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September Weather in Castelnau-de-Brassac, France

Last updated: August 23, 2025

In September, the average temperature in Castelnau-de-Brassac, France is a comfortable 17°C (62°F). However, be prepared for a temperature range that can drop to a cool 4°C (40°F) at night or rise to a warm 29°C (85°F) during the day. With 68 mm (2.7 in) of precipitation expected over 10 days, don't forget to pack an umbrella! The average humidity hovers around 73%, adding a touch of tropical to your experience.

September Temperature in Castelnau-de-Brassac

In September in Castelnau-de-Brassac, the average temperature is 17°C (62°F). Maximum temperatures can reach 29°C (85°F), while minimums can drop as low as 4°C (40°F). Pack for a variety of weather conditions to enjoy your trip!

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

The chart illustrates September temperature patterns in Castelnau-de-Brassac, 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-Brassac, September typically has an average temperature of 17°C (62°F), with highs reaching up to 29°C (85°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec384346505764686862544642
Data source: Temperature data for Castelnau-de-Brassac 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-Brassac

In Castelnau-de-Brassac in September, the precipitation amount is 68 mm (2.7 in) over a span of 10 days.

September Precipitation Trends in Castelnau-de-Brassac

The chart displays monthly precipitation patterns in Castelnau-de-Brassac, 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-Brassac, September typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec114821008512699784668101100138
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Castelnau-de-Brassac

In Castelnau-de-Brassac in September, humidity is 73%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket enveloping you, making it quite uncomfortable for traveling as it can leave you feeling sticky and exhausted quickly.

September Average Humidity in Castelnau-de-Brassac

This chart illustrates the average monthly humidity levels in Castelnau-de-Brassac, 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-Brassac is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%83%80%77%75%74%72%70%73%82%87%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Castelnau-de-Brassac

In Castelnau-de-Brassac 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-Brassac.

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

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

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

This table compares monthly weather conditions in Castelnau-de-Brassac, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (39°F)114 mm (4.5 inches)87%low
February Weather6°C (44°F)82 mm (3.2 inches)83%moderate
March Weather8°C (46°F)100 mm (3.9 inches)80%high
April Weather10°C (51°F)85 mm (3.3 inches)77%high
May Weather14°C (57°F)126 mm (5.0 inches)75%very high
June Weather18°C (65°F)99 mm (3.9 inches)74%very high
July Weather20°C (69°F)78 mm (3.1 inches)72%very high
August Weather20°C (69°F)46 mm (1.8 inches)70%very high
September Weather17°C (62°F)68 mm (2.7 inches)73%high
October Weather12°C (54°F)101 mm (4.0 inches)82%moderate
November Weather8°C (46°F)100 mm (3.9 inches)87%moderate
December Weather5°C (42°F)138 mm (5.4 inches)88%low

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