Waterfall Bay (Port Arthur) Weather Forecast

    • 10
    • 15

    Possible shower

    • 9
    • 16

    Partly cloudy

    • 10
    • 18

    Mostly sunny

    • 11
    • 18

    Partly cloudy

    • 12
    • 17

    Shower or two

    • 9
    • 15

    Showers

    • 9
    • 16

    Shower or two

Today 20 May South East

Cloudy. High chance of showers in the far south, slight chance elsewhere. Winds west to northwesterly 20 to 30 km/h tending west to southwesterly 25 to 35 km/h in the morning then tending west to northwesterly 15 to 25 km/h in the late evening. Overnight temperatures falling to between 5 and 9 with daytime temperatures reaching between 10 and 15.

South East Coastal Waters

Tasman Island to South East Cape
Wind
West to southwesterly 15 to 25 knots, reaching up to 30 knots during the day.
Seas
1.5 to 2.5 metres.
1st Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Cloudy. 80% chance of showers.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Waterfall Bay (Port Arthur) Temperature Statistics View More

May Temperature

Tasman Island (15km)

  • Lowest 8 May, 2026

    4.7 °C

  • Average May

    12.9 °C

  • Highest 1 May, 2026

    21.4 °C

Climate (2021–Present)

Tasman Island (15km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    11.5 °C

  • Average High 2021–2026

    14.6 °C
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