Marion Bay Weather Forecast
- 10
- 16
Showers. Windy
- 8
- 14
Rain. Very windy
- 8
- 15
Wind easing. Cloudy
- 9
- 15
Shower or two
- 10
- 16
Shower or two
- 9
- 17
Possible shower
- 9
- 18
Mostly sunny
Today 28 Aug Yorke Peninsula
Cloudy. Very high chance of showers. The chance of a thunderstorm. Winds west to northwesterly 25 to 40 km/h. Daytime maximum temperatures around 16.
Investigator Strait Coastal Waters
- Wind
- Westerly 20 to 30 knots decreasing to 20 to 25 knots in the early morning then increasing to 20 to 30 knots in the early afternoon.
- Seas
- 1.5 to 2.5 metres.
- 1st Swell
- West to southwesterly 1.5 to 2.5 metres.
- Weather
- Cloudy. 95% chance of showers. The chance of a thunderstorm in the morning and afternoon.
- Weather Situation
- A series of cold fronts and troughs move over coastal waters in coming days, clearing late Friday. A high pressure system will extend a ridge over western waters late Friday and more broadly over waters on Saturday, before centring over the Bight on Sunday.
Marion Bay Temperature Statistics View More
August Temperature
Stenhouse Bay (6km)
Lowest 3 August, 2025
5.5 °CAverage August
12.8 °CHighest 11 August, 2025
20.1 °C
Climate (2020–Present)
Stenhouse Bay (6km)
Average Low 2020–2025
13.1 °CAverage 2020–2025
16 °CAverage High 2020–2025
20.5 °C