Marion Bay Weather Forecast

    • 16
    • 26

    Clear

    • 18
    • 26

    Possible shower. Wind easing

    • 14
    • 20

    Partly cloudy

    • 13
    • 21

    Cloud clearing

    • 13
    • 26

    Mostly sunny

    • 14
    • 22

    Possible shower

    • 12
    • 20

    Shower or two

Today 18 Oct Yorke Peninsula

Clear. Winds northwest to northeasterly 15 to 20 km/h becoming light in the evening then becoming east to northeasterly 15 to 25 km/h in the late evening.

Investigator Strait Coastal Waters

Wind
Easterly about 10 knots increasing to 10 to 15 knots in the evening.
Seas
Below 1 metre.
1st Swell
West to southwesterly around 1 metre.
Weather
Clear.
Weather Situation
A slow-moving high pressure system over the Tasman Sea extends a ridge over eastern SA. A trough of low pressure over WA will move eastwards into western SA late Sunday and reach southeastern parts later Monday, while a weakening cold front crosses the Bight. The trough lingers in the east through the middle of the week as a weak high pressure system forms in the Bight. This trough weakens on Thursday as a second trough moves into the west from WA.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Marion Bay Temperature Statistics View More

October Temperature

Stenhouse Bay (6 km)

  • Lowest 11 October, 2026

    10.6 °C

  • Average October

    15.9 °C

  • Highest 8 October, 2026

    29.9 °C

Climate (2021–2026)

Stenhouse Bay (6 km)

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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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