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September Weather in Saint-Glen, France

Last updated: August 23, 2025

In September, the average temperature in Saint-Glen, France is a cozy 16°C (60°F), with temperatures ranging from a chilly 5°C (40°F) to a warm 30°C (87°F). Expect 45 mm (1.8 in) of precipitation spread over 9 days, contributing to an average humidity of 76%. Perfect for those who love a touch of warmth and occasional showers!

September Temperature in Saint-Glen

In September in Saint-Glen, the average temperature is 16°C (60°F). Maximums can reach 30°C (87°F) and minimums can be as low as 5°C (40°F). This mild climate makes it an ideal time for outdoor activities and exploration.

September Weather in Saint-Glen: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saint-Glen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Glen, September typically has an average temperature of 16°C (60°F), with highs reaching up to 30°C (87°F) and lows dropping to around 5°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec434447515662656460554745
Data source: Temperature data for Saint-Glen generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Saint-Glen

In Saint-Glen in September, the precipitation amount is 45 mm (1.8 in) spread over 9 days.

September Precipitation Trends in Saint-Glen

The chart displays monthly precipitation patterns in Saint-Glen, 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 Saint-Glen, September typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec4360574664103485145896690
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint-Glen

In Saint-Glen in September humidity is 76%. With an average temperature of 16°C (60°F), this humidity feels like a warm embrace, making it somewhat uncomfortable for traveling, as the air can feel heavy and oppressive, potentially leading to fatigue and a constant need for hydration.

September Average Humidity in Saint-Glen

This chart illustrates the average monthly humidity levels in Saint-Glen, 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 Saint-Glen is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%85%84%81%77%63%71%76%89%90%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Saint-Glen

In Saint-Glen 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 Saint-Glen, you can refer to this Hourly UV Index in Saint-Glen.

Maximum UV Index Levels in Saint-Glen for September

The chart shows the monthly maximum UV Index (UVI) for Saint-Glen 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 Saint-Glen typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986422
Data source: Saint-Glen 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 Saint-Glen Compares to Other Months

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

This table compares monthly weather conditions in Saint-Glen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)42 mm (1.7 inches)89%low
February Weather7°C (45°F)60 mm (2.4 inches)88%moderate
March Weather8°C (47°F)57 mm (2.3 inches)85%moderate
April Weather10°C (51°F)45 mm (1.8 inches)84%high
May Weather13°C (56°F)64 mm (2.5 inches)81%very high
June Weather17°C (62°F)103 mm (4.0 inches)77%very high
July Weather18°C (65°F)48 mm (1.9 inches)63%very high
August Weather18°C (64°F)51 mm (2.0 inches)71%very high
September Weather16°C (60°F)45 mm (1.8 inches)76%high
October Weather13°C (55°F)89 mm (3.5 inches)89%moderate
November Weather8°C (48°F)66 mm (2.6 inches)90%low
December Weather7°C (45°F)90 mm (3.5 inches)90%low

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