Marion Bay Weather Forecast

    • 15
    • 24

    Showers. Windy

    • 15
    • 21

    Shower or two. Wind easing

    • 14
    • 24

    Showers

    • 15
    • 22

    Mostly sunny

    • 14
    • 22

    Partly cloudy

    • 14
    • 20

    Shower or two

    • 13
    • 21

    Partly cloudy

Today 30 Oct Yorke Peninsula

Cloudy. Very high chance of showers. The chance of a thunderstorm in the afternoon and evening. Winds northerly 25 to 40 km/h tending northwesterly 20 to 30 km/h in the late evening. Daytime maximum temperatures in the mid to high 20s.

Investigator Strait Coastal Waters

Wind
North to northeasterly 15 to 20 knots turning northwesterly in the late evening.
Seas
1 to 1.5 metres.
1st Swell
West to southwesterly below 1 metre, increasing to 1 to 1.5 metres through the Backstairs Passage.
Weather
Cloudy. 90% chance of showers. The chance of a thunderstorm in the afternoon and evening.
Weather Situation
A ridge of high pressure lies over eastern parts of SA, while a low pressure system in WA extends a trough into the west. The low and trough will move across the state on Friday, clearing to the east by Saturday morning as a new high pressure system briefly settles over SA. Another low is expected to enter from the west on Sunday, moving over central and eastern parts on 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 26 October, 2026

    10.3 °C

  • Average October

    16.3 °C

  • Highest 22 October, 2026

    32.3 °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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