Sarnia Weather in May
What's the weather like in Sarnia (Ontario) in May 2024?
The climate in Sarnia during May can be summarized as mild and reasonably dry.
May is in the spring in Sarnia and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 8°C (46°F) is normal.
| Daytime temperature | 18.7°C 65.6°F |
|---|---|
| Nightly temperature | 7.8°C 46°F |
| Average temperature | 13.2°C 55.8°F |
| Daily sunshine | 8.4 hrs |
| Avg rainfall | 68 mm 2.7 ins |
| Rainy days | 10 days |
| Sea temperature | 9°C 48.1°F |
| Humidity | 67% |
| Windspeed | 15.5kph 10 mph |
On average May is the 5th driest month of the year in Sarnia with around 68mm 2.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.4 hours of sunshine per day.
May temperatures in Sarnia
May rainfall
May 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 May 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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