Marion Bay Weather Forecast

    • 10
    • 15

    Cloudy

    • 9
    • 15

    Cloudy

    • 7
    • 16

    Cloudy

    • 10
    • 17

    Cloud clearing

    • 9
    • 18

    Showers increasing

    • 11
    • 18

    Showers. Windy

    • 9
    • 15

    Showers easing. Windy

Today 3 Aug Yorke Peninsula

Cloudy. Slight chance of a shower, becoming less likely in the late afternoon and evening. Winds southwesterly 15 to 25 km/h becoming light in the evening. Daytime maximum temperatures around 16.

Investigator Strait Coastal Waters

Wind
Southwesterly 10 to 15 knots, reaching up to 20 knots through the Backstairs Passage in the late afternoon. Winds decreasing to about 10 knots in the late evening.
Seas
Around 1 metre.
1st Swell
West to southwesterly 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres later in the evening.
Weather
Cloudy.
Weather Situation
A cold front slips across the southeast of the state overnight into Monday, as a high pressure system moves into the Bight, behind the front. The high is forecast to extend a ridge throughout the state as it moves east during the week, likely being centred over NSW towards the end of the week.
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  • 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

    9.7 °C
  • Highest 1 August, 2026

    15.7 °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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