Last updated: August 23, 2025
In September, the average temperature in Le Chatelet, France hovers around 17°C (64°F). While you can expect a minimum of 4°C (39°F), temperatures can soar to a maximum of 36°C (96°F). Be prepared for a sprinkle of rain, as 57 mm (2.3 in) of precipitation is likely spread across 7 days, with an average humidity of 76% adding to the overall atmosphere.
In September in Le Chatelet, the average temperature is 17°C (64°F), with maximums reaching up to 36°C (96°F) and minimums dropping as low as 4°C (39°F). It's a month of diverse weather, so be prepared for a mix of warm and cool conditions while traveling.
In Le Chatelet in September, the precipitation amount is 57 mm (2.3 in) over a span of 7 days.
In Le Chatelet 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 Le Chatelet 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 Le Chatelet, you can refer to this Hourly UV Index in Le Chatelet.
UV Risk Categories
Weather in Le Chatelet varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Le Chatelet, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 60 mm (2.4 inches) | 90% | low |
| February Weather | 7°C (44°F) | 60 mm (2.4 inches) | 88% | moderate |
| March Weather | 9°C (48°F) | 66 mm (2.6 inches) | 85% | moderate |
| April Weather | 12°C (53°F) | 48 mm (1.9 inches) | 83% | high |
| May Weather | 15°C (59°F) | 81 mm (3.2 inches) | 83% | very high |
| June Weather | 20°C (68°F) | 72 mm (2.8 inches) | 79% | very high |
| July Weather | 21°C (71°F) | 52 mm (2.0 inches) | 71% | very high |
| August Weather | 21°C (70°F) | 42 mm (1.7 inches) | 68% | very high |
| September Weather | 17°C (64°F) | 57 mm (2.3 inches) | 76% | high |
| October Weather | 13°C (56°F) | 70 mm (2.7 inches) | 87% | moderate |
| November Weather | 8°C (47°F) | 68 mm (2.7 inches) | 91% | low |
| December Weather | 6°C (44°F) | 102 mm (4.0 inches) | 93% | low |