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September Weather in Saint-Leonard, France

Last updated: August 23, 2025

In Saint-Leonard, France, the average temperature for September hovers around 16°C (60°F). Expect a range between a chilly 4°C (39°F) and a warm 28°C (83°F). Rainfall is typical, with 59 mm (2.3 in) spread over 9 days, contributing to an average humidity of 80%.

September Temperature in Saint-Leonard

In September in Saint-Leonard, the average temperature is 16°C (60°F). Maximums can reach 28°C (83°F), and minimums can be as low as 4°C (39°F). This makes Saint-Leonard a great destination for travelers seeking comfortable weather and a variety of outdoor activities.

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

The chart illustrates September temperature patterns in Saint-Leonard, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Leonard, September typically has an average temperature of 16°C (60°F), with highs reaching up to 28°C (83°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec414346505561656460554744
Data source: Temperature data for Saint-Leonard 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-Leonard

In Saint-Leonard in September, the precipitation amount is 59 mm (2.3 in) over the course of 9 days.

September Precipitation Trends in Saint-Leonard

The chart displays monthly precipitation patterns in Saint-Leonard, 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-Leonard, September typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec6864683365714873599678112
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint-Leonard

In Saint-Leonard in September, humidity is 80%. With an average temperature of 16°C (60°F), this humidity feels like walking through a warm, thick haze, making travel feel somewhat stifling and requiring frequent breaks to hydrate and cool down.

September Average Humidity in Saint-Leonard

This chart illustrates the average monthly humidity levels in Saint-Leonard, 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-Leonard is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%82%81%76%73%80%89%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Saint-Leonard

In Saint-Leonard in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Saint-Leonard.

Maximum UV Index Levels in Saint-Leonard for September

The chart shows the monthly maximum UV Index (UVI) for Saint-Leonard 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-Leonard typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224578875421
Data source: Saint-Leonard 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-Leonard Compares to Other Months

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

This table compares monthly weather conditions in Saint-Leonard, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)68 mm (2.7 inches)91%low
February Weather6°C (43°F)64 mm (2.5 inches)89%low
March Weather8°C (46°F)68 mm (2.7 inches)86%moderate
April Weather10°C (50°F)33 mm (1.3 inches)85%moderate
May Weather13°C (55°F)65 mm (2.6 inches)82%high
June Weather16°C (62°F)71 mm (2.8 inches)81%very high
July Weather18°C (65°F)48 mm (1.9 inches)76%very high
August Weather18°C (65°F)73 mm (2.9 inches)73%high
September Weather16°C (60°F)59 mm (2.3 inches)80%moderate
October Weather13°C (55°F)96 mm (3.8 inches)89%moderate
November Weather9°C (48°F)78 mm (3.1 inches)92%low
December Weather7°C (45°F)112 mm (4.4 inches)92%low

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