Last updated: August 23, 2025
In September, the average temperature in Champagne-sur-Seine, France hovers around 17°C (63°F). Expect permissible extremes with a minimum of 5°C (41°F) and a blistering maximum of 35°C (95°F). You'll experience 54 mm (2.1 in) of precipitation over roughly 8 days, contributing to an average humidity of 81%. Prepare accordingly for a mix of warm days and refreshing showers!
In September in Champagne-sur-Seine, the average temperature is 17°C (63°F). Maximum temperatures can reach 35°C (95°F), while minimum temperatures can drop as low as 5°C (41°F). When traveling during this month, it's advisable to pack a variety of clothing to accommodate the wide range of temperatures.
In Champagne-sur-Seine in September, the total precipitation amount reaches 54 mm (2.1 in) over a span of 8 days.
In Champagne-sur-Seine in September humidity is 81%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making travel slightly oppressive and calling for frequent breaks in air-conditioned spaces to recharge and enjoy your journey comfortably.
In Champagne-sur-Seine 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 Champagne-sur-Seine, you can refer to this Hourly UV Index in Champagne-sur-Seine.
UV Risk Categories
Weather in Champagne-sur-Seine varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Champagne-sur-Seine, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 64 mm (2.5 inches) | 91% | low |
| February Weather | 6°C (43°F) | 67 mm (2.6 inches) | 89% | moderate |
| March Weather | 8°C (47°F) | 72 mm (2.8 inches) | 86% | moderate |
| April Weather | 11°C (53°F) | 31 mm (1.2 inches) | 84% | high |
| May Weather | 15°C (59°F) | 71 mm (2.8 inches) | 82% | very high |
| June Weather | 19°C (67°F) | 62 mm (2.4 inches) | 82% | very high |
| July Weather | 21°C (70°F) | 49 mm (1.9 inches) | 80% | very high |
| August Weather | 20°C (69°F) | 52 mm (2.0 inches) | 76% | very high |
| September Weather | 17°C (63°F) | 54 mm (2.1 inches) | 81% | high |
| October Weather | 13°C (55°F) | 82 mm (3.2 inches) | 88% | moderate |
| November Weather | 8°C (46°F) | 66 mm (2.6 inches) | 92% | low |
| December Weather | 6°C (43°F) | 108 mm (4.2 inches) | 93% | low |