Williamstown Beach Weather Forecast
- 11
- 15
Possible morning shower
- 6
- 17
Sunny
- 7
- 22
Sunny
- 12
- 26
Partly cloudy
- 17
- 28
Possible shower
- 14
- 19
Shower or two
- 11
- 23
Partly cloudy
Today 21 Sep Melbourne
Cloudy. High chance of showers about the Dandenongs, medium chance elsewhere. Winds west to southwesterly 15 to 25 km/h tending south to southwesterly 20 to 30 km/h in the early morning then becoming light in the evening.
Port Phillip Local Waters
- Wind
- Westerly 15 to 20 knots, reaching up to 25 knots in the south early in the morning. Winds turning southerly 10 to 15 knots in the late morning and early afternoon.
- Seas
- 1 to 1.5 metres, decreasing to 1 metre during the afternoon.
- Weather
- Partly cloudy.
Williamstown Beach Temperature Statistics View More
September Temperature
Laverton RAAF Base (11km)
Lowest 18 September, 2026
3.1 °CAverage September
13.7 °CHighest 19 September, 2026
27.7 °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