Port Arthur Weather Forecast

    • 9
    • 20

    Partly cloudy

    • 10
    • 19

    Partly cloudy

    • 11
    • 21

    Mostly sunny

    • 13
    • 20

    Shower or two

    • 10
    • 18

    Showers. Becoming windy

    • 8
    • 15

    Shower or two. Windy

    • 9
    • 19

    Cloudy

Today 10 Dec South East

Partly cloudy. Slight chance of a shower in the far south, most likely this evening. Near zero chance of rain elsewhere. Winds northwesterly 15 to 25 km/h turning westerly 25 to 40 km/h in the late morning. Daytime maximum temperatures between 14 and 21.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Westerly 15 to 25 knots, reaching up to 30 knots during the afternoon and evening.
Seas
1 to 2 metres, increasing to 2 to 3 metres during the afternoon.
1st Swell
West to southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore.
Weather
Partly cloudy.
Weather Situation
A high centre will slowly approach the state on Wednesday, as a weak trough brushes the far south. The high is expected to move over Tasmania on Thursday and slowly away to the east during Friday. A cold front is then forecast to cross the state during Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Arthur Temperature Statistics View More

December Temperature

Tasman Island (16km)

  • Lowest 7 December, 2025

    5.4 °C

  • Average December

    12 °C

  • Highest 4 December, 2025

    24.6 °C

Climate (2020–Present)

Tasman Island (16km)

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  • Average Low 2020–2025

    9.3 °C

  • Average 2020–2025

    11.5 °C

  • Average High 2020–2025

    14.5 °C
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