Marion Bay Weather Forecast

    • 11
    • 21

    Partly cloudy

    • 13
    • 21

    Shower or two

    • 13
    • 19

    Shower or two

    • 13
    • 18

    Possible shower

    • 11
    • 20

    Partly cloudy

    • 14
    • 24

    Mostly sunny

    • 14
    • 22

    Showers

Today 23 Sep Yorke Peninsula

Mostly clear. Light winds becoming east to northeasterly 15 to 20 km/h in the late evening.

Investigator Strait Coastal Waters

Wind
East to northeasterly about 10 knots.
Seas
Below 1 metre.
1st Swell
West to southwesterly below 1 metre.
Weather
Mostly clear.
Weather Situation
A high pressure system centred over the Tasman Sea extends a ridge westwards over central and eastern SA and a low pressure trough extends from WA over western SA. This trough will be very slow-moving for the rest of the week and over the weekend and the ridge will move away to the east. A weakening cold front will slip across southern coasts late Thursday and early Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Marion Bay Temperature Statistics View More

September Temperature

Stenhouse Bay (6km)

  • Lowest 17 September, 2026

    6.7 °C

  • Average September

    14.3 °C

  • Highest 19 September, 2026

    27.4 °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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