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September Weather in Long, France

Last updated: August 23, 2025

In September, the average temperature in Long, France is a comfortable 16°C (60°F). Expect a minimum dip to 4°C (39°F) and a pleasant maximum of 29°C (85°F). During this period, precipitation totals around 48 mm (1.9 in) spread over 10 days, contributing to an average humidity of 76%.

September Temperature in Long

In September in Long, the average temperature is 16°C (60°F). The maximum can reach 29°C (85°F), and the minimum can be as low as 4°C (39°F). This makes it an ideal time to explore outdoor activities while enjoying mild weather.

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

The chart illustrates September temperature patterns in Long, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Long, September typically has an average temperature of 16°C (60°F), with highs reaching up to 29°C (85°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec404346505663666560544643
Data source: Temperature data for Long 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 Long

In Long in September, the precipitation amount is 48 mm (1.9 in) spread over a period of 10 days.

September Precipitation Trends in Long

The chart displays monthly precipitation patterns in Long, 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 Long, September typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec6565713475675071488670110
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Long

In Long in September humidity is 76%. With an average temperature of 16°C (60°F), this humidity feels like a warm embrace, making it somewhat uncomfortable for traveling, as the air can feel heavy and oppressive, potentially leading to fatigue and a constant need for hydration.

September Average Humidity in Long

This chart illustrates the average monthly humidity levels in Long, 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 Long is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%82%80%73%68%76%88%92%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Long

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

Maximum UV Index Levels in Long for September

The chart shows the monthly maximum UV Index (UVI) for Long 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 Long typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234679886421
Data source: Long 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 Long Compares to Other Months

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

This table compares monthly weather conditions in Long, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)65 mm (2.5 inches)91%low
February Weather6°C (43°F)65 mm (2.6 inches)89%moderate
March Weather8°C (46°F)71 mm (2.8 inches)85%moderate
April Weather10°C (51°F)34 mm (1.4 inches)84%high
May Weather13°C (56°F)75 mm (3.0 inches)82%high
June Weather17°C (63°F)67 mm (2.6 inches)80%very high
July Weather19°C (66°F)49 mm (1.9 inches)73%very high
August Weather18°C (65°F)71 mm (2.8 inches)68%very high
September Weather16°C (60°F)48 mm (1.9 inches)76%high
October Weather12°C (55°F)86 mm (3.4 inches)88%moderate
November Weather8°C (46°F)70 mm (2.8 inches)92%low
December Weather6°C (43°F)110 mm (4.3 inches)93%low

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