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September Weather in Mervans, France

Last updated: August 23, 2025

In September, the average temperature in Mervans, France hovers around 18°C (65°F). Expect a minimum chill of 5°C (42°F) and a sweltering maximum of 34°C (93°F). With 57 mm (2.2 in) of precipitation over 8 days, there's a good chance of encountering some rain. Also, be prepared for a humid atmosphere with an average humidity of 81%.

September Temperature in Mervans

In September in Mervans, the average temperature is 18°C (65°F). The maximum can reach 34°C (93°F) and the minimum can be as low as 5°C (42°F). This makes it a great time to visit, offering warm days for outdoor adventures and cooler evenings for cozy gatherings.

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

The chart illustrates September temperature patterns in Mervans, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mervans, September typically has an average temperature of 18°C (65°F), with highs reaching up to 34°C (93°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec384448546069737265564642
Data source: Temperature data for Mervans 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 Mervans

In Mervans in September, the precipitation amount is 57 mm (2.2 in) over the course of 8 days.

September Precipitation Trends in Mervans

The chart displays monthly precipitation patterns in Mervans, 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 Mervans, September typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec94789854113726356579795157
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mervans

In Mervans in September, humidity is 81%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and the air thick and sultry—a challenging environment for traveling.

September Average Humidity in Mervans

This chart illustrates the average monthly humidity levels in Mervans, 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 Mervans is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%84%80%82%82%77%81%89%89%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mervans

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

Maximum UV Index Levels in Mervans for September

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

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

This table compares monthly weather conditions in Mervans, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)94 mm (3.7 inches)91%low
February Weather6°C (44°F)78 mm (3.1 inches)89%moderate
March Weather9°C (48°F)98 mm (3.9 inches)87%moderate
April Weather12°C (54°F)54 mm (2.1 inches)84%high
May Weather16°C (61°F)113 mm (4.4 inches)80%very high
June Weather21°C (69°F)72 mm (2.8 inches)82%very high
July Weather23°C (73°F)63 mm (2.5 inches)82%very high
August Weather22°C (72°F)56 mm (2.2 inches)77%very high
September Weather18°C (65°F)57 mm (2.2 inches)81%high
October Weather13°C (56°F)97 mm (3.8 inches)89%moderate
November Weather8°C (46°F)95 mm (3.7 inches)89%low
December Weather6°C (42°F)157 mm (6.2 inches)91%low

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