September Weather in Paris, United States

Last updated: June 24, 2025

In Paris, United States, the average temperature in September is a pleasant 22°C (72°F). However, temperatures can vary significantly, with a minimum of 7°C (44°F) and a maximum reaching up to 35°C (96°F). During this month, expect about 61 mm (2.4 in) of precipitation over 6 days, contributing to an average humidity of 76%. Prepare for a mix of warmth and moisture!

September Temperature in Paris

In September in Paris, the average temperature is 22°C (72°F), with maximums reaching as high as 35°C (96°F) and minimums dropping to around 7°C (44°F). This range makes it an ideal time for travelers seeking pleasant weather and outdoor activities.

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

The chart illustrates September temperature patterns in Paris, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Paris, September typically has an average temperature of 22°C (72°F), with highs reaching up to 35°C (96°F) and lows dropping to around 7°C (44°F).

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

September Precipitation in Paris

In Paris in September, the total precipitation amount is 61 mm (2.4 in) spread over a period of 6 days.

September Precipitation Trends in Paris

The chart displays monthly precipitation patterns in Paris, 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 Paris, September typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 6 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 Paris

In Paris in September humidity is 76%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as you navigate through the thick, saturated air.

September Average Humidity in Paris

This chart illustrates the average monthly humidity levels in Paris, 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 Paris 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 Paris

In Paris in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Paris.

Maximum UV Index Levels in Paris for September

The chart shows the monthly maximum UV Index (UVI) for Paris 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 Paris typically reaches 9, which falls under the very high exposure category.

Data source: Paris 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 Paris Compares to Other Months

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

This table compares monthly weather conditions in Paris, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	64 mm (2.5 inches)	82%	moderate
February Weather	0°C (33°F)	58 mm (2.3 inches)	80%	moderate
March Weather	7°C (46°F)	116 mm (4.6 inches)	80%	high
April Weather	12°C (54°F)	106 mm (4.2 inches)	80%	very high
May Weather	19°C (66°F)	188 mm (7.4 inches)	82%	very high
June Weather	25°C (77°F)	118 mm (4.7 inches)	83%	extreme
July Weather	26°C (80°F)	87 mm (3.4 inches)	81%	extreme
August Weather	24°C (76°F)	105 mm (4.1 inches)	80%	very high
September Weather	22°C (72°F)	61 mm (2.4 inches)	76%	very high
October Weather	14°C (58°F)	108 mm (4.3 inches)	76%	high
November Weather	6°C (44°F)	55 mm (2.2 inches)	85%	moderate
December Weather	3°C (38°F)	39 mm (1.5 inches)	86%	moderate