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September Weather in Chavanay, France

Last updated: August 23, 2025

In Chavanay, France, the average temperature in September hovers around 18°C (64°F), with fluctuating extremes that can dip as low as 4°C (39°F) or rise to a sweltering 33°C (91°F). Rainfall is expected, averaging 56 mm (2.2 in) over the course of 8 days. Additionally, the atmosphere is quite humid, with an average humidity level of 72%, adding a distinct feel to the climate.

September Temperature in Chavanay

In September in Chavanay, the average temperature is 18°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping as low as 4°C (39°F). It's a great time for travelers to enjoy a diverse range of outdoor activities, from warm daytime excursions to cooler evenings.

September Weather in Chavanay: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Chavanay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chavanay, September typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec384347535968727164554541
Data source: Temperature data for Chavanay generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Chavanay

In Chavanay in September, the precipitation amount is 56 mm (2.2 in) over the course of 8 days.

September Precipitation Trends in Chavanay

The chart displays monthly precipitation patterns in Chavanay, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Chavanay, September typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec60526751123868262569393109
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Chavanay

In Chavanay in September, humidity is 72%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable as the air clings to your skin, leaving you longing for a refreshing breeze.

September Average Humidity in Chavanay

This chart illustrates the average monthly humidity levels in Chavanay, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Chavanay is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%88%84%81%77%76%68%61%72%88%91%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chavanay

In Chavanay 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 Chavanay, you can refer to this Hourly UV Index in Chavanay.

Maximum UV Index Levels in Chavanay for September

The chart shows the monthly maximum UV Index (UVI) for Chavanay in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Chavanay typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2356810986532
Data source: Chavanay September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Chavanay Compares to Other Months

Weather in Chavanay varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Chavanay, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Chavanay, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)60 mm (2.3 inches)91%low
February Weather6°C (43°F)52 mm (2.0 inches)88%moderate
March Weather8°C (47°F)67 mm (2.6 inches)84%moderate
April Weather11°C (53°F)51 mm (2.0 inches)81%high
May Weather15°C (60°F)123 mm (4.8 inches)77%very high
June Weather20°C (68°F)86 mm (3.4 inches)76%very high
July Weather22°C (72°F)82 mm (3.2 inches)68%very high
August Weather22°C (71°F)62 mm (2.4 inches)61%very high
September Weather18°C (64°F)56 mm (2.2 inches)72%high
October Weather13°C (55°F)93 mm (3.7 inches)88%moderate
November Weather7°C (45°F)93 mm (3.7 inches)91%moderate
December Weather5°C (41°F)109 mm (4.3 inches)92%low

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