Port Arthur Weather Forecast

    • 10
    • 15

    Mostly sunny

    • 11
    • 16

    Mostly sunny

    • 10
    • 15

    Partly cloudy

    • 8
    • 17

    Shower or two

    • 9
    • 15

    Shower or two

    • 9
    • 13

    Shower or two

    • 8
    • 15

    Shower or two

Today 29 Aug South East

Partly cloudy. Medium chance of showers in the south, near zero chance elsewhere. Winds westerly 25 to 35 km/h. Daytime maximum temperatures between 10 and 17.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Westerly 25 to 35 knots.
Seas
2.5 to 3 metres.
1st Swell
West to southwesterly 4 to 5 metres.
Weather
Cloudy. 60% chance of showers.
Weather Situation
a high pressure ridge extending across the north will persist into the new week with the high pressure centre drifting into the Tasman Sea late Monday. A strong cold front is expected to approach from the west, crossing Tasmania on Tuesday, followed by strong westerly flow.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Arthur Temperature Statistics View More

August Temperature

Tasman Island (16km)

  • Lowest 23 August, 2026

    6 °C

  • Average August

    9.9 °C

  • Highest 20 August, 2026

    17.1 °C

Climate (2021–2026)

Tasman Island (16km)

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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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