nomadseason

September Weather in Saint-Laurent, France

Last updated: August 23, 2025

The average temperature in Saint-Laurent, France during September is a mild 16°C (62°F). While temperatures can dip to a cool 3°C (38°F), they can also soar to a warm 33°C (92°F). Expect about 61 mm (2.4 in) of precipitation over 8 days, and keep in mind the average humidity sits at a comfortable 76%.

September Temperature in Saint-Laurent

In September in Saint-Laurent, the average temperature is 16°C (62°F). Maximums can reach 33°C (92°F) and minimums can be as low as 3°C (38°F). Travelers should be prepared for a wide range of temperatures, ensuring to pack layers for both warm and cool weather.

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

The chart illustrates September temperature patterns in Saint-Laurent, 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, September typically has an average temperature of 16°C (62°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec394346515765686761544542
Data source: Temperature data for Saint-Laurent generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Saint-Laurent

In Saint-Laurent in September, the precipitation amount is 61 mm (2.4 in) distributed over 8 days.

September Precipitation Trends in Saint-Laurent

The chart displays monthly precipitation patterns in Saint-Laurent, 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, September typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec73707660100865554617376120
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Saint-Laurent

In Saint-Laurent in September, humidity is 76%. With an average temperature of 16°C (62°F), this humidity feels like a warm, enveloping blanket that makes exploring the outdoors feel both refreshing and slightly muggy, urging travelers to take breaks often and enjoy the shade.

September Average Humidity in Saint-Laurent

This chart illustrates the average monthly humidity levels in Saint-Laurent, 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 is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%85%84%83%79%71%68%76%87%91%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Saint-Laurent

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

Maximum UV Index Levels in Saint-Laurent for September

The chart shows the monthly maximum UV Index (UVI) for Saint-Laurent 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 typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2357891096432
Data source: Saint-Laurent 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 Compares to Other Months

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

This table compares monthly weather conditions in Saint-Laurent, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)73 mm (2.9 inches)90%low
February Weather6°C (43°F)70 mm (2.8 inches)88%moderate
March Weather8°C (46°F)76 mm (3.0 inches)85%moderate
April Weather11°C (51°F)60 mm (2.4 inches)83%high
May Weather14°C (57°F)100 mm (3.9 inches)83%very high
June Weather18°C (65°F)86 mm (3.4 inches)79%very high
July Weather20°C (69°F)55 mm (2.1 inches)71%very high
August Weather20°C (68°F)54 mm (2.1 inches)68%very high
September Weather16°C (62°F)61 mm (2.4 inches)76%high
October Weather12°C (54°F)73 mm (2.9 inches)87%moderate
November Weather7°C (45°F)76 mm (3.0 inches)91%moderate
December Weather5°C (42°F)120 mm (4.7 inches)93%low

Compare Saint-Laurent's Climate with Cities Worldwide