Last updated: June 18, 2025
In May, the average temperature in Saint-Nazaire, Canada is a comfortable 10°C (51°F). However, expect a minimum chill of -5°C (23°F) and the occasional peak of 33°C (92°F). During this month, average precipitation reaches 95 mm (3.7 in) over approximately 13 days, with an average humidity of 80%. Be prepared for varying conditions!
In May in Saint-Nazaire, the average temperature is 10°C (51°F). The maximum can reach 33°C (92°F) and the minimum can drop as low as -5°C (23°F). Be sure to pack for a range of weather conditions when traveling to Saint-Nazaire during this time.
In Saint-Nazaire in May, the precipitation amount is 95 mm (3.7 in) over the course of 13 days.
In Saint-Nazaire in May, humidity is 80%. With an average temperature of 10°C (51°F), this humidity feels like a damp layer clinging to the skin, making outdoor activities uncomfortable and requiring travelers to dress in layers to cope with the chill and moisture in the air.
In Saint-Nazaire in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Saint-Nazaire.
UV Risk Categories
Weather in Saint-Nazaire varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Saint-Nazaire, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -13°C (9°F) | 66 mm (2.6 inches) | 96% | low |
| February Weather | -12°C (11°F) | 59 mm (2.3 inches) | 94% | moderate |
| March Weather | -6°C (22°F) | 81 mm (3.2 inches) | 91% | moderate |
| April Weather | 2°C (36°F) | 86 mm (3.4 inches) | 90% | high |
| May Weather | 10°C (51°F) | 95 mm (3.7 inches) | 80% | very high |
| June Weather | 16°C (61°F) | 83 mm (3.3 inches) | 73% | very high |
| July Weather | 20°C (68°F) | 122 mm (4.8 inches) | 81% | very high |
| August Weather | 18°C (65°F) | 116 mm (4.6 inches) | 84% | very high |
| September Weather | 13°C (56°F) | 125 mm (4.9 inches) | 85% | high |
| October Weather | 7°C (44°F) | 123 mm (4.8 inches) | 89% | moderate |
| November Weather | -1°C (30°F) | 99 mm (3.9 inches) | 91% | low |
| December Weather | -10°C (15°F) | 77 mm (3.0 inches) | 97% | low |