Marion Bay Weather Forecast

    • 13
    • 20

    Possible shower

    • 13
    • 23

    Partly cloudy

    • 12
    • 17

    Partly cloudy

    • 12
    • 18

    Cloudy

    • 11
    • 18

    Partly cloudy

    • 11
    • 19

    Cloud clearing

    • 12
    • 21

    Sunny

Today 10 Oct Yorke Peninsula

Partly cloudy. Slight chance of a shower in the south in the late morning and afternoon. Near zero chance of rain elsewhere. Winds west to northwesterly 25 to 35 km/h becoming light in the evening. Daytime maximum temperatures in the low 20s.

Investigator Strait Coastal Waters

Wind
West to northwesterly 15 to 25 knots decreasing to about 10 knots in the late evening.
Seas
1 to 2 metres, decreasing to 1 metre by early evening.
1st Swell
West to southwesterly 2 to 3 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure system briefly establishes in the north today. Another series of troughs and cold fronts are expected to enter western SA early on Sunday, crossing the state and then clearing in the east by the end of Monday. A ridge of high pressure will then push into western SA on Monday before the associated high moves into waters south on Tuesday. A trough over the WA/NT border will also extend into SA at times from 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

    15.9 °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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