Last updated: August 23, 2025
In Quettreville-sur-Sienne, France, the average temperature in September hovers around 17°C (62°F), with minimums dipping to 9°C (49°F) and maximums reaching up to 28°C (82°F). Expect about 85 mm (3.3 in) of precipitation spread over roughly 13 days, contributing to an average humidity level of 79%.
In September in Quettreville-sur-Sienne, the average temperature is 17°C (62°F). Maximum temperatures can reach 28°C (82°F), while minimums can drop to as low as 9°C (49°F). This mild weather makes Quettreville-sur-Sienne an ideal destination for travelers seeking a comfortable climate.
In Quettreville-sur-Sienne in September, the precipitation amount is 85 mm (3.3 in) spread over 13 days.
In Quettreville-sur-Sienne in September humidity is 79%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket wrapping around you, making strolling through the streets a bit heavier but still comfortably refreshing for travelers.
In Quettreville-sur-Sienne 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 Quettreville-sur-Sienne, you can refer to this Hourly UV Index in Quettreville-sur-Sienne.
UV Risk Categories
Weather in Quettreville-sur-Sienne varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Quettreville-sur-Sienne, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (45°F) | 96 mm (3.8 inches) | 90% | low |
| February Weather | 8°C (46°F) | 93 mm (3.7 inches) | 89% | moderate |
| March Weather | 9°C (48°F) | 91 mm (3.6 inches) | 86% | moderate |
| April Weather | 11°C (51°F) | 42 mm (1.7 inches) | 84% | high |
| May Weather | 13°C (56°F) | 82 mm (3.2 inches) | 80% | high |
| June Weather | 16°C (62°F) | 81 mm (3.2 inches) | 80% | very high |
| July Weather | 18°C (65°F) | 62 mm (2.4 inches) | 69% | very high |
| August Weather | 18°C (65°F) | 77 mm (3.1 inches) | 73% | very high |
| September Weather | 17°C (62°F) | 85 mm (3.3 inches) | 79% | high |
| October Weather | 14°C (57°F) | 146 mm (5.7 inches) | 89% | moderate |
| November Weather | 10°C (51°F) | 115 mm (4.5 inches) | 92% | low |
| December Weather | 9°C (48°F) | 176 mm (6.9 inches) | 92% | low |