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September Weather in Castelnau-de-Guers, France

Last updated: August 23, 2025

In September, the average temperature in Castelnau-de-Guers, France hovers around 20°C (69°F), with the thermometer dipping as low as 10°C (50°F) and soaring up to a warm 30°C (86°F). You can expect about 63 mm (2.5 in) of precipitation spread over 6 days, contributing to an average humidity level of 70%.

September Temperature in Castelnau-de-Guers

In September in Castelnau-de-Guers, the average temperature is 20°C (69°F), with maximums reaching 30°C (86°F) and minimums dropping as low as 10°C (50°F). This mild weather makes Castelnau-de-Guers an ideal destination for travelers looking to enjoy outdoor activities comfortably.

September Weather in Castelnau-de-Guers: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Castelnau-de-Guers, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castelnau-de-Guers, September typically has an average temperature of 20°C (69°F), with highs reaching up to 30°C (86°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec464952566370757568615348
Data source: Temperature data for Castelnau-de-Guers 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 Castelnau-de-Guers

In Castelnau-de-Guers in September, the precipitation amount is 63 mm (2.5 in) spread over a duration of 6 days.

September Precipitation Trends in Castelnau-de-Guers

The chart displays monthly precipitation patterns in Castelnau-de-Guers, 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 Castelnau-de-Guers, September typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec80637882714018266313712861
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Castelnau-de-Guers

In Castelnau-de-Guers in September humidity is 70%. With an average temperature of 20°C (69°F), this humidity feels like a warm blanket wrapped around you, making outdoor activities a bit challenging but also an opportunity to enjoy refreshing drinks and shaded spots while exploring the vibrant surroundings.

September Average Humidity in Castelnau-de-Guers

This chart illustrates the average monthly humidity levels in Castelnau-de-Guers, 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 Castelnau-de-Guers is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%77%73%73%71%67%66%63%70%80%84%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Castelnau-de-Guers

In Castelnau-de-Guers in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Castelnau-de-Guers.

Maximum UV Index Levels in Castelnau-de-Guers for September

The chart shows the monthly maximum UV Index (UVI) for Castelnau-de-Guers 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 Castelnau-de-Guers typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Castelnau-de-Guers 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 Castelnau-de-Guers Compares to Other Months

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

This table compares monthly weather conditions in Castelnau-de-Guers, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)80 mm (3.1 inches)82%low
February Weather10°C (49°F)63 mm (2.5 inches)77%moderate
March Weather11°C (52°F)78 mm (3.1 inches)73%high
April Weather13°C (56°F)82 mm (3.2 inches)73%high
May Weather17°C (63°F)71 mm (2.8 inches)71%very high
June Weather21°C (70°F)40 mm (1.6 inches)67%very high
July Weather24°C (75°F)18 mm (0.7 inches)66%very high
August Weather24°C (75°F)26 mm (1.0 inches)63%very high
September Weather20°C (69°F)63 mm (2.5 inches)70%high
October Weather16°C (61°F)137 mm (5.4 inches)80%moderate
November Weather12°C (53°F)128 mm (5.1 inches)84%moderate
December Weather9°C (48°F)61 mm (2.4 inches)83%low

Compare Castelnau-de-Guers's Climate with Cities Worldwide