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September Weather in Treteau, France

Last updated: August 23, 2025

In September, the average temperature in Treteau, France hovers around 17°C (63°F), with a minimum dip to 4°C (39°F) and a maximum soaring to 35°C (95°F). Be prepared for some rain, as the area experiences an average precipitation of 63 mm (2.5 in) over 9 days. The air can feel quite humid, with an average humidity level of 78%.

September Temperature in Treteau

In September in Treteau, the average temperature is 17°C (63°F). Maximum temperatures can reach 35°C (95°F), while minimums can dip as low as 4°C (39°F). This varied climate makes Treteau an ideal destination for travelers looking to experience a mix of warm days and cooler nights.

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

The chart illustrates September temperature patterns in Treteau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Treteau, September typically has an average temperature of 17°C (63°F), with highs reaching up to 35°C (95°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec384347525967717063554542
Data source: Temperature data for Treteau 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 Treteau

In Treteau in September, the total precipitation amount is 63 mm (2.5 in) spread over a duration of 9 days.

September Precipitation Trends in Treteau

The chart displays monthly precipitation patterns in Treteau, 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 Treteau, September typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec6954714391756043636772113
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Treteau

In Treteau in September, humidity is 78%. With an average temperature of 17°C (63°F), this humidity feels like a warm, enveloping blanket, making traveling slightly uncomfortable as you navigate the sticky air, prompting the need for frequent breaks in cooler, shaded areas.

September Average Humidity in Treteau

This chart illustrates the average monthly humidity levels in Treteau, 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 Treteau is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%84%82%82%79%72%78%88%91%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Treteau

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

Maximum UV Index Levels in Treteau for September

The chart shows the monthly maximum UV Index (UVI) for Treteau 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 Treteau typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986432
Data source: Treteau 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 Treteau Compares to Other Months

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

This table compares monthly weather conditions in Treteau, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)69 mm (2.7 inches)91%low
February Weather6°C (43°F)53 mm (2.1 inches)89%moderate
March Weather8°C (47°F)71 mm (2.8 inches)86%moderate
April Weather11°C (52°F)43 mm (1.7 inches)84%high
May Weather15°C (59°F)91 mm (3.6 inches)82%very high
June Weather20°C (67°F)75 mm (3.0 inches)82%very high
July Weather21°C (71°F)60 mm (2.4 inches)79%very high
August Weather21°C (70°F)43 mm (1.7 inches)72%very high
September Weather17°C (63°F)63 mm (2.5 inches)78%high
October Weather13°C (55°F)67 mm (2.6 inches)88%moderate
November Weather7°C (46°F)72 mm (2.8 inches)91%moderate
December Weather6°C (42°F)113 mm (4.4 inches)93%low

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