Waterfall Bay (Port Arthur) Weather Forecast

    • 6
    • 17

    Sunny

    • 9
    • 20

    Partly cloudy

    • 13
    • 19

    Possible shower

    • 7
    • 11

    Showers

    • 7
    • 14

    Shower or two

    • 9
    • 15

    Partly cloudy

    • 10
    • 17

    Possible shower

Today 12 Sep South East

Sunny. Areas of morning frost. Winds west to northwesterly 15 to 25 km/h tending northeast to southeasterly 15 to 20 km/h in the early afternoon then tending northwest to northeasterly in the evening. Overnight temperatures falling to between 1 and 6 with daytime temperatures reaching between 15 and 21.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Westerly 15 to 25 knots, reaching up to 30 knots early in the morning. Winds shifting north to northeasterly 10 to 15 knots in the late afternoon.
Seas
1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre during the afternoon.
1st Swell
Southwesterly 3 to 5 metres.
Weather
Partly cloudy.
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 9 September, 2026

    4.4 °C

  • Average September

    10.3 °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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