Sullivan Bay Weather Forecast
- 10
- 14
Windy
- 7
- 15
Windy
- 9
- 14
Shower
- 10
- 15
Cloudy
- 8
- 14
Partly cloudy
- 9
- 17
Sunny
- 12
- 20
Shower
Today 7 Sep Mornington Peninsula
Partly cloudy. Slight chance of a shower in the late morning. Winds southerly 25 to 35 km/h decreasing to 15 to 25 km/h in the evening then becoming light in the late evening.
Port Phillip Local Waters
- Wind
- Southwesterly 20 to 25 knots, reaching up to 30 knots in the late morning. Winds turning southerly 15 to 25 knots in the middle of the day then decreasing to 10 to 15 knots in the evening.
- Seas
- 1 to 1.5 metres, decreasing below 1 metre later in the evening.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure ridge lies over northern Victoria, while a weak cold front is expected to cross southern Victoria through today. The ridge will extend across the state Tuesday, before another weak cold front clips southern Victoria later that day. A high pressure system will approach from the west from Wednesday.
Sullivan Bay Temperature Statistics View More
September Temperature
Cerberus (36km)
Lowest 1 September, 2026
4.9 °CAverage September
13.3 °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
19.7 °C