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September Weather in Alligny-Cosne, France

Last updated: August 23, 2025

In September, the average temperature in Alligny-Cosne, France hovers around 17°C (63°F). However, temperatures can vary significantly, with a minimum of 3°C (38°F) and a sweltering maximum of 35°C (96°F). Visitors can expect an average precipitation of 62 mm (2.4 in) spread across about 7 days, and the humidity levels are typically around 78%, adding a touch of tropical feel to the atmosphere.

September Temperature in Alligny-Cosne

In September in Alligny-Cosne, the average temperature is 17°C (63°F). Maximums can reach 35°C (96°F), while minimums can drop to as low as 3°C (38°F). Be sure to pack layers to enjoy the varying temperatures throughout your travels.

September Weather in Alligny-Cosne: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Alligny-Cosne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alligny-Cosne, September typically has an average temperature of 17°C (63°F), with highs reaching up to 35°C (96°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec394347525867706963554542
Data source: Temperature data for Alligny-Cosne 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 Alligny-Cosne

In Alligny-Cosne in September, the total precipitation amount is 62 mm (2.4 in) observed over a span of 7 days.

September Precipitation Trends in Alligny-Cosne

The chart displays monthly precipitation patterns in Alligny-Cosne, 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 Alligny-Cosne, September typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec7665774284704951628072114
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Alligny-Cosne

In Alligny-Cosne in September, humidity is 78%. With an average temperature of 17°C (63°F), this humidity feels like a warm, enveloping blanket, making traveling slightly uncomfortable as you navigate the sticky air, prompting the need for frequent breaks in cooler, shaded areas.

September Average Humidity in Alligny-Cosne

This chart illustrates the average monthly humidity levels in Alligny-Cosne, 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 Alligny-Cosne is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%84%82%82%79%72%78%88%91%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Alligny-Cosne

In Alligny-Cosne 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 Alligny-Cosne, you can refer to this Hourly UV Index in Alligny-Cosne.

Maximum UV Index Levels in Alligny-Cosne for September

The chart shows the monthly maximum UV Index (UVI) for Alligny-Cosne 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 Alligny-Cosne typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Alligny-Cosne 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 Alligny-Cosne Compares to Other Months

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

This table compares monthly weather conditions in Alligny-Cosne, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)76 mm (3.0 inches)91%low
February Weather6°C (43°F)65 mm (2.6 inches)89%moderate
March Weather8°C (47°F)77 mm (3.0 inches)86%moderate
April Weather11°C (53°F)42 mm (1.6 inches)84%high
May Weather15°C (58°F)83 mm (3.3 inches)82%very high
June Weather19°C (67°F)70 mm (2.8 inches)82%very high
July Weather21°C (70°F)49 mm (1.9 inches)79%very high
August Weather21°C (69°F)51 mm (2.0 inches)72%very high
September Weather17°C (63°F)62 mm (2.4 inches)78%high
October Weather13°C (55°F)80 mm (3.1 inches)88%moderate
November Weather7°C (46°F)72 mm (2.8 inches)91%low
December Weather6°C (43°F)114 mm (4.5 inches)93%low

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