Port Arthur Weather Forecast

    • 12
    • 22

    Windy

    • 11
    • 25

    Sunny

    • 14
    • 31

    Sunny

    • 18
    • 36

    Sunny

    • 19
    • 37

    Sunny

    • 17
    • 25

    Windy

    • 13
    • 23

    Cloudy

Today 25 Dec Yorke Peninsula

Clear. Winds southeasterly 25 to 40 km/h.

Gulf St Vincent Coastal Waters

Wind
Southerly 20 to 25 knots, reaching up to 30 knots north of Port Vincent to Brighton during the afternoon and evening. Winds turning southeasterly in the evening.
Seas
1.5 to 2.5 metres.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Clear.
Weather Situation
A high pressure centre lies south of the Bight and will slowly continue eastwards on Friday, to be south of Tasmania on Saturday. The next cold front crosses south of the Bight on Sunday dragging a low pressure trough across western parts of the State. The trough is expected to reach central parts on Monday.
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Port Arthur Temperature Statistics View More

December Temperature

Kadina Airport (41km)

  • Lowest 8 December, 2025

    7 °C

  • Average December

    20.6 °C

  • Highest 18 December, 2025

    41.4 °C

Climate (2020–Present)

Kadina Airport (41km)

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  • Average Low 2020–2025

    10 °C

  • Average 2020–2025

    16.3 °C

  • Average High 2020–2025

    23.4 °C
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