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Sarnia
Weather averages
ClimateForecastNovemberDecember >>

Sarnia Climate by Month

The graphs below provide an overview of the climate in Sarnia (Ontario), Canada. 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.

Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Forecast for Sarnia

Tue   Nov 05
23°C | 17°C
S 29 km/h
4.3 mm
broken clouds and chance of rain

broken clouds and chance of rain

hourly forecast
Wed   Nov 06
18°C | 10°C
W 22 km/h
2.5 mm
partly cloudy and small chance of slight rain

partly cloudy and small chance of slight rain

hourly forecast
Thu   Nov 07
14°C | 7°C
N 14 km/h
clear and no rain

clear and no rain

hourly forecast
5-Day Forecast 10-Day Forecast

The best time of year to visit Sarnia in Canada

During the months of June and September 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 Sarnia?
    July has an average maximum temperature of 27°C and is the warmest month of the year.
  • Which is the coldest month in Sarnia?
    The coldest month is January with an average maximum temperature of 0°C.
  • Which is the wettest month in Sarnia?
    June tops the wettest month list with 97 mm of rainfall.
  • Which is the driest month in Sarnia?
    March is the driest month with 66 mm of precipitation.

    • 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.

     

     


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