Port Arthur Weather Forecast

    • 14
    • 37

    Clear

    • 19
    • 40

    Sunny

    • 21
    • 34

    Partly cloudy

    • 15
    • 28

    Partly cloudy

    • 16
    • 26

    Shower

    • 13
    • 24

    Sunny

    • 13
    • 23

    Cloudy

Today 17 Dec Yorke Peninsula

Clear. Winds northwest to southwesterly 15 to 20 km/h tending southeasterly in the evening.

Gulf St Vincent Coastal Waters

Wind
East to southeasterly 10 to 15 knots tending south to southeasterly in the late afternoon then becoming east to southeasterly below 10 knots in the late evening.
Seas
Below 1 metre.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Clear.
Weather Situation
A ridge of high pressure extends across most of SA this evening, as a trough of low pressure develops over the west on Thursday. This broad area of low pressure is expected to slowly move across the state from the west during Friday and Saturday, before another ridge of high pressure develops through the west and south on Sunday.
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Port Arthur Temperature Statistics View More

December Temperature

Kadina Airport (41km)

  • Lowest 8 December, 2025

    7 °C

  • Average December

    20.1 °C

  • Highest 12 December, 2025

    38.7 °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

    23.3 °C
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