Port Arthur Weather Forecast

    • 13
    • 28

    Partly cloudy

    • 17
    • 29

    Partly cloudy

    • 17
    • 30

    Windy

    • 16
    • 24

    Shower

    • 9
    • 19

    Shower

    • 10
    • 20

    Shower

    • 11
    • 20

    Shower

Today 29 Apr Yorke Peninsula

Mostly sunny. Winds east to northeasterly 15 to 20 km/h turning northerly 15 to 25 km/h in the middle of the day then tending northeasterly 15 to 20 km/h in the evening. Daytime maximum temperatures in the mid to high 20s.

Gulf St Vincent Coastal Waters

Wind
Variable about 10 knots becoming northeasterly 10 to 15 knots in the evening.
Seas
Below 1 metre.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Mostly sunny.
Weather Situation
A strong high pressure system over the Tasman Sea will maintain a ridge across South Australia through to Friday. Northerly winds freshen on Friday ahead of a trough that is forecast to move across the far west Friday afternoon, then continue across the state during the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Arthur Temperature Statistics View More

April Temperature

Kadina Airport (41km)

  • Lowest 18 April, 2026

    6.7 °C

  • Average April

    17.8 °C

  • Highest 21 April, 2026

    30.2 °C

Climate (2021–Present)

Kadina Airport (41km)

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  • Average Low 2021–2026

    10.1 °C

  • Average 2021–2026

    16.4 °C

  • Average High 2021–2026

    23.5 °C
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