Waterfall Bay (Port Arthur) Weather Forecast

    • 7
    • 18

    Partly cloudy

    • 10
    • 18

    Cloudy

    • 12
    • 20

    Late shower or two

    • 12
    • 19

    Possible shower

    • 12
    • 21

    Becoming cloudy

    • 14
    • 21

    Shower or two

    • 11
    • 19

    Cloudy

Today 20 Apr South East

Partly cloudy. Winds south to southeasterly 15 to 20 km/h becoming light in the late afternoon.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Variable about 10 knots.
Seas
Below 1 metre.
1st Swell
Southeasterly 1.5 to 2 metres, decreasing to 1.5 metres by early evening.
Weather
Partly cloudy.
Weather Situation
A high to the southeast of Tasmania will remain over the Southern Tasman Sea through until Tuesday whilst extending a ridge over the state. A weak cold front is expected to approach Tasmania during Wednesday, then cross the state late Wednesday and early Thursday ahead of another high that will move over Tasmania and into the Tasman Sea on Thursday. A northerly airstream will be maintained on Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Waterfall Bay (Port Arthur) Temperature Statistics View More

April Temperature

Tasman Island (15km)

  • Lowest 13 April, 2026

    5.8 °C

  • Average April

    11.4 °C

  • Highest 1 April, 2026

    22 °C

Climate (2021–Present)

Tasman Island (15km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    11.5 °C

  • Average High 2021–2026

    14.5 °C
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