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September Weather in Coulaines, France

Last updated: August 23, 2025

In Coulaines, France, the average temperature in September hovers around 17°C (63°F), making for a comfortable climate. However, be prepared for the range—minimums may dip to 5°C (41°F), while maximums can soar to 35°C (94°F). During this month, expect about 45 mm (1.8 in) of precipitation spread over 8 days, and enjoy an average humidity level of 76% for that authentic seasonal feel.

September Temperature in Coulaines

In September in Coulaines, the average temperature is 17°C (63°F). Maximum temperatures can reach 35°C (94°F), while minimum temperatures can drop as low as 5°C (41°F). This makes it an ideal time for travelers to experience a range of weather conditions, so be sure to pack accordingly.

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

The chart illustrates September temperature patterns in Coulaines, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Coulaines, September typically has an average temperature of 17°C (63°F), with highs reaching up to 35°C (94°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec414448525865696862554644
Data source: Temperature data for Coulaines 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 Coulaines

In Coulaines in September, the precipitation amount is 45 mm (1.8 in) over the course of 8 days.

September Precipitation Trends in Coulaines

The chart displays monthly precipitation patterns in Coulaines, 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 Coulaines, September typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec526470407380364345857598
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Coulaines

In Coulaines in September humidity is 76%. With an average temperature of 17°C (63°F), this humidity feels like traveling through a warm, enveloping blanket, making every outdoor adventure feel sticky and heavy, yet pleasantly refreshing when you find a cool breeze.

September Average Humidity in Coulaines

This chart illustrates the average monthly humidity levels in Coulaines, 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 Coulaines is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%85%84%83%79%71%68%76%87%91%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Coulaines

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

Maximum UV Index Levels in Coulaines for September

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

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

This table compares monthly weather conditions in Coulaines, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)52 mm (2.0 inches)90%low
February Weather7°C (44°F)64 mm (2.5 inches)88%moderate
March Weather9°C (48°F)70 mm (2.8 inches)85%moderate
April Weather11°C (53°F)40 mm (1.6 inches)83%high
May Weather14°C (58°F)73 mm (2.9 inches)83%very high
June Weather19°C (66°F)80 mm (3.1 inches)79%very high
July Weather20°C (69°F)35 mm (1.4 inches)71%very high
August Weather20°C (68°F)43 mm (1.7 inches)68%very high
September Weather17°C (63°F)45 mm (1.8 inches)76%high
October Weather13°C (55°F)84 mm (3.3 inches)87%moderate
November Weather8°C (47°F)75 mm (2.9 inches)91%low
December Weather7°C (44°F)98 mm (3.9 inches)93%low

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