Last updated: August 23, 2025
In September, the average temperature in Saint-Hilaire-Saint-Mesmin, France is a pleasant 17°C (64°F). However, temperatures can fluctuate significantly, ranging from a chilly 4°C (40°F) to a sweltering 36°C (97°F). This month also sees an average precipitation of 43 mm (1.7 in), typically spread over 8 days, contributing to an average humidity level of 76%. Prepare for a month of variable weather and ensure you're ready for both warmth and the occasional shower!
In September in Saint-Hilaire-Saint-Mesmin, the average temperature is 17°C (64°F). Maximum temperatures can reach up to 36°C (97°F), while minimum temperatures can drop as low as 4°C (40°F). Travelers should be prepared for a wide range of temperatures, making layering essential for comfort during their visit.
In Saint-Hilaire-Saint-Mesmin in September, the total precipitation amount is 43 mm (1.7 in) over the course of 8 days.
In Saint-Hilaire-Saint-Mesmin in September, humidity is 76%. With an average temperature of 17°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel sluggish and draining, challenging travelers to stay hydrated and seek respite in shaded areas or air-conditioned spaces.
In Saint-Hilaire-Saint-Mesmin 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-Hilaire-Saint-Mesmin, you can refer to this Hourly UV Index in Saint-Hilaire-Saint-Mesmin.
UV Risk Categories
Weather in Saint-Hilaire-Saint-Mesmin varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Saint-Hilaire-Saint-Mesmin, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 61 mm (2.4 inches) | 90% | low |
| February Weather | 7°C (44°F) | 64 mm (2.5 inches) | 88% | moderate |
| March Weather | 9°C (48°F) | 68 mm (2.7 inches) | 85% | moderate |
| April Weather | 12°C (53°F) | 35 mm (1.4 inches) | 83% | high |
| May Weather | 15°C (59°F) | 80 mm (3.2 inches) | 83% | very high |
| June Weather | 19°C (67°F) | 68 mm (2.7 inches) | 79% | very high |
| July Weather | 21°C (71°F) | 43 mm (1.7 inches) | 71% | very high |
| August Weather | 21°C (70°F) | 41 mm (1.6 inches) | 68% | very high |
| September Weather | 17°C (64°F) | 43 mm (1.7 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 | 6°C (44°F) | 100 mm (3.9 inches) | 93% | low |