Marion Bay Weather Forecast

    • 8
    • 17

    Rain increasing

    • 10
    • 17

    Showers easing

    • 9
    • 15

    Showers. Windy

    • 9
    • 16

    Showers. Windy

    • 9
    • 16

    Showers. Windy

    • 9
    • 17

    Shower or two. Windy

    • 11
    • 17

    Shower or two

Today 7 Aug Yorke Peninsula

Becoming cloudy. Very high chance of rain, most likely in the evening. Winds northerly 20 to 30 km/h. Daytime maximum temperatures around 17.

Investigator Strait Coastal Waters

Wind
Northerly 15 to 20 knots.
Seas
Around 1 metre.
1st Swell
West to southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres by early evening.
Weather
Becoming cloudy. 90% chance of rain.
Weather Situation
A weak high pressure system centred over NSW will slowly move east while maintaining a ridge over SA until Saturday. A strong cold front will then begin to move into the Bight and move east over the state from late Saturday and throughout Sunday. Another cold front is then forecast to move into the Bight from late Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Marion Bay Temperature Statistics View More

August Temperature

Stenhouse Bay (6km)

  • Lowest 1 August, 2026

    4.5 °C

  • Average August

    11 °C

  • Highest 2 August, 2026

    15.8 °C

Climate (2021–2026)

Stenhouse Bay (6km)

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  • Average Low 2021–2026

    13.1 °C

  • Average 2021–2026

    16.1 °C

  • Average High 2021–2026

    20.5 °C
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