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September Weather in Le Guerno, France

Last updated: August 23, 2025

In Le Guerno, France, the average temperature in September hovers around 17°C (63°F), with a range that spans from a brisk 7°C (46°F) to a warm 31°C (87°F). Expect 39 mm (1.5 in) of rainfall spread over approximately 9 days, contributing to a pleasant average humidity of 79%. Whether you're planning outdoor activities or cozy indoor retreats, be prepared for the mild climate!

September Temperature in Le Guerno

In September in Le Guerno, the average temperature is 17°C (63°F). Maximums can reach 31°C (87°F) and minimums can drop as low as 7°C (46°F). This delightful range makes it a great time to enjoy both warm days and cooler evenings while exploring the area.

September Weather in Le Guerno: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Le Guerno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Le Guerno, September typically has an average temperature of 17°C (63°F), with highs reaching up to 31°C (87°F) and lows dropping to around 7°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec454649535864676663575047
Data source: Temperature data for Le Guerno 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 Le Guerno

In Le Guerno in September, the precipitation amount is 39 mm (1.5 in) spread over 9 days.

September Precipitation Trends in Le Guerno

The chart displays monthly precipitation patterns in Le Guerno, 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 Le Guerno, September typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec4969654563764751398776109
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Le Guerno

In Le Guerno in September, humidity is 79%. With an average temperature of 17°C (63°F), this humidity feels like a warm, muggy embrace, making outdoor activities less comfortable and prompting travelers to seek shaded areas or cool refreshments more frequently.

September Average Humidity in Le Guerno

This chart illustrates the average monthly humidity levels in Le Guerno, 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 Le Guerno is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%81%82%82%80%77%78%79%82%81%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Le Guerno

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

Maximum UV Index Levels in Le Guerno for September

The chart shows the monthly maximum UV Index (UVI) for Le Guerno 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 Le Guerno typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986522
Data source: Le Guerno 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 Le Guerno Compares to Other Months

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

This table compares monthly weather conditions in Le Guerno, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)49 mm (1.9 inches)82%low
February Weather8°C (47°F)69 mm (2.7 inches)83%moderate
March Weather9°C (49°F)65 mm (2.6 inches)81%moderate
April Weather12°C (53°F)45 mm (1.8 inches)82%high
May Weather14°C (58°F)63 mm (2.5 inches)82%very high
June Weather18°C (64°F)75 mm (3.0 inches)80%very high
July Weather19°C (67°F)47 mm (1.8 inches)77%very high
August Weather19°C (66°F)51 mm (2.0 inches)78%very high
September Weather17°C (63°F)39 mm (1.5 inches)79%high
October Weather14°C (57°F)87 mm (3.4 inches)82%moderate
November Weather10°C (50°F)76 mm (3.0 inches)81%low
December Weather9°C (48°F)109 mm (4.3 inches)82%low

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