September Weather in Chauny, France

Last updated: August 23, 2025

In September, the average temperature in Chauny, France is a pleasant 16°C (62°F). Expect a variation where it can dip to a minimum of 5°C (40°F) and soar to a maximum of 34°C (93°F). With an average precipitation of 47 mm (1.8 in) over 8 days, make sure to pack accordingly. The climate's average humidity sits at a comfortable 81%, adding to the region's unique charm.

September Temperature in Chauny

In September in Chauny, the average temperature is 16°C (62°F). Maximum temperatures can reach 34°C (93°F), while minimum temperatures can drop as low as 5°C (40°F). Be sure to pack layers for your trip, as temperatures can vary significantly throughout the day.

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

The chart illustrates September temperature patterns in Chauny, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chauny, September typically has an average temperature of 16°C (62°F), with highs reaching up to 34°C (93°F) and lows dropping to around 5°C (40°F).

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

September Precipitation in Chauny

In Chauny in September, the precipitation amount is 47 mm (1.8 in) over the course of 8 days.

September Precipitation Trends in Chauny

The chart displays monthly precipitation patterns in Chauny, 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 Chauny, September typically receives around 47 mm (1.8 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 Chauny

In Chauny in September, humidity is 81%. With an average temperature of 16°C (62°F), this humidity feels like a warm embrace that can quickly leave travelers feeling sticky and drained, making outdoor adventures a bit challenging unless they stay properly hydrated and take breaks in the shade.

September Average Humidity in Chauny

This chart illustrates the average monthly humidity levels in Chauny, 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 Chauny is approximately 81%, 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 Chauny

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

Maximum UV Index Levels in Chauny for September

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

Data source: Chauny 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 Chauny Compares to Other Months

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

This table compares monthly weather conditions in Chauny, 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)	66 mm (2.6 inches)	91%	low
February Weather	6°C (43°F)	72 mm (2.8 inches)	89%	moderate
March Weather	8°C (46°F)	70 mm (2.7 inches)	86%	moderate
April Weather	11°C (51°F)	35 mm (1.4 inches)	84%	high
May Weather	14°C (58°F)	60 mm (2.4 inches)	82%	very high
June Weather	19°C (66°F)	58 mm (2.3 inches)	82%	very high
July Weather	20°C (68°F)	51 mm (2.0 inches)	80%	very high
August Weather	20°C (68°F)	68 mm (2.7 inches)	76%	very high
September Weather	16°C (62°F)	47 mm (1.8 inches)	81%	high
October Weather	12°C (55°F)	79 mm (3.1 inches)	88%	moderate
November Weather	7°C (46°F)	66 mm (2.6 inches)	92%	low
December Weather	6°C (43°F)	105 mm (4.1 inches)	93%	low