Waterfall Bay (Port Arthur) Weather Forecast

    • 10
    • 22

    Sunny

    • 15
    • 25

    Mostly sunny

    • 15
    • 23

    Partly cloudy

    • 13
    • 22

    Partly cloudy

    • 14
    • 23

    Mostly sunny

    • 14
    • 23

    Possible shower

    • 13
    • 20

    Shower or two

Today 26 Jan South East

Sunny. Winds east to northeasterly 15 to 25 km/h tending north to northeasterly in the late evening. Daytime maximum temperatures 20 to 26.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Northeasterly about 10 knots increasing to 15 to 20 knots in the middle of the day.
Seas
Around 1 metre, increasing to 1 to 1.5 metres near Tasman Island during the afternoon.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Sunny.
Weather Situation
A high pressure system to the west moves over the state today to be in the Tasman Sea on Tuesday. A trough of low pressure approaches from the west and crosses the state during Tuesday afternoon and evening. On Wednesday a high pressure system south of the Bight extends a ridge over the state. The ridge persists on Thursday the high centre moves in to the Tasman Sea.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Waterfall Bay (Port Arthur) Temperature Statistics View More

January Temperature

Tasman Island (15km)

  • Lowest 11 January, 2026

    5.8 °C

  • Average January

    13.6 °C

  • Highest 6 January, 2026

    20.3 °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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