Marion Bay Weather Forecast
- 9
- 15
Possible shower
- 9
- 15
Cloudy
- 7
- 15
Partly cloudy
- 8
- 15
Mostly sunny
- 9
- 15
Shower or two
- 10
- 15
Cloudy
- 9
- 14
Cloudy
Today 29 Jul Yorke Peninsula
Cloudy. Medium chance of showers. Winds southwesterly 15 to 20 km/h becoming light in the late afternoon. Daytime maximum temperatures around 15.
Investigator Strait Coastal Waters
- Wind
- South to southwesterly 10 to 15 knots, reaching up to 20 knots through the Backstairs Passage early in the morning. Winds decreasing to below 10 knots in the late afternoon.
- Seas
- Around 1 metre.
- 1st Swell
- West to southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres during the afternoon.
- Weather
- Cloudy. 50% chance of showers.
- Weather Situation
- Showers lingering behind a cold front in Bass Strait will ease this morning. A high pressure system will then move over the Bight today, and will extend a ridge across the state as it slowly moves east into NSW by Saturday. Another cold front is then forecast to cross the state from Saturday evening into Sunday.
Marion Bay Temperature Statistics View More
July Temperature
Stenhouse Bay (6km)
Lowest 17 July, 2026
4.2 °CAverage July
12.4 °CHighest 18 July, 2026
18.4 °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