Last updated: August 23, 2025
In Rozoy-sur-Serre, France, the average temperature in September hovers around 15°C (60°F), but don’t be surprised by the extremes—minimums can dip to 4°C (39°F) while highs can soar to 34°C (93°F). Expect 61 mm (2.4 in) of precipitation over about 10 days, accompanied by a notable average humidity of 81%. Plan accordingly to make the most of your visit!
In September in Rozoy-sur-Serre, the average temperature is 15°C (60°F). The maximum can reach 34°C (93°F), while the minimum can be as low as 4°C (39°F). Travelers should be prepared for a wide range of temperatures, making layering essential for outdoor activities.
In Rozoy-sur-Serre in September, the precipitation amount is 61 mm (2.4 in) over a span of 10 days.
In Rozoy-sur-Serre in September, humidity is 81%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sluggish and draining, which can challenge even the best-prepared traveler.
In Rozoy-sur-Serre 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 Rozoy-sur-Serre, you can refer to this Hourly UV Index in Rozoy-sur-Serre.
UV Risk Categories
Weather in Rozoy-sur-Serre varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Rozoy-sur-Serre, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (38°F) | 85 mm (3.3 inches) | 91% | low |
| February Weather | 5°C (41°F) | 87 mm (3.4 inches) | 89% | moderate |
| March Weather | 7°C (45°F) | 92 mm (3.6 inches) | 86% | moderate |
| April Weather | 10°C (50°F) | 44 mm (1.7 inches) | 84% | high |
| May Weather | 13°C (57°F) | 71 mm (2.8 inches) | 82% | very high |
| June Weather | 18°C (65°F) | 65 mm (2.6 inches) | 82% | very high |
| July Weather | 19°C (67°F) | 70 mm (2.8 inches) | 80% | very high |
| August Weather | 19°C (66°F) | 74 mm (2.9 inches) | 76% | very high |
| September Weather | 15°C (60°F) | 61 mm (2.4 inches) | 81% | high |
| October Weather | 12°C (53°F) | 100 mm (3.9 inches) | 88% | moderate |
| November Weather | 7°C (44°F) | 76 mm (3.0 inches) | 92% | low |
| December Weather | 5°C (41°F) | 136 mm (5.3 inches) | 93% | low |