Marion Bay Weather Forecast

    • 11
    • 16

    Shower or two

    • 10
    • 18

    Showers increasing. Windy

    • 11
    • 15

    Showers easing

    • 9
    • 14

    Cloudy

    • 9
    • 14

    Cloudy

    • 8
    • 15

    Cloudy

    • 8
    • 16

    Mostly sunny

Today 26 Jul Yorke Peninsula

Partly cloudy. The chance of morning fog. Medium chance of showers, becoming less likely late this afternoon and evening. Light winds becoming northwesterly 15 to 20 km/h in the middle of the day then becoming light in the late afternoon. Daytime maximum temperatures around 16.

Investigator Strait Coastal Waters

Wind
Variable below 10 knots becoming northwesterly 10 to 15 knots in the middle of the day.
Seas
Below 1 metre.
1st Swell
West to southwesterly around 1 metre.
Weather
Partly cloudy. 50% chance of showers.
Weather Situation
A strong high pressure system centred over the state will slowly drift east and weaken over the weekend. A cold front will move up through the Bight and over southern SA on Monday, with a new high pressure system moving into the Bight mid next week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Marion Bay Temperature Statistics View More

July Temperature

Stenhouse Bay (6km)

  • Lowest 17 July, 2026

    4.2 °C

  • Average July

    12.3 °C

  • Highest 18 July, 2026

    18.4 °C

Climate (2021–2026)

Stenhouse Bay (6km)

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  • Average Low 2021–2026

    13.2 °C

  • Average 2021–2026

    16.1 °C

  • Average High 2021–2026

    20.5 °C
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