Williamstown Climate by Month
The temperature in Williamstown can vary quite a bit throughout the year.
Temperatures can be warm during the warmest months,
and mild during the cooler months.
It receives a reasonable amount of rainfall.
Let’s explore the climate details in depth to provide you with a complete overview.
Average day and night temperature
Visitors to Williamstown can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 25°C in January. In July, the coolest month of the year, temperatures drop to a moderate 14°C. At night, expect cooler temperatures, averaging 7°C during this month.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Generally, Williamstown experiences moderate precipitation patterns, averaging 685 mm yearly. Williamstown experiences moderate seasonal variation in rainfall, with monthly averages ranging from 68 mm in September, the wettest month, and 40 mm in March, the driest month.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Williamstown can be enjoyed more throughout the sunniest month of January under a blue sky, with approximately 9.2 hours of sunshine daily. In contrast, the city experiences much darker days in June, with only 4.1 hours of sunlight per day.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average water temperature
The mean water temperature over the year in Williamstown ranges from 13°C in August to 17°C in January.
Water temperature over the year
Average humidity
The relative humidity is low throughout the year in Williamstown.
Relative humidity over the year
Average wind speed
The mean wind speed over the year in Williamstown ranges from 3°C in January to 3°C in January.
The mean monthly wind speed over the year (meters per second)
The best time of year to visit Williamstown in Australia
During the months of January, February, March, April, November and December you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
February has an average maximum temperature of 25°C and is the warmest month of the year.
The coldest month is August with an average maximum temperature of 14°C.
September tops the wettest month list with 68 mm of rainfall.
March is the driest month with 40 mm of precipitation.
January is the sunniest month with an average of 276 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
