Last updated: August 23, 2025
In September, the average temperature in Chatillon-Saint-Jean, France hovers around 17°C (63°F). You can expect a minimum drop to 3°C (38°F), while the mercury can soar up to a maximum of 31°C (88°F). Be prepared for some rain, as precipitation averages 47 mm (1.8 in) over 7 days. The air will feel quite humid, with an average humidity level of 73%.
In September in Chatillon-Saint-Jean, the average temperature is 17°C (63°F). Maximum temperatures can reach 31°C (88°F), while minimum temperatures can drop as low as 3°C (38°F). It's a great time to visit Chatillon-Saint-Jean, as the weather is mild and suitable for various outdoor activities.
In Chatillon-Saint-Jean in September, the precipitation amount is 47 mm (1.8 in) during a span of 7 days.
In Chatillon-Saint-Jean in September humidity is 73%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making it ideal for leisurely strolling through vibrant markets or exploring outdoor attractions, though travelers may want to stay hydrated and take breaks in shaded areas to fully enjoy the atmosphere.
In Chatillon-Saint-Jean in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Chatillon-Saint-Jean.
UV Risk Categories
Weather in Chatillon-Saint-Jean varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Chatillon-Saint-Jean, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (36°F) | 71 mm (2.8 inches) | 91% | low |
| February Weather | 5°C (42°F) | 71 mm (2.8 inches) | 87% | moderate |
| March Weather | 8°C (46°F) | 84 mm (3.3 inches) | 84% | moderate |
| April Weather | 11°C (51°F) | 59 mm (2.3 inches) | 83% | high |
| May Weather | 14°C (58°F) | 130 mm (5.1 inches) | 78% | very high |
| June Weather | 19°C (66°F) | 92 mm (3.6 inches) | 75% | very high |
| July Weather | 21°C (71°F) | 55 mm (2.2 inches) | 72% | very high |
| August Weather | 21°C (70°F) | 53 mm (2.1 inches) | 63% | very high |
| September Weather | 17°C (63°F) | 47 mm (1.8 inches) | 73% | high |
| October Weather | 12°C (54°F) | 102 mm (4.0 inches) | 89% | moderate |
| November Weather | 7°C (44°F) | 104 mm (4.1 inches) | 90% | moderate |
| December Weather | 4°C (39°F) | 150 mm (5.9 inches) | 90% | low |