The weather in Williamstown in July is hot. The average temperatures are between 21°C and 30°C.
You can expect rain for roughly half of the month of July in Williamstown. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Williamstown in July 2025.
If you’re planning to visit Williamstown in the near future, we highly recommend that you review the 14 day weather forecast for Williamstown before you arrive.
Temperatures
30° / 21°
Rainy Days
11
Snowy Days
0
Dry Days
20
Rainfall
124
mm
Sun Hours
7.6
Hrs
