Last updated: March 2, 2024
The weather in Niagara Falls, Canada, during May is characterized by an average temperature of 13°C (56°F). Highs can soar to 26°C (80°F), while lows may dip to 3°C (38°F). Typically, the humidity level in Niagara Falls throughout May hovers around 82%.
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Average temperature
Maximum temperature
Humidity
In May, Niagara Falls averages 101 mm (4.0 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 14 hours 39 minutes of daylight, with the sun shining for approximately 9 hours 24 minutes each day. Additionally, there is a 45% probability of sunny days during this period.
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Chance of sun
In May, the UV Index in Niagara Falls reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 2 | 3 | 5 | 7 | 8 | 9 | 9 | 7 | 5 | 3 | 2 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||