Sarnia Weather in December
What's the weather like in Sarnia (Ontario) in December 2024?
The climate in Sarnia during December can be summarized as cold and reasonably dry.
December is in the winter in Sarnia and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a freezing 1°C (34°F), whilst at night -5°C (23°F) is normal.
| Daytime temperature | 1.2°C 34.2°F |
|---|---|
| Nightly temperature | -5°C 23°F |
| Average temperature | -1.9°C 28.6°F |
| Daily sunshine | 2.3 hrs |
| Avg rainfall | 75 mm 3 ins |
| Rainy days | 12 days |
| Sea temperature | 4.9°C 40.9°F |
| Humidity | 80% |
| Windspeed | 18kph 11 mph |
On average December is the 4th wettest month of the year in Sarnia with around 75mm 3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 2.3 hours of sunshine per day.
December temperatures in Sarnia
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Sarnia in December 2024.
Other monthly averages
Best places to visit in December
Sarnia weather stats
| Hottest month: | July | 26.5°C 79.7°F |
|---|---|---|
| Driest month: | February | 54mm 2.1ins |
| Sunniest month: | July | 9.9hrs |
| Coldest month: | January | -1.9°C 28.6°F |
| Wettest month: | June | 82mm 3.2ins |
© Google
Locations nearby
Top Canada locations
- Calgary
- Edmonton
- Halifax
- Montréal
- Niagara Falls
- Ottawa
- Québec
- St. John's
- Toronto
- Vancouver
- Whistler
- Winnipeg