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September Weather in San Lorenzo, Mexico

Last updated: August 27, 2025

In San Lorenzo, Mexico, the average temperature in September is a comfortable 23°C (74°F), with variations ranging from a minimum of 17°C (64°F) to a maximum of 32°C (90°F). Expect a substantial precipitation amount of 380 mm (15.0 in) spread over 29 days, contributing to a high average humidity of 82%. Stay prepared for both warm days and occasional showers!

September Temperature in San Lorenzo

In September in San Lorenzo, the average temperature is 23°C (74°F). Maximum temperatures can reach 32°C (90°F), while minimums can drop to 17°C (64°F). This makes it an ideal time for traveling, offering warm days and comfortable evenings for exploration and adventure.

September Weather in San Lorenzo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Lorenzo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Lorenzo, September typically has an average temperature of 23°C (74°F), with highs reaching up to 32°C (90°F) and lows dropping to around 17°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec737476777875757474747473
Data source: Temperature data for San Lorenzo 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 San Lorenzo

In San Lorenzo in September, the total precipitation amount is 380 mm (15.0 in) spread over 29 days.

September Precipitation Trends in San Lorenzo

The chart displays monthly precipitation patterns in San Lorenzo, 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 San Lorenzo, September typically receives around 380 mm (15.0 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec9313181203492443603802583418
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Lorenzo

In San Lorenzo in September, humidity is 82%. With an average temperature of 23°C (74°F), this humidity feels like you are walking through a warm, damp blanket, making travel a bit uncomfortable and sticky as you navigate the air thick with moisture.

September Average Humidity in San Lorenzo

This chart illustrates the average monthly humidity levels in San Lorenzo, 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 San Lorenzo is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%61%59%62%73%78%79%82%82%79%72%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Lorenzo

In San Lorenzo in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Lorenzo, you can check here.

Maximum UV Index Levels in San Lorenzo for September

The chart shows the monthly maximum UV Index (UVI) for San Lorenzo 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 San Lorenzo typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141414131412109
Data source: San Lorenzo 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 San Lorenzo Compares to Other Months

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

This table compares monthly weather conditions in San Lorenzo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (73°F)9 mm (0.4 inches)65%very high
February Weather23°C (74°F)3 mm (0.1 inches)61%extreme
March Weather24°C (76°F)13 mm (0.5 inches)59%extreme
April Weather25°C (78°F)17 mm (0.7 inches)62%extreme
May Weather25°C (78°F)120 mm (4.7 inches)73%extreme
June Weather24°C (75°F)349 mm (13.7 inches)78%extreme
July Weather24°C (75°F)244 mm (9.6 inches)79%extreme
August Weather23°C (74°F)360 mm (14.2 inches)82%extreme
September Weather23°C (74°F)380 mm (15.0 inches)82%extreme
October Weather23°C (74°F)258 mm (10.2 inches)79%extreme
November Weather23°C (74°F)34 mm (1.3 inches)72%very high
December Weather23°C (73°F)18 mm (0.7 inches)70%very high

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