Williamstown Beach Weather Forecast
- 9
- 16
Mostly clear
- 7
- 22
Mostly sunny
- 13
- 25
Sunny
- 14
- 27
Windy. Mostly sunny
- 11
- 15
Possible shower
- 7
- 17
Partly cloudy
- 7
- 21
Mostly sunny
Today 17 Sep Melbourne
Mostly clear. Light winds.
Port Phillip Local Waters
- Wind
- West to southwesterly about 10 knots.
- Seas
- Below 0.5 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A strong high pressure system centred over western Victoria will move slowly over NSW before a cold front crosses the State on Sunday. A new high pressure system will approach the State following the cold front.
Williamstown Beach Temperature Statistics View More
September Temperature
Laverton RAAF Base (11km)
Lowest 8 September, 2026
3.4 °CAverage September
13 °CHighest 13 September, 2026
24.9 °C
Climate (2021–2026)
Laverton RAAF Base (11km)
Average Low 2021–2026
10.6 °CAverage 2021–2026
15.2 °CAverage High 2021–2026
20.6 °C