September Weather in Lacs, France

Last updated: August 23, 2025

In Lacs, France, the average temperature in September is a comfortable 17°C (63°F). However, be prepared for a range, with minimums dropping to 3°C (38°F) and maximums soaring to 34°C (94°F). During this month, you'll also encounter about 61 mm (2.4 in) of precipitation over 8 days, alongside an average humidity of 76%.

September Temperature in Lacs

In September in Lacs, the average temperature is 17°C (63°F). Maximums can reach 34°C (94°F), while minimums can drop as low as 3°C (38°F). Be prepared for a range of temperatures, and pack accordingly for your travels!

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

The chart illustrates September temperature patterns in Lacs, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lacs, September typically has an average temperature of 17°C (63°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Lacs

In Lacs in September, the precipitation amount is 61 mm (2.4 in) distributed over 8 days.

September Precipitation Trends in Lacs

The chart displays monthly precipitation patterns in Lacs, 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 Lacs, September typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 8 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 Lacs

In Lacs 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 Lacs

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

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

Maximum UV Index Levels in Lacs for September

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

Data source: Lacs 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 Lacs Compares to Other Months

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

This table compares monthly weather conditions in Lacs, 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)	71 mm (2.8 inches)	90%	low
February Weather	7°C (44°F)	68 mm (2.7 inches)	88%	moderate
March Weather	8°C (47°F)	77 mm (3.0 inches)	85%	moderate
April Weather	11°C (52°F)	58 mm (2.3 inches)	83%	high
May Weather	14°C (58°F)	96 mm (3.8 inches)	83%	very high
June Weather	19°C (66°F)	87 mm (3.4 inches)	79%	very high
July Weather	21°C (70°F)	57 mm (2.3 inches)	71%	very high
August Weather	20°C (69°F)	53 mm (2.1 inches)	68%	very high
September Weather	17°C (63°F)	61 mm (2.4 inches)	76%	high
October Weather	13°C (55°F)	75 mm (3.0 inches)	87%	moderate
November Weather	8°C (46°F)	75 mm (3.0 inches)	91%	moderate
December Weather	6°C (43°F)	117 mm (4.6 inches)	93%	low