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September Weather in Serris, France

Last updated: August 23, 2025

In Serris, France, the average temperature in September hovers around 17°C (63°F). Visitors can expect a range from a brisk 5°C (41°F) to a warm 34°C (93°F). During this month, precipitation averages 57 mm (2.2 in) over approximately 8 days, contributing to a generally high average humidity of 81%.

September Temperature in Serris

In September in Serris, the average temperature is 17°C (63°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop to as low as 5°C (41°F). It's a good time to pack layers and enjoy a mix of warm and cool weather for your travels.

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

The chart illustrates September temperature patterns in Serris, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Serris, September typically has an average temperature of 17°C (63°F), with highs reaching up to 34°C (93°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec404346525866696862554643
Data source: Temperature data for Serris 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 Serris

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

September Precipitation Trends in Serris

The chart displays monthly precipitation patterns in Serris, 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 Serris, September typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec6571753272635356578669116
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Serris

In Serris in September humidity is 81%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making travel slightly oppressive and calling for frequent breaks in air-conditioned spaces to recharge and enjoy your journey comfortably.

September Average Humidity in Serris

This chart illustrates the average monthly humidity levels in Serris, 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 Serris is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%84%83%83%80%76%81%88%92%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Serris

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

Maximum UV Index Levels in Serris for September

The chart shows the monthly maximum UV Index (UVI) for Serris 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 Serris typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689886421
Data source: Serris 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 Serris Compares to Other Months

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

This table compares monthly weather conditions in Serris, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)65 mm (2.6 inches)91%low
February Weather6°C (43°F)71 mm (2.8 inches)89%moderate
March Weather8°C (47°F)75 mm (3.0 inches)86%moderate
April Weather11°C (52°F)32 mm (1.2 inches)84%high
May Weather14°C (58°F)72 mm (2.8 inches)82%very high
June Weather19°C (66°F)63 mm (2.5 inches)82%very high
July Weather21°C (70°F)53 mm (2.1 inches)80%very high
August Weather20°C (68°F)56 mm (2.2 inches)76%very high
September Weather17°C (63°F)57 mm (2.2 inches)81%high
October Weather13°C (55°F)86 mm (3.4 inches)88%moderate
November Weather8°C (46°F)69 mm (2.7 inches)92%low
December Weather6°C (43°F)116 mm (4.6 inches)93%low

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