Rottnest Island Airport Weather Forecast
- 17
- 23
Mostly sunny
- 19
- 23
Mostly sunny
- 16
- 21
Showers increasing
- 13
- 19
Showers easing. Wind easing
- 15
- 19
Cloudy
- 15
- 19
Sunny
- 15
- 19
Possible shower
Today 16 Sep Lower West
Mostly sunny. Medium chance of showers, most likely in the afternoon and early evening. The chance of a thunderstorm inland in the afternoon and early evening. Winds easterly 20 to 25 km/h turning northeasterly 20 to 30 km/h in the morning then decreasing to 15 to 20 km/h in the late afternoon. Daytime maximum temperatures around 30.
Rottnest Island Airport Temperature Statistics View More
September Temperature
Rottnest Island (3km)
Lowest 9 September, 2026
11.5 °CAverage September
16.1 °CHighest 11 September, 2026
23.3 °C
Climate (2021–2026)
Rottnest Island (3km)
Average Low 2021–2026
16.1 °CAverage 2021–2026
18.9 °CAverage High 2021–2026
22.8 °C