Sarnia Weather in July
What's the weather like in Sarnia (Ontario) in July 2024?
The climate in Sarnia during July can be summarized as warm, humid and reasonably dry.
July is in the summer in Sarnia and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 16°C (61°F) is normal.
| Daytime temperature | 26.8°C 80.2°F |
|---|---|
| Nightly temperature | 16.3°C 61.3°F |
| Average temperature | 21.5°C 70.7°F |
| Daily sunshine | 9.9 hrs |
| Avg rainfall | 71 mm 2.8 ins |
| Rainy days | 9 days |
| Sea temperature | 21.6°C 70.9°F |
| Humidity | 71% |
| Windspeed | 12.6kph 8 mph |
On average July is the 6th wettest month of the year in Sarnia with around 71mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.9 hours of sunshine per day.
July temperatures in Sarnia
July rainfall
July 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 July 2024.
Other monthly averages
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 |
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