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September Weather in Saint-Pere-en-Retz, France

Last updated: August 23, 2025

In Saint-Pere-en-Retz, France, the average temperature in September is a pleasant 17°C (63°F). Expect a range of temperatures where the minimum can drop to 6°C (44°F) and the maximum can soar up to 33°C (92°F). You'll also want to prepare for some rain, as the area experiences 40 mm (1.6 in) of precipitation over 8 days. With an average humidity level of around 75%, be ready for a truly refreshing atmosphere!

September Temperature in Saint-Pere-en-Retz

In September in Saint-Pere-en-Retz, the average temperature is 17°C (63°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 6°C (44°F). This makes it a great time to explore Saint-Pere-en-Retz, as the weather is pleasantly mild with some warm days for outdoor activities.

September Weather in Saint-Pere-en-Retz: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saint-Pere-en-Retz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Pere-en-Retz, September typically has an average temperature of 17°C (63°F), with highs reaching up to 33°C (92°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec444649535965686763574947
Data source: Temperature data for Saint-Pere-en-Retz 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 Saint-Pere-en-Retz

In Saint-Pere-en-Retz in September, the precipitation amount is 40 mm (1.6 in), occurring over a span of 8 days.

September Precipitation Trends in Saint-Pere-en-Retz

The chart displays monthly precipitation patterns in Saint-Pere-en-Retz, 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 Saint-Pere-en-Retz, September typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec4864664564804145408178106
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint-Pere-en-Retz

In Saint-Pere-en-Retz in September, humidity is 75%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities a bit sticky and requiring frequent breaks to stay refreshed during your travels.

September Average Humidity in Saint-Pere-en-Retz

This chart illustrates the average monthly humidity levels in Saint-Pere-en-Retz, 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 Saint-Pere-en-Retz is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%84%83%81%75%65%67%75%85%88%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Saint-Pere-en-Retz

In Saint-Pere-en-Retz 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 Saint-Pere-en-Retz, you can refer to this Hourly UV Index in Saint-Pere-en-Retz.

Maximum UV Index Levels in Saint-Pere-en-Retz for September

The chart shows the monthly maximum UV Index (UVI) for Saint-Pere-en-Retz 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 Saint-Pere-en-Retz typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986522
Data source: Saint-Pere-en-Retz 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 Saint-Pere-en-Retz Compares to Other Months

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

This table compares monthly weather conditions in Saint-Pere-en-Retz, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)48 mm (1.9 inches)88%low
February Weather8°C (46°F)64 mm (2.5 inches)87%moderate
March Weather9°C (49°F)66 mm (2.6 inches)84%moderate
April Weather12°C (54°F)45 mm (1.8 inches)83%high
May Weather15°C (59°F)64 mm (2.5 inches)81%very high
June Weather18°C (65°F)80 mm (3.1 inches)75%very high
July Weather20°C (68°F)41 mm (1.6 inches)65%very high
August Weather19°C (67°F)45 mm (1.8 inches)67%very high
September Weather17°C (63°F)40 mm (1.6 inches)75%high
October Weather14°C (57°F)80 mm (3.2 inches)85%moderate
November Weather9°C (49°F)78 mm (3.1 inches)88%low
December Weather8°C (47°F)106 mm (4.2 inches)90%low

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