Portsea Surf Beach Weather Forecast
- 10
- 18
Sunny
- 11
- 18
Partly cloudy
- 10
- 20
Partly cloudy
- 12
- 20
Partly cloudy
- 14
- 20
Shower
- 14
- 19
Shower
- 13
- 19
Shower
Today 12 May Mornington Peninsula
Mostly sunny. Light winds becoming easterly 15 to 20 km/h in the late evening.
Port Phillip Local Waters
- Wind
- North to northeasterly below 10 knots becoming east to southeasterly in the middle of the day.
- Seas
- Below 0.5 metres.
- Weather
- The chance of fog in the late morning with reduced visibility. Mostly sunny afternoon.
- Weather Situation
- A large high pressure system south of Victoria extends a ridge over the state, which will persist for most of the week as the high centre moves over the Tasman Sea. A cold front is expected to approach from the southwest late Friday.
Portsea Surf Beach Temperature Statistics View More
May Temperature
Avalon Airport (39km)
Lowest 11 May, 2026
5.3 °CAverage May
14.6 °CHighest 1 May, 2026
29.3 °C
Climate (2021–Present)
Avalon Airport (39km)
Average Low 2021–2026
9.7 °CAverage 2021–2026
14.6 °CAverage High 2021–2026
20.6 °C