Marion Bay Weather Forecast

    • 11
    • 18

    Showers. Windy

    • 10
    • 16

    Shower or two. Wind easing

    • 11
    • 17

    Shower or two

    • 10
    • 17

    Partly cloudy

    • 9
    • 17

    Partly cloudy

    • 10
    • 17

    Cloudy

    • 10
    • 19

    Partly cloudy

Today 19 Sep Yorke Peninsula

Partly cloudy. High chance of showers in the south, medium chance elsewhere. Winds westerly 20 to 30 km/h increasing to 30 to 45 km/h in the morning then turning southwesterly 25 to 35 km/h in the evening. Overnight temperatures falling to between 6 and 10 with daytime temperatures reaching around 19.

Investigator Strait Coastal Waters

Wind
Westerly about 10 knots increasing to 15 to 25 knots before dawn then tending southwesterly 20 to 25 knots in the evening. Winds reaching up to 30 knots during the day.
Seas
Around 1 metre, increasing to 2 to 3 metres during the morning.
1st Swell
West to southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres around midday, then tending westerly 1.5 to 2.5 metres during the afternoon.
Weather
Partly cloudy. 70% chance of showers.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Marion Bay Temperature Statistics View More

September Temperature

Stenhouse Bay (6km)

  • Lowest 18 September, 2025

    6.6 °C

  • Average September

    13.9 °C

  • Highest 6 September, 2025

    24.2 °C

Climate (2020–Present)

Stenhouse Bay (6km)

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  • Average Low 2020–2025

    13.1 °C

  • Average 2020–2025

    16 °C

  • Average High 2020–2025

    20.5 °C
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