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September Weather in Lanvallay, France

Last updated: August 23, 2025

In Lanvallay, France, the average temperature in September hovers around 16°C (62°F), with a comfortable range from a cool 5°C (41°F) to a warm 31°C (88°F). Expect around 61 mm (2.4 in) of precipitation over approximately 10 days, contributing to an average humidity of 79%. Prepare accordingly for a mix of mild weather and occasional showers!

September Temperature in Lanvallay

In September in Lanvallay, the average temperature is 16°C (62°F). Maximums can reach 31°C (88°F), and minimums can be as low as 5°C (41°F). This variety in temperature makes it advisable to pack layers for your trip.

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

The chart illustrates September temperature patterns in Lanvallay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lanvallay, September typically has an average temperature of 16°C (62°F), with highs reaching up to 31°C (88°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec444548525662656461564846
Data source: Temperature data for Lanvallay 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 Lanvallay

In Lanvallay in September, the precipitation amount is 61 mm (2.4 in) over a span of 10 days.

September Precipitation Trends in Lanvallay

The chart displays monthly precipitation patterns in Lanvallay, 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 Lanvallay, September typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec5467624971925562619976107
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lanvallay

In Lanvallay in September, humidity is 79%. With an average temperature of 16°C (62°F), this humidity feels like a warm, enveloping blanket that makes walking outdoors feel languid and heavy, demanding frequent breaks and plenty of water as you navigate the bustling streets.

September Average Humidity in Lanvallay

This chart illustrates the average monthly humidity levels in Lanvallay, 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 Lanvallay is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%86%85%80%80%69%73%79%89%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lanvallay

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

Maximum UV Index Levels in Lanvallay for September

The chart shows the monthly maximum UV Index (UVI) for Lanvallay 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 Lanvallay typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Lanvallay 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 Lanvallay Compares to Other Months

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

This table compares monthly weather conditions in Lanvallay, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)54 mm (2.1 inches)90%low
February Weather7°C (46°F)67 mm (2.6 inches)89%moderate
March Weather9°C (48°F)62 mm (2.4 inches)86%moderate
April Weather11°C (52°F)49 mm (1.9 inches)84%high
May Weather14°C (57°F)71 mm (2.8 inches)80%very high
June Weather17°C (63°F)92 mm (3.6 inches)80%very high
July Weather19°C (66°F)55 mm (2.2 inches)69%very high
August Weather18°C (65°F)61 mm (2.4 inches)73%very high
September Weather16°C (62°F)61 mm (2.4 inches)79%high
October Weather13°C (56°F)99 mm (3.9 inches)89%moderate
November Weather9°C (49°F)76 mm (3.0 inches)92%low
December Weather8°C (47°F)107 mm (4.2 inches)92%low

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