Port Arthur Weather Forecast

    • 8
    • 24

    Partly cloudy

    • 9
    • 20

    Shower

    • 8
    • 16

    Cloudy

    • 8
    • 18

    Shower

    • 9
    • 17

    Partly cloudy

    • 7
    • 17

    Cloudy

    • 7
    • 20

    Partly cloudy

Today 18 Sep Yorke Peninsula

Mostly sunny. Winds northerly 25 to 35 km/h turning westerly 15 to 20 km/h in the evening. Daytime maximum temperatures in the low to mid 20s.

Gulf St Vincent Coastal Waters

Wind
Northerly 15 to 20 knots turning westerly 10 to 15 knots in the evening.
Seas
Around 1 metre.
1st Swell
South to southwesterly below 1 metre.
Weather
Sunny.
Weather Situation
A high pressure system lies over the Tasman Sea with a ridge extending into the east of the state. A weak trough over South Australian waters will continue moving through eastern waters tonight. A cold front will pass over the south during Friday afternoon with a southwesterly flow persisting through the weekend as a ridge of high pressure extends over northern parts of the state.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Arthur Temperature Statistics View More

September Temperature

Kadina Airport (41km)

  • Lowest 2 September, 2025

    0.7 °C

  • Average September

    12.9 °C

  • Highest 6 September, 2025

    28.4 °C

Climate (2020–Present)

Kadina Airport (41km)

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  • Average Low 2020–2025

    10.1 °C

  • Average 2020–2025

    16.4 °C

  • Average High 2020–2025

    23.4 °C
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