St. Catharines Weather in May
What's the weather like in St. Catharines (Ontario) in May 2024?
The climate in St. Catharines during May can be summarized as mild and reasonably dry.
May is in the spring in St. Catharines and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 18°C (65°F), whilst at night 8°C (46°F) is normal.
| Daytime temperature | 18.3°C 64.9°F |
|---|---|
| Nightly temperature | 7.5°C 45.5°F |
| Average temperature | 12.9°C 55.2°F |
| Daily sunshine | 8 hrs |
| Avg rainfall | 71 mm 2.8 ins |
| Rainy days | 11 days |
| Sea temperature | 6.7°C 44°F |
| Humidity | 67% |
| Windspeed | 14.8kph 9 mph |
On average May is the 6th wettest month of the year in St. Catharines with around 71mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 8 hours of sunshine per day.
May temperatures in St. Catharines
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 St. Catharines in May 2024.
Other monthly averages
St. Catharines weather stats
| Hottest month: | July | 26.7°C 80.1°F |
|---|---|---|
| Driest month: | January | 50mm 2ins |
| Sunniest month: | July | 9.9hrs |
| Coldest month: | January | -0.7°C 30.7°F |
| Wettest month: | September | 84mm 3.3ins |
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