Marion Bay Weather Forecast
- 10
- 15
Cloudy
- 9
- 15
Cloudy
- 7
- 16
Cloudy
- 10
- 17
Cloud clearing
- 9
- 18
Showers increasing
- 11
- 18
Showers. Windy
- 9
- 15
Showers easing. Windy
Today 3 Aug Yorke Peninsula
Cloudy. Slight chance of a shower, becoming less likely in the late afternoon and evening. Winds southwesterly 15 to 25 km/h becoming light in the evening. Daytime maximum temperatures around 16.
Investigator Strait Coastal Waters
- Wind
- Southwesterly 10 to 15 knots, reaching up to 20 knots through the Backstairs Passage in the late afternoon. Winds decreasing to about 10 knots in the late evening.
- Seas
- Around 1 metre.
- 1st Swell
- West to southwesterly 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres later in the evening.
- Weather
- Cloudy.
- Weather Situation
- A cold front slips across the southeast of the state overnight into Monday, as a high pressure system moves into the Bight, behind the front. The high is forecast to extend a ridge throughout the state as it moves east during the week, likely being centred over NSW towards the end of the week.
Marion Bay Temperature Statistics View More
August Temperature
Stenhouse Bay (6km)
Lowest 1 August, 2026
4.5 °CAverage August
9.7 °CHighest 1 August, 2026
15.7 °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