Gunnamatta Beach Weather Forecast
- 13
- 24
Windy
- 9
- 14
Shower
- 4
- 16
Partly cloudy
- 6
- 18
Partly cloudy
- 10
- 24
Partly cloudy
- 14
- 24
Shower
- 12
- 17
Shower
Today 20 Sep Mornington Peninsula
Partly cloudy. Medium chance of showers, most likely at night. Winds northerly 40 to 60 km/h turning westerly 25 to 35 km/h in the late afternoon.
Central Victoria Coastal Waters
Cape Otway to Wilsons Promontory- Wind
- North to northwesterly 25 to 30 knots turning westerly in the late afternoon.
- Seas
- 2 to 3 metres.
- 1st Swell
- Southwesterly 1.5 to 2.5 metres, tending westerly 2 to 3 metres by early evening.
- Weather
- Mostly sunny day. 60% chance of showers in the evening.
- Weather Situation
- A high pressure system over NSW is directing a northwesterly airstream across Victoria as a cold front crosses waters south of the Bight. The front is forecast to enter western Victoria this afternoon, reaching central districts during the evening before crossing eastern Victoria tonight. A cold southwesterly airstream will follow on Monday as a high pressure system south of the Bight moves rapidly east, reaching western Bass Strait by Monday night. The high will be located over the Tasman Sea by Tuesday night and continue moving east into Wednesday as warm northeasterly winds develop over Victoria.
Gunnamatta Beach Temperature Statistics View More
September Temperature
Cerberus (28km)
Lowest 18 September, 2026
2.4 °CAverage September
12.9 °CHighest 13 September, 2026
25.6 °C
Climate (2021–2026)
Cerberus (28km)
Average Low 2021–2026
10.2 °CAverage 2021–2026
14.6 °CAverage High 2021–2026
19.7 °C