Last updated: August 23, 2025
In September, the average temperature in Fontenay-sur-Loing, France hovers around 17°C (63°F), making it a comfortable time to explore. Temperatures can vary, with a minimum as low as 4°C (40°F) and peaking at a warm 35°C (96°F). Expect approximately 54 mm (2.1 in) of precipitation over about 7 days, accompanied by an average humidity level of 78%. Stay prepared for a mix of delightful weather and occasional showers!
In September in Fontenay-sur-Loing, the average temperature is 17°C (63°F). Maximum temperatures can reach 35°C (96°F), while minimum temperatures can drop as low as 4°C (40°F). This variability makes it essential for travelers to pack accordingly, ensuring comfort whether they encounter warm days or cool nights.
In Fontenay-sur-Loing in September, the precipitation amount is 54 mm (2.1 in) over a duration of 7 days.
In Fontenay-sur-Loing in September, humidity is 78%. With an average temperature of 17°C (63°F), this humidity feels like a warm, enveloping blanket, making traveling slightly uncomfortable as you navigate the sticky air, prompting the need for frequent breaks in cooler, shaded areas.
In Fontenay-sur-Loing 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 Fontenay-sur-Loing, you can refer to this Hourly UV Index in Fontenay-sur-Loing.
UV Risk Categories
Weather in Fontenay-sur-Loing varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Fontenay-sur-Loing, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 68 mm (2.7 inches) | 91% | low |
| February Weather | 6°C (44°F) | 64 mm (2.5 inches) | 89% | moderate |
| March Weather | 8°C (48°F) | 73 mm (2.9 inches) | 86% | moderate |
| April Weather | 11°C (53°F) | 32 mm (1.2 inches) | 84% | high |
| May Weather | 15°C (59°F) | 82 mm (3.2 inches) | 82% | very high |
| June Weather | 19°C (67°F) | 60 mm (2.3 inches) | 82% | very high |
| July Weather | 21°C (70°F) | 46 mm (1.8 inches) | 79% | very high |
| August Weather | 21°C (69°F) | 43 mm (1.7 inches) | 72% | very high |
| September Weather | 17°C (63°F) | 54 mm (2.1 inches) | 78% | high |
| October Weather | 13°C (56°F) | 78 mm (3.1 inches) | 88% | moderate |
| November Weather | 8°C (46°F) | 62 mm (2.4 inches) | 91% | low |
| December Weather | 6°C (43°F) | 103 mm (4.1 inches) | 93% | low |