Sullivan Bay Weather Forecast
- 7
- 16
Partly cloudy
- 10
- 21
Windy
- 15
- 21
Shower
- 14
- 20
Shower
- 11
- 16
Shower
- 10
- 16
Partly cloudy
- 9
- 18
Partly cloudy
Today 28 Sep Mornington Peninsula
Sunny. Winds southeasterly 15 to 20 km/h becoming light in the evening.
Port Phillip Local Waters
- Wind
- Southeasterly 10 to 15 knots, reaching up to 20 knots in the north early in the morning. Winds becoming variable about 10 knots in the morning.
- Seas
- Below 1 metre.
- Weather
- Mostly sunny.
Sullivan Bay Temperature Statistics View More
September Temperature
Cerberus (36km)
Lowest 23 September, 2026
1.8 °CAverage September
13.2 °CHighest 20 September, 2026
26.2 °C
Climate (2021–2026)
Cerberus (36km)
Average Low 2021–2026
10.2 °CAverage 2021–2026
14.6 °CAverage High 2021–2026
19.7 °C