Marion Bay Weather Forecast
- 10
- 17
Shower or two
- 10
- 16
Showers. Becoming windy
- 9
- 15
Showers easing. Wind easing
- 9
- 17
Showers increasing. Windy
- 8
- 16
Showers easing. Wind easing
- 11
- 17
Shower or two
- 10
- 17
Partly cloudy
Today 8 Aug Yorke Peninsula
Partly cloudy. Very high chance of showers, most likely in the evening. Winds northerly 25 to 35 km/h. Daytime maximum temperatures around 17.
Investigator Strait Coastal Waters
- Wind
- Northerly 15 to 20 knots.
- Seas
- 1 to 1.5 metres.
- 1st Swell
- West to southwesterly 1 to 1.5 metres.
- Weather
- Partly cloudy. 80% chance of showers.
- Weather Situation
- A weak high pressure system centred over NSW and a cold front approaching from the west result in a northerly airstream over SA this morning. The vigorous cold front will move across the west late Saturday then moving across remaining parts of the State on Sunday. A high pressure system moves just to the north on Monday, ahead of another cold front forecast to move across South Australia on Tuesday.
Marion Bay Temperature Statistics View More
August Temperature
Stenhouse Bay (6km)
Lowest 1 August, 2026
4.5 °CAverage August
11.1 °CHighest 6 August, 2026
16.1 °C
Climate (2021–2026)
Stenhouse Bay (6km)
Average Low 2021–2026
13.1 °CAverage 2021–2026
16.1 °CAverage High 2021–2026
20.5 °C