Gunnamatta Beach Weather Forecast
- 6
- 15
Partly cloudy
- 8
- 14
Shower
- 9
- 15
Cloudy
- 8
- 16
Partly cloudy
- 8
- 19
Partly cloudy
- 12
- 21
Shower
- 13
- 20
Shower
Today 8 Sep Mornington Peninsula
Mostly sunny day. Slight chance of a shower at night. Light winds becoming southwesterly 15 to 20 km/h in the evening then tending westerly 15 to 25 km/h in the late evening.
Central Victoria Coastal Waters
Cape Otway to Wilsons Promontory- Wind
- Westerly 15 to 20 knots increasing to 15 to 25 knots in the late afternoon. Winds reaching up to 30 knots in the evening.
- Seas
- Around 1 metre, increasing to 1.5 to 2.5 metres during the afternoon.
- 1st Swell
- Southwesterly 1 to 2 metres, increasing to 2 to 3 metres in the west.
- Weather
- Partly cloudy. 50% chance of showers in the evening.
- Weather Situation
- A high pressure system south of the Bight extends a ridge over Victoria. A weak cold front will clip southern Victoria this evening, before the high pressure system drifts eastward over Victoria later in the week, moving into the Tasman Sea by the weekend.
Gunnamatta Beach Temperature Statistics View More
September Temperature
Cerberus (28km)
Lowest 1 September, 2026
4.9 °CAverage September
13.1 °CHighest 5 September, 2026
17.6 °C
Climate (2021–2026)
Cerberus (28km)
Average Low 2021–2026
10.2 °CAverage 2021–2026
14.6 °CAverage High 2021–2026
19.7 °C