Last updated: March 2, 2024
The weather in Saint-Thomas, Canada, during May is characterized by an average temperature of 13°C (56°F). Highs can soar to 30°C (87°F), while lows may dip to 0°C (32°F). Typically, the humidity level in Saint-Thomas throughout May hovers around 80%.
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Average temperature
Maximum temperature
Humidity
In May, Saint-Thomas averages 96 mm (3.8 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 14 hours 58 minutes of daylight, with the sun shining for approximately 9 hours 22 minutes each day. Additionally, there is a 42% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In May, the UV Index in Saint-Thomas reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 4 | 6 | 8 | 9 | 9 | 8 | 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 | ||||||