Marion Bay Weather Forecast

    • 13
    • 20

    Possible shower

    • 14
    • 19

    Shower or two

    • 14
    • 20

    Possible shower

    • 12
    • 20

    Partly cloudy

    • 13
    • 20

    Partly cloudy

    • 13
    • 20

    Shower or two

    • 13
    • 19

    Shower or two

Today 18 May Yorke Peninsula

Partly cloudy. Slight chance of a shower. Winds southwesterly 15 to 25 km/h turning westerly 15 to 20 km/h in the evening. Daytime maximum temperatures around 20.

Investigator Strait Coastal Waters

Wind
Westerly about 10 knots increasing to 10 to 15 knots in the middle of the day.
Seas
Around 1 metre.
1st Swell
West to southwesterly around 1 metre, increasing to 1 to 1.5 metres inshore.
Weather
Partly cloudy.
Weather Situation
A ridge of high pressure builds in the west. A cold front will move over the south early Tuesday, followed by a high pressure system, which will linger in the Bight midweek.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Marion Bay Temperature Statistics View More

May Temperature

Stenhouse Bay (6km)

  • Lowest 3 May, 2026

    11.4 °C

  • Average May

    16.3 °C

  • Highest 1 May, 2026

    28.9 °C

Climate (2021–Present)

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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