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September Weather in Saint-Laurent, France

Last updated: August 23, 2025

In September, the average temperature in Saint-Laurent, France hovers around 14°C (57°F). Daily temperatures can fluctuate, with a minimum of 0°C (33°F) and a maximum reaching up to 26°C (80°F). Expect 86 mm (3.4 in) of precipitation spread over 11 days, contributing to an average humidity level of 73%.

September Temperature in Saint-Laurent

In September in Saint-Laurent, the average temperature is 14°C (57°F). Maximums can reach 26°C (80°F), and minimums can drop as low as 0°C (33°F). This variation makes it essential for travelers to pack both light layers for the warmth and warmer clothing for the cooler evenings.

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 14°C (57°F), with highs reaching up to 26°C (80°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec303640475361646457483932
Data source: Temperature data for Saint-Laurent 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

In Saint-Laurent in September, the precipitation amount is 86 mm (3.4 in), spread over 11 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 86 mm (3.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec1301121547719915511812186121117239
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint-Laurent

In Saint-Laurent in September, humidity is 73%. With an average temperature of 14°C (57°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but potentially uncomfortable for extended periods. Travelers should stay hydrated and take breaks in shaded areas to fully appreciate the vibrant surroundings.

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 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%87%84%83%78%75%72%63%73%89%91%90%
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 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
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 Weather-1°C (30°F)130 mm (5.1 inches)91%low
February Weather2°C (36°F)112 mm (4.4 inches)87%moderate
March Weather5°C (41°F)154 mm (6.1 inches)84%high
April Weather8°C (47°F)77 mm (3.0 inches)83%high
May Weather12°C (53°F)199 mm (7.8 inches)78%very high
June Weather16°C (62°F)155 mm (6.1 inches)75%very high
July Weather18°C (65°F)118 mm (4.6 inches)72%very high
August Weather18°C (64°F)121 mm (4.8 inches)63%very high
September Weather14°C (57°F)86 mm (3.4 inches)73%high
October Weather9°C (49°F)121 mm (4.8 inches)89%moderate
November Weather4°C (39°F)117 mm (4.6 inches)90%moderate
December Weather0°C (33°F)239 mm (9.4 inches)90%low

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