Marion Bay Weather Forecast
- 9
- 18
Sunny
- 12
- 20
Shower or two. Wind easing
- 11
- 16
Shower or two
- 11
- 17
Showers easing
- 11
- 19
Showers
- 11
- 17
Shower or two
- 10
- 16
Shower or two
Today 31 Aug Yorke Peninsula
The chance of morning fog. Sunny afternoon. Light winds becoming north to northeasterly 15 to 20 km/h in the morning. Daytime maximum temperatures around 19.
Investigator Strait Coastal Waters
- Wind
- Easterly about 10 knots becoming north to northeasterly in the early morning.
- Seas
- Below 1 metre.
- 1st Swell
- West to southwesterly around 1 metre.
- Weather
- Sunny.
- Weather Situation
- A high pressure system southeast of SA continues extending a ridge across the state, as it moves over Victoria and into the Tasman Sea by late Monday. A cold front is then forecast to move across the state on Tuesday, as another ridge and high push in behind the front on Wednesday. Another cold front may slip across the southeast parts of SA early Thursday, with the high moving over eastern SA.
Marion Bay Temperature Statistics View More
August Temperature
Stenhouse Bay (6km)
Lowest 1 August, 2026
4.5 °CAverage August
12.9 °CHighest 18 August, 2026
19.9 °C
Climate (2021–2026)
Stenhouse Bay (6km)
Average Low 2021–2026
13.2 °CAverage 2021–2026
16.1 °CAverage High 2021–2026
20.5 °C