Gunnamatta Beach Weather Forecast
- 12
- 18
Storm
- 10
- 16
Shower
- 9
- 15
Shower
- 8
- 16
Shower
- 9
- 14
Cloudy
- 9
- 15
Partly cloudy
- 7
- 16
Cloudy
Today 5 Sep Mornington Peninsula
Cloudy. Very high chance of showers. The chance of a thunderstorm this afternoon, possibly severe with damaging winds. Winds northerly 35 to 50 km/h turning westerly 25 to 40 km/h in the middle of the day.
Central Victoria Coastal Waters
Cape Otway to Wilsons Promontory- Wind
- North to northwesterly 20 to 30 knots turning westerly 25 to 30 knots in the early afternoon. Winds reaching up to 35 knots in the far west in the afternoon.
- Seas
- 1 to 2 metres, increasing to 2 to 3 metres during the morning.
- 1st Swell
- West to southwesterly 2 to 3 metres, increasing to 2.5 to 4 metres in the far west.
- Weather
- Partly cloudy. 95% chance of showers. The chance of a thunderstorm during the morning and afternoon with possible squalls.
- Weather Situation
- Strong northerly airflow as a cold front approaches from the west, crossing Bass Strait today with a vigorous westerly airstream developing as an associated low pressure system crosses Tasmania. Winds will ease on Sunday as a high pressure ridge extends over Victoria and persists into early next week.
Gunnamatta Beach Temperature Statistics View More
September Temperature
Cerberus (28km)
Lowest 1 September, 2026
4.9 °CAverage September
12.7 °CHighest 3 September, 2026
17 °C
Climate (2021–2026)
Cerberus (28km)
Average Low 2021–2026
10.2 °CAverage 2021–2026
14.6 °CAverage High 2021–2026
19.7 °C