Williamstown Weather Forecast
- 11
- 17
Cloudy
- 5
- 20
Mostly sunny
- 10
- 22
Mostly sunny
- 10
- 24
Mostly sunny
- 13
- 24
Mostly sunny
- 14
- 23
Sunny
- 13
- 25
Mostly sunny
Today 18 Apr Melbourne
Cloudy. Winds southerly 15 to 20 km/h becoming light in the late afternoon.
Port Phillip Local Waters
- Wind
- South to southwesterly 10 to 15 knots becoming south to southeasterly below 10 knots in the late afternoon then becoming easterly in the late evening.
- Seas
- Below 1 metre.
- Weather
- Cloudy.
- Weather Situation
- A high pressure system directs cool southerly flow across the state. This high pressure system will gradually move across the state on the weekend ahead of a weakening trough later on Sunday. A high pressure system will move south of Tasmanian early next week maintaining a ridge over Victoria.
Williamstown Temperature Statistics View More
April Temperature
Laverton RAAF Base (12km)
Lowest 5 April, 2026
8 °CAverage April
16.2 °CHighest 1 April, 2026
29.4 °C
Climate (2021–Present)
Laverton RAAF Base (12km)
Average Low 2021–2026
10.5 °CAverage 2021–2026
15.1 °CAverage High 2021–2026
20.5 °C