Last updated: June 18, 2025
The average temperature in Saint-Nazaire, Canada during August is a pleasant 18°C (65°F). Expect temperatures to range from a cool 5°C (41°F) to a warm 32°C (89°F). Be prepared for some rain, as the month sees an average precipitation amount of 116 mm (4.6 in) spread over 14 days. With an average humidity of 84%, it’s a month where you can feel the lushness of nature comes alive!
In August in Saint-Nazaire, the average temperature is 18°C (65°F), with maximums reaching 32°C (89°F) and minimums dropping as low as 5°C (41°F). This range makes it a great time for outdoor activities and exploring the local attractions, so pack accordingly!
In Saint-Nazaire in August, the total precipitation amount is 116 mm (4.6 in) spread over a duration of 14 days.
In Saint-Nazaire in August, humidity is 84%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and slightly uncomfortable as the air clings to your skin and limits your breath.
In Saint-Nazaire in August, 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 August’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 |