Marion Bay Weather Forecast

    • 14
    • 21

    Cloudy

    • 13
    • 22

    Cloud clearing

    • 14
    • 24

    Sunny

    • 16
    • 29

    Sunny

    • 18
    • 31

    Sunny

    • 18
    • 26

    Partly cloudy

    • 15
    • 24

    Mostly sunny

Today 14 Dec Yorke Peninsula

Partly cloudy. Winds southerly 20 to 30 km/h.

Investigator Strait Coastal Waters

Wind
Southerly 15 to 20 knots.
Seas
1 to 1.5 metres.
1st Swell
West to southwesterly around 1 metre, increasing to 1 to 1.5 metres through the Backstairs Passage.
Weather
Cloudy.
Weather Situation
A high pressure system in the Bight, maintains a ridge over SA as it slowly moves eastwards and out to the Tasman Sea by Wednesday. A trough of low pressure forecast to drift into the far northeast of SA late Wednesday, slowing moving south during Thursday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Marion Bay Temperature Statistics View More

December Temperature

Stenhouse Bay (6km)

  • Lowest 3 December, 2025

    9.1 °C

  • Average December

    17.9 °C

  • Highest 3 December, 2025

    33.4 °C

Climate (2020–Present)

Stenhouse Bay (6km)

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  • Average Low 2020–2025

    13.1 °C

  • Average 2020–2025

    16 °C

  • Average High 2020–2025

    20.4 °C
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