nomadseason

September Weather in Firminy, France

Last updated: August 23, 2025

In September, the average temperature in Firminy, France is a comfortable 16°C (61°F). Temperatures can range from a chilly 3°C (38°F) to a warm 32°C (89°F). Expect about 51 mm (2.0 in) of precipitation over approximately 8 days, contributing to an average humidity level of 72%. Enjoy the unique climate that Firminy offers this September!

September Temperature in Firminy

In September in Firminy, the average temperature is 16°C (61°F). Maximums can reach 32°C (89°F), while minimums can dip as low as 3°C (38°F). This variation makes it essential for travelers to pack layers to accommodate both warm days and cooler nights.

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

The chart illustrates September temperature patterns in Firminy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Firminy, September typically has an average temperature of 16°C (61°F), with highs reaching up to 32°C (89°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec364145505765696861524339
Data source: Temperature data for Firminy generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Firminy

In Firminy in September, the total precipitation amount is 51 mm (2.0 in), spread over a duration of 8 days.

September Precipitation Trends in Firminy

The chart displays monthly precipitation patterns in Firminy, 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 Firminy, September typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec5844565710076725251787987
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Firminy

In Firminy in September humidity is 72%. With an average temperature of 16°C (61°F), this humidity feels like a damp blanket wrapping around you, making every step feel heavier and requiring extra effort while traveling.

September Average Humidity in Firminy

This chart illustrates the average monthly humidity levels in Firminy, 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 Firminy is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%88%84%81%77%76%68%61%72%88%91%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Firminy

In Firminy in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Firminy.

Maximum UV Index Levels in Firminy for September

The chart shows the monthly maximum UV Index (UVI) for Firminy 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 Firminy typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2367810997532
Data source: Firminy 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 Firminy Compares to Other Months

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

This table compares monthly weather conditions in Firminy, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)58 mm (2.3 inches)91%low
February Weather5°C (41°F)44 mm (1.7 inches)88%moderate
March Weather7°C (45°F)56 mm (2.2 inches)84%high
April Weather10°C (50°F)57 mm (2.2 inches)81%high
May Weather14°C (57°F)100 mm (4.0 inches)77%very high
June Weather18°C (65°F)76 mm (3.0 inches)76%very high
July Weather21°C (69°F)72 mm (2.9 inches)68%very high
August Weather20°C (69°F)52 mm (2.0 inches)61%very high
September Weather16°C (61°F)51 mm (2.0 inches)72%high
October Weather11°C (53°F)78 mm (3.1 inches)88%moderate
November Weather6°C (43°F)79 mm (3.1 inches)91%moderate
December Weather4°C (40°F)87 mm (3.4 inches)92%low

Compare Firminy's Climate with Cities Worldwide