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Williamstown Climate by Month

The graphs below provide an overview of the climate in Williamstown (South Australia), Australia. They present long-term patterns and averages of weather conditions over a 30-year period.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Forecast for Williamstown

Wed   Nov 13
20°C | 9°C
SW 18 km/h
broken clouds and no rain

broken clouds and no rain

Thu   Nov 14
21°C | 7°C
SW 14 km/h
almost clear and no rain

almost clear and no rain

Fri   Nov 15
28°C | 7°C
SE 11 km/h
almost clear and no rain

almost clear and no rain

The best time of year to visit Williamstown in Australia

During the months of March, April, October and November 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:

  • Which is the warmest month in Williamstown?
    January has an average maximum temperature of 29°C and is the warmest month of the year.
  • Which is the coldest month in Williamstown?
    The coldest month is August with an average maximum temperature of 15°C.
  • Which is the wettest month in Williamstown?
    September tops the wettest month list with 59 mm of rainfall.
  • Which is the driest month in Williamstown?
    March is the driest month with 18 mm of precipitation.
  • Which is the sunniest month in Williamstown?
    January is the sunniest month with an average of 326 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.