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September Weather in Merigny, France

Last updated: August 23, 2025

In September, the average temperature in Merigny, France hovers around 18°C (65°F). You can expect a range with a minimum of 5°C (41°F) and a maximum reaching up to 36°C (97°F). With an average humidity of 76%, the region experiences about 40 mm (1.6 in) of precipitation spread over 6 days.

September Temperature in Merigny

In September in Merigny, the average temperature is 18°C (65°F). Maximums can reach 36°C (97°F), and minimums can drop as low as 5°C (41°F). It's advisable to pack for both warm and cooler conditions while exploring this destination.

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

The chart illustrates September temperature patterns in Merigny, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merigny, September typically has an average temperature of 18°C (65°F), with highs reaching up to 36°C (97°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec414548546067717064564744
Data source: Temperature data for Merigny 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 Merigny

In Merigny in September, the precipitation amount is 40 mm (1.6 in) over the course of 6 days.

September Precipitation Trends in Merigny

The chart displays monthly precipitation patterns in Merigny, 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 Merigny, September typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec6064724981753629407570102
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Merigny

In Merigny in September, humidity is 76%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making travel a little sticky but enjoyable, as long as you stay hydrated and take breaks in the shade.

September Average Humidity in Merigny

This chart illustrates the average monthly humidity levels in Merigny, 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 Merigny 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 Merigny

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

Maximum UV Index Levels in Merigny for September

The chart shows the monthly maximum UV Index (UVI) for Merigny 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 Merigny typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986422
Data source: Merigny 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 Merigny Compares to Other Months

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

This table compares monthly weather conditions in Merigny, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)60 mm (2.4 inches)90%low
February Weather7°C (45°F)64 mm (2.5 inches)88%moderate
March Weather9°C (49°F)71 mm (2.8 inches)85%moderate
April Weather12°C (54°F)49 mm (1.9 inches)83%high
May Weather15°C (60°F)81 mm (3.2 inches)83%very high
June Weather20°C (68°F)75 mm (2.9 inches)79%very high
July Weather22°C (71°F)36 mm (1.4 inches)71%very high
August Weather21°C (70°F)29 mm (1.1 inches)68%very high
September Weather18°C (65°F)40 mm (1.6 inches)76%high
October Weather14°C (57°F)75 mm (2.9 inches)87%moderate
November Weather8°C (47°F)70 mm (2.7 inches)91%low
December Weather7°C (45°F)102 mm (4.0 inches)93%low

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