Williamstown Weather Forecast
- 17
- 25
Becoming windy. Partly cloudy
- 17
- 27
Partly cloudy
- 16
- 29
Sunny
- 19
- 29
Partly cloudy
- 19
- 29
Mostly sunny
- 18
- 28
Cloud clearing
- 18
- 31
Mostly sunny
Today 16 Jan Melbourne
Partly cloudy. Medium chance of showers during the morning and afternoon. Winds southeasterly 30 to 45 km/h.
Port Phillip Local Waters
- Wind
- Southeasterly 20 to 30 knots.
- Seas
- 1 to 1.5 metres, increasing to 1 to 2 metres in the north.
- Weather
- Partly cloudy.
- Weather Situation
- A low pressure trough lies over eastern districts with an associated a low pressure system to the north of the state over southern NSW. This low remains near stationary until it moves northward on the weekend, reducing its influence over Victoria. A high pressure system will also drift south of Tasmania over the coming days and will extend a ridge across the state on the weekend once the low shifts northwards. Another trough of low pressure will move across the state early next week.
Williamstown Temperature Statistics View More
January Temperature
Laverton RAAF Base (12km)
Lowest 6 January, 2026
11.9 °CAverage January
20.2 °CHighest 9 January, 2026
44.4 °C
Climate (2021–Present)
Laverton RAAF Base (12km)
Average Low 2021–2026
10.5 °CAverage 2021–2026
15 °CAverage High 2021–2026
20.4 °C