Last updated: August 23, 2025
In September, the average temperature in Saint-Aignan, France is a pleasant 18°C (64°F), making it an ideal time to explore the area. However, be prepared for a range in temperatures, with minimums dropping to 4°C (40°F) and maximums soaring to 37°C (98°F). During this month, precipitation amounts reach 41 mm (1.6 in) over approximately 6 days, accompanied by an average humidity of 76%.
In September in Saint-Aignan, the average temperature is 18°C (64°F). The maximum can reach 37°C (98°F), while the minimum can drop to as low as 4°C (40°F). Be prepared for a wide range of temperatures, making it essential to pack both light clothing for warm days and layers for cooler nights.
In Saint-Aignan in September, the precipitation amount is 41 mm (1.6 in) over the course of 6 days.
In Saint-Aignan in September, humidity is 76%. With an average temperature of 18°C (64°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities feel steamy and invigorating—perfect for exploring charming streets, though you might want to take breaks in the shade.
In Saint-Aignan in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Saint-Aignan, you can refer to this Hourly UV Index in Saint-Aignan.
UV Risk Categories
Weather in Saint-Aignan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Saint-Aignan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 58 mm (2.3 inches) | 90% | low |
| February Weather | 7°C (45°F) | 62 mm (2.5 inches) | 88% | moderate |
| March Weather | 9°C (48°F) | 69 mm (2.7 inches) | 85% | moderate |
| April Weather | 12°C (54°F) | 44 mm (1.7 inches) | 83% | high |
| May Weather | 15°C (60°F) | 79 mm (3.1 inches) | 83% | very high |
| June Weather | 20°C (68°F) | 69 mm (2.7 inches) | 79% | very high |
| July Weather | 22°C (71°F) | 40 mm (1.6 inches) | 71% | very high |
| August Weather | 21°C (70°F) | 32 mm (1.3 inches) | 68% | very high |
| September Weather | 18°C (64°F) | 41 mm (1.6 inches) | 76% | high |
| October Weather | 13°C (56°F) | 79 mm (3.1 inches) | 87% | moderate |
| November Weather | 8°C (47°F) | 68 mm (2.7 inches) | 91% | low |
| December Weather | 7°C (44°F) | 97 mm (3.8 inches) | 93% | low |