Sullivan Bay Weather Forecast
- 7
- 16
Partly cloudy
- 10
- 21
Windy
- 15
- 21
Shower
- 14
- 20
Shower
- 11
- 16
Shower
- 9
- 16
Partly cloudy
- 9
- 18
Partly cloudy
Today 28 Sep Mornington Peninsula
Sunny. Light winds becoming southeasterly 15 to 20 km/h in the late afternoon then becoming light in the evening.
Port Phillip Local Waters
- Wind
- Variable about 10 knots.
- Seas
- Below 1 metre.
- Weather
- Mostly sunny.
- Weather Situation
- A high pressure system in the Bight extends a ridge over Victoria. This high will slowly drift through Bass Strait and then into the Tasman Sea by Tuesday as a trough approaches from the west. This trough will cross Victoria on Wednesday with a second trough following on Thursday.
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