Blue Bay Weather Forecast
- 12
- 19
Showers
- 14
- 18
Showers easing
- 11
- 19
Partly cloudy
- 11
- 21
Sunny
- 10
- 20
Sunny
- 11
- 20
Mostly sunny
- 15
- 21
Partly cloudy
Today 29 Sep Mandurah
Partly cloudy. High chance of showers, most likely in the late afternoon and evening. Winds westerly 15 to 20 km/h.
Perth Local Waters
Two Rocks to Dawesville, inshore from Rottnest Island- Wind
- Westerly about 10 knots increasing to 10 to 15 knots in the late afternoon.
- Seas
- Below 1 metre.
- 1st Swell
- Southwesterly 1 to 1.5 metres.
- Weather
- Partly cloudy. 70% chance of showers.
- Weather Situation
- A weak cold front will cross the west coast early Wednesday morning, followed by another weak front brushing the south coast on Wednesday night. A ridge will extend over southern WA from Thursday.
Blue Bay Temperature Statistics View More
September Temperature
Garden Island (31km)
Lowest 1 September, 2026
10.2 °CAverage September
16.7 °CHighest 16 September, 2026
29.3 °C
Climate (2021–2026)
Garden Island (31km)
Average Low 2021–2026
15.1 °CAverage 2021–2026
18.9 °CAverage High 2021–2026
23.3 °C