September Weather in Paris, United States

Last updated: June 24, 2025

In September, the average temperature in Paris, United States is a comfortable 13°C (56°F). However, be prepared for a wide range, as temperatures can dip to a chilly -4°C (25°F) or soar to a warm 31°C (88°F). During this month, you can expect about 50 mm (2.0 in) of precipitation over 6 days, with an average humidity of 52%. Whether you're venturing out in the cool breeze or enjoying warmer days, be ready for a diverse climate!

September Temperature in Paris

In September in Paris, the average temperature is 13°C (56°F). The maximum can reach 31°C (88°F), and the minimum can be as low as -4°C (25°F). This diverse temperature range makes Paris an exciting destination for travelers seeking both warm and cool experiences.

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 13°C (56°F), with highs reaching up to 31°C (88°F) and lows dropping to around -4°C (25°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 precipitation amount is 50 mm (2.0 in) over the course 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 50 mm (2.0 inches) of precipitation spread over approximately 6 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Paris

In Paris in September, humidity is 52%. With an average temperature of 13°C (56°F), this humidity feels like a refreshing breeze that lightly cools the skin, making it comfortable for exploring the area while enjoying the pleasant weather.

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 52%, 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	-6°C (22°F)	73 mm (2.9 inches)	95%	moderate
February Weather	-5°C (23°F)	100 mm (3.9 inches)	95%	moderate
March Weather	0°C (32°F)	66 mm (2.6 inches)	90%	very high
April Weather	2°C (36°F)	83 mm (3.3 inches)	81%	very high
May Weather	7°C (46°F)	77 mm (3.0 inches)	71%	extreme
June Weather	15°C (59°F)	42 mm (1.6 inches)	64%	extreme
July Weather	20°C (68°F)	24 mm (1.0 inches)	59%	extreme
August Weather	19°C (66°F)	35 mm (1.4 inches)	49%	very high
September Weather	13°C (56°F)	50 mm (2.0 inches)	52%	very high
October Weather	4°C (40°F)	58 mm (2.3 inches)	69%	high
November Weather	-2°C (29°F)	66 mm (2.6 inches)	86%	moderate
December Weather	-6°C (22°F)	67 mm (2.6 inches)	91%	moderate