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September Weather in Chemilly, France

Last updated: August 23, 2025

In Chemilly, France, the average temperature in September hovers around 18°C (64°F), offering a pleasant climate for outdoor activities. However, temperatures can vary significantly; expect a minimum of 5°C (41°F) and a maximum of 35°C (96°F). Precipitation levels average 65 mm (2.6 in) over 8 days, so a light raincoat may be advisable. With an average humidity of 78%, you'll feel a touch of that refreshing coastal breeze. Enjoy your time in this delightful locale!

September Temperature in Chemilly

In September in Chemilly, the average temperature is 18°C (64°F), with maximums reaching 35°C (96°F) and minimums dropping as low as 5°C (41°F). This moderate climate makes Chemilly a great destination for travelers seeking a pleasant escape.

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

The chart illustrates September temperature patterns in Chemilly, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chemilly, September typically has an average temperature of 18°C (64°F), with highs reaching up to 35°C (96°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec394347535968717064554642
Data source: Temperature data for Chemilly 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 Chemilly

In Chemilly in September, the total precipitation amount is 65 mm (2.6 in) spread over the course of 8 days.

September Precipitation Trends in Chemilly

The chart displays monthly precipitation patterns in Chemilly, 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 Chemilly, September typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec6552684390846348657270109
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Chemilly

In Chemilly in September, humidity is 78%. With an average temperature of 18°C (64°F), this humidity feels like a warm, thick blanket wrapping around you, making traveling feel a bit sticky and sluggish, yet the coolness of the air tempers the intensity, inviting you to explore at a leisurely pace.

September Average Humidity in Chemilly

This chart illustrates the average monthly humidity levels in Chemilly, 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 Chemilly is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%84%82%82%79%72%78%88%91%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chemilly

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

Maximum UV Index Levels in Chemilly for September

The chart shows the monthly maximum UV Index (UVI) for Chemilly 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 Chemilly typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986432
Data source: Chemilly 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 Chemilly Compares to Other Months

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

This table compares monthly weather conditions in Chemilly, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)65 mm (2.6 inches)91%low
February Weather6°C (44°F)52 mm (2.1 inches)89%moderate
March Weather8°C (48°F)68 mm (2.7 inches)86%moderate
April Weather12°C (53°F)43 mm (1.7 inches)84%high
May Weather15°C (59°F)90 mm (3.5 inches)82%very high
June Weather20°C (68°F)84 mm (3.3 inches)82%very high
July Weather22°C (71°F)63 mm (2.5 inches)79%very high
August Weather21°C (70°F)48 mm (1.9 inches)72%very high
September Weather18°C (64°F)65 mm (2.6 inches)78%high
October Weather13°C (55°F)72 mm (2.8 inches)88%moderate
November Weather8°C (46°F)70 mm (2.8 inches)91%moderate
December Weather6°C (43°F)109 mm (4.3 inches)93%low

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