Sullivan Bay Weather Forecast
- 13
- 21
Shower
- 12
- 17
Shower
- 10
- 14
Shower
- 9
- 13
Windy
- 9
- 14
Cloudy
- 9
- 19
Sunny
- 12
- 21
Partly cloudy
Today 13 Sep Mornington Peninsula
Partly cloudy. Medium chance of showers in the evening. The chance of a thunderstorm in the late afternoon and evening. Winds northerly 30 to 45 km/h.
Port Phillip Local Waters
- Wind
- Northerly 15 to 25 knots.
- Seas
- Below 1 metre, increasing to 1 to 1.5 metres during the morning.
- Weather
- Partly cloudy. 60% chance of showers in the evening. The chance of a thunderstorm in the late afternoon and evening.
Sullivan Bay Temperature Statistics View More
September Temperature
Cerberus (36km)
Lowest 8 September, 2026
3.3 °CAverage September
12.1 °CHighest 5 September, 2026
17.6 °C
Climate (2021–2026)
Cerberus (36km)
Average Low 2021–2026
10.2 °CAverage 2021–2026
14.6 °CAverage High 2021–2026
19.6 °C