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September Weather in Saint-Laurent-en-Grandvaux, France

Last updated: August 23, 2025

In September, the average temperature in Saint-Laurent-en-Grandvaux, France hovers around 14°C (57°F), offering a pleasant climate for visitors. Expect a range with minimums dipping to 3°C (37°F) and maximums peaking at 27°C (80°F). It's also the time to prepare for 109 mm (4.3 in) of precipitation spread over 12 days, contributing to an average humidity of 81%.

September Temperature in Saint-Laurent-en-Grandvaux

In September in Saint-Laurent-en-Grandvaux, the average temperature is 14°C (57°F). Maximums can reach 27°C (80°F), and minimums can drop as low as 3°C (37°F). This means that travelers should pack for a mix of pleasant warmth and cooler evenings.

September Weather in Saint-Laurent-en-Grandvaux: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saint-Laurent-en-Grandvaux, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Laurent-en-Grandvaux, September typically has an average temperature of 14°C (57°F), with highs reaching up to 27°C (80°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec323741485362646457494035
Data source: Temperature data for Saint-Laurent-en-Grandvaux 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-Laurent-en-Grandvaux

In Saint-Laurent-en-Grandvaux in September, the total precipitation amount is 109 mm (4.3 in) during a span of 12 days.

September Precipitation Trends in Saint-Laurent-en-Grandvaux

The chart displays monthly precipitation patterns in Saint-Laurent-en-Grandvaux, 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-Laurent-en-Grandvaux, September typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec17012418286200182140158109140140276
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint-Laurent-en-Grandvaux

In Saint-Laurent-en-Grandvaux in September, humidity is 81%. With an average temperature of 14°C (57°F), this humidity feels like a warm, dense blanket that clings to your skin, making outdoor exploration a bit heavier and more tiring.

September Average Humidity in Saint-Laurent-en-Grandvaux

This chart illustrates the average monthly humidity levels in Saint-Laurent-en-Grandvaux, 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-Laurent-en-Grandvaux is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%84%80%82%82%77%81%89%89%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Saint-Laurent-en-Grandvaux

In Saint-Laurent-en-Grandvaux 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-Laurent-en-Grandvaux, you can refer to this Hourly UV Index in Saint-Laurent-en-Grandvaux.

Maximum UV Index Levels in Saint-Laurent-en-Grandvaux for September

The chart shows the monthly maximum UV Index (UVI) for Saint-Laurent-en-Grandvaux 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-Laurent-en-Grandvaux typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2367810986532
Data source: Saint-Laurent-en-Grandvaux 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-Laurent-en-Grandvaux Compares to Other Months

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

This table compares monthly weather conditions in Saint-Laurent-en-Grandvaux, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)170 mm (6.7 inches)91%low
February Weather3°C (37°F)124 mm (4.9 inches)89%moderate
March Weather5°C (41°F)182 mm (7.2 inches)87%high
April Weather9°C (48°F)86 mm (3.4 inches)84%high
May Weather12°C (54°F)200 mm (7.9 inches)80%very high
June Weather17°C (62°F)182 mm (7.2 inches)82%very high
July Weather18°C (65°F)140 mm (5.5 inches)82%very high
August Weather18°C (64°F)158 mm (6.2 inches)77%very high
September Weather14°C (57°F)109 mm (4.3 inches)81%high
October Weather10°C (49°F)140 mm (5.5 inches)89%moderate
November Weather4°C (40°F)140 mm (5.5 inches)89%moderate
December Weather2°C (35°F)276 mm (10.9 inches)91%low

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