Marion Bay Weather Forecast
- 12
- 19
Shower or two
- 12
- 19
Shower or two
- 12
- 20
Partly cloudy
- 13
- 21
Mostly sunny
- 13
- 23
Partly cloudy
- 15
- 22
Shower or two
- 15
- 22
Partly cloudy
Today 25 Oct Yorke Peninsula
High chance of showers in the morning and early afternoon. Mostly sunny afternoon. Winds southerly 20 to 30 km/h turning southwesterly 25 to 35 km/h during the morning then decreasing to 15 to 25 km/h in the evening. Daytime maximum temperatures around 19.
Investigator Strait Coastal Waters
- Wind
- Southerly 15 to 20 knots turning southwesterly during the morning.
- Seas
- 1 to 1.5 metres.
- 1st Swell
- West to southwesterly 1 to 1.5 metres.
- Weather
- Partly cloudy. 70% chance of showers.
- Weather Situation
- A trough and cold front continue moving across the far northeast on Sunday. A ridge of high pressure will move into the west late Sunday and persist over much of southern SA through to mid-next week, as the associated high slowly drifts east across waters to the south. A trough and low pressure system may then develop near the WA border from late Wednesday.
Marion Bay Temperature Statistics View More
October Temperature
Stenhouse Bay (6 km)
Lowest 11 October, 2026
10.6 °CAverage October
16.7 °CHighest 22 October, 2026
32.3 °C
Climate (2021–2026)
Stenhouse Bay (6 km)
Average Low 2021–2026
13.2 °CAverage 2021–2026
16.1 °CAverage High 2021–2026
20.5 °C