September Weather in Cesson, France

Last updated: August 23, 2025

In September, the average temperature in Cesson, France hovers around 17°C (63°F), with a minimum dipping to 5°C (40°F) and a maximum soaring to 35°C (95°F). Expect approximately 54 mm (2.1 in) of precipitation spread over 8 days, and enjoy an average humidity level of 76%.

September Temperature in Cesson

In September in Cesson, the average temperature is 17°C (63°F), with maximums reaching up to 35°C (95°F) and minimums dropping as low as 5°C (40°F). This variation in temperature makes it essential for travelers to pack accordingly, ensuring a comfortable experience regardless of the weather fluctuations.

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

The chart illustrates September temperature patterns in Cesson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cesson, September typically has an average temperature of 17°C (63°F), with highs reaching up to 35°C (95°F) and lows dropping to around 5°C (40°F).

Data source: Temperature data for Cesson generated using information from the Copernicus Climate Change Service.

September Precipitation in Cesson

In Cesson in September, the total precipitation amount reaches 54 mm (2.1 in) over a span of 8 days.

September Precipitation Trends in Cesson

The chart displays monthly precipitation patterns in Cesson, 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 Cesson, September typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Cesson

In Cesson in September humidity is 76%. With an average temperature of 17°C (63°F), this humidity feels like traveling through a warm, enveloping blanket, making every outdoor adventure feel sticky and heavy, yet pleasantly refreshing when you find a cool breeze.

September Average Humidity in Cesson

This chart illustrates the average monthly humidity levels in Cesson, 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 Cesson is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cesson

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

Maximum UV Index Levels in Cesson for September

The chart shows the monthly maximum UV Index (UVI) for Cesson 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 Cesson typically reaches 6, which falls under the high exposure category.

Data source: Cesson 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 Cesson Compares to Other Months

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

This table compares monthly weather conditions in Cesson, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	59 mm (2.3 inches)	91%	low
February Weather	6°C (43°F)	66 mm (2.6 inches)	89%	moderate
March Weather	8°C (47°F)	72 mm (2.8 inches)	85%	moderate
April Weather	11°C (52°F)	30 mm (1.2 inches)	84%	high
May Weather	15°C (58°F)	74 mm (2.9 inches)	82%	very high
June Weather	19°C (66°F)	66 mm (2.6 inches)	80%	very high
July Weather	21°C (70°F)	46 mm (1.8 inches)	73%	very high
August Weather	20°C (69°F)	52 mm (2.0 inches)	68%	very high
September Weather	17°C (63°F)	54 mm (2.1 inches)	76%	high
October Weather	13°C (55°F)	79 mm (3.1 inches)	88%	moderate
November Weather	8°C (46°F)	65 mm (2.5 inches)	92%	low
December Weather	6°C (43°F)	102 mm (4.0 inches)	93%	low