Marion Bay Weather Forecast

    • 15
    • 21

    Showers. Possible storm

    • 13
    • 20

    Shower or two

    • 12
    • 25

    Possible shower or storm

    • 13
    • 17

    Possible shower

    • 11
    • 17

    Possible shower

    • 10
    • 17

    Cloudy

    • 11
    • 18

    Cloudy

Today 9 Oct Yorke Peninsula

Cloudy. Very high chance of rain, becoming less likely in the evening. The chance of a thunderstorm from the late morning, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding. Winds northerly 30 to 45 km/h turning westerly 25 to 35 km/h in the late afternoon. Daytime maximum temperatures in the low to mid 20s.

Investigator Strait Coastal Waters

Wind
Northerly 20 to 25 knots, reaching up to 30 knots in the late morning. Winds turning westerly in the early afternoon.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres around midday.
1st Swell
West to southwesterly around 1 metre.
Weather
Cloudy. 90% chance of showers. The chance of a thunderstorm from the late morning with possible squalls.
Weather Situation
A trough and cold front over western SA will track eastwards across the rest of SA on Friday before a weak high briefly establishes in the north on Saturday. Another series of troughs and cold fronts are expected to enter western SA early on Sunday, crossing the state then clearing in the east by the end of Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Marion Bay Temperature Statistics View More

October Temperature

Stenhouse Bay (6 km)

  • Lowest 5 October, 2026

    11.7 °C

  • Average October

    15.3 °C

  • Highest 1 October, 2026

    21 °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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