Marion Bay Weather Forecast

    • 10
    • 17

    Partly cloudy

    • 8
    • 17

    Showers increasing

    • 10
    • 17

    Showers easing

    • 9
    • 15

    Rain. Windy

    • 9
    • 16

    Showers easing. Wind easing

    • 9
    • 16

    Showers. Windy

    • 9
    • 16

    Showers easing. Windy

Today 6 Aug Yorke Peninsula

Cloudy. Medium chance of light showers, becoming less likely in the late afternoon and evening. Winds northwest to southwesterly 15 to 20 km/h becoming light in the middle of the day. Daytime maximum temperatures around 17.

Investigator Strait Coastal Waters

Wind
West to southwesterly about 10 knots becoming east to northeasterly in the evening.
Seas
Below 0.5 metres.
1st Swell
West to southwesterly around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
Weather
Partly cloudy.
Weather Situation
A trough continues moving across southeast coastal parts of SA Thursday morning. A weak high pressure system centred over western NSW will slowly move east while maintaining a ridge over SA until the weekend. A strong cold front will begin to move into the Bight and track east over the state from Saturday into Sunday.
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

    10.3 °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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