Waterfall Bay (Port Arthur) Weather Forecast

    • 7
    • 13

    Cloudy

    • 7
    • 14

    Cloudy

    • 8
    • 15

    Cloudy

    • 8
    • 18

    Shower or two

    • 13
    • 21

    Shower or two

    • 10
    • 19

    Shower or two

    • 10
    • 15

    Shower or two

Today 26 Sep South East

Partly cloudy. Medium chance of showers, becoming less likely later this evening. Snow possible above 600 metres. Possible small hail. Winds southwesterly 25 to 40 km/h decreasing to 20 to 30 km/h in the evening.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Southwesterly 20 to 25 knots, reaching up to 30 knots in the late afternoon.
Seas
2 to 2.5 metres.
1st Swell
Southwesterly 2 to 3 metres inshore, increasing to 2.5 to 4 metres offshore.
Weather
Cloudy.
Weather Situation
A high pressure system centred well to the west of Tasmania extends a ridge over the state. The high centre is forecast to move across the state during Sunday and Monday before moving over the Tasman Sea during Tuesday. Northerly flow is expected to build during Tuesday over Tasmania ahead of an approaching trough, forecast to cross during early Wednesday.
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 16 September, 2026

    3.4 °C

  • Average September

    10.9 °C

  • Highest 20 September, 2026

    24.5 °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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