 8
    • 13

    Showers easing

    • 8
    • 15

    Showers increasing

    • 7
    • 13

    Shower or two. Windy

    • 8
    • 16

    Partly cloudy

Today 4 Sep South East

Partly cloudy. Medium chance of showers in the far south, slight chance elsewhere. Winds northwesterly 25 to 40 km/h decreasing to 20 to 30 km/h in the late evening.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Westerly 20 to 30 knots turning northwesterly in the evening.
Seas
2 to 3 metres.
1st Swell
West to southwesterly 5 to 6 metres.
Weather
Partly cloudy. 70% chance of showers.
Weather Situation
A low pressure system and associated cold front is approaching Tasmania from the west, directing a northwesterly airstream over the state. This low is expected to cross Tasmania on Saturday, directing the airstream more northerly. A west to southwesterly airstream is then expected in the wake of the low on Saturday evening. A series of weaker cold fronts embedded in the westerly flow are then forecast to cross the state in the following days.
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

    11.4 °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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