Sullivan Bay Weather Forecast
- 18
- 26
Shower
- 13
- 20
Shower
- 12
- 17
Rain
- 9
- 16
Shower
- 9
- 16
Shower
- 9
- 17
Shower
- 11
- 17
Shower
Today 23 Oct Mornington Peninsula
Sunny day. Slight chance of a shower late this afternoon and evening. Winds northerly 25 to 40 km/h shifting south to southwesterly 15 to 20 km/h in the evening.
Port Phillip Local Waters
- Wind
- Northerly 15 to 20 knots shifting southerly 10 to 15 knots in the evening.
- Seas
- Below 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre during the afternoon.
- Weather
- Sunny day. The chance of a thunderstorm in the north late this afternoon and evening.
- Weather Situation
- A high pressure system centred over the Tasman Sea will drift slowly eastwards as a low pressure trough approaches from the west later today. This trough will linger over the State on Saturday and Sunday before a cold front crosses later Sunday into early Monday, clearing everything to the east.
Sullivan Bay Temperature Statistics View More
October Temperature
Cerberus (36 km)
Lowest 15 October, 2026
3.3 °CAverage October
15.3 °CHighest 20 October, 2026
28.6 °C
Climate (2021–2026)
Cerberus (36 km)
Average Low 2021–2026
10.3 °CAverage 2021–2026
14.6 °CAverage High 2021–2026
19.7 °C