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September Weather in Santa Gertrudis, Mexico

Last updated: August 27, 2025

In Santa Gertrudis, Mexico, the average temperature in September hovers around 18°C (65°F), with a pleasant range that dips to a minimum of 11°C (52°F) and peaks at a delightful 28°C (82°F). Expect 236 mm (9.3 in) of precipitation spread across 22 days, making it a notably wet month. With an average humidity of 85%, you'll definitely want to embrace the cozy, damp atmosphere!

September Temperature in Santa Gertrudis

In September in Santa Gertrudis, the average temperature is 18°C (65°F). The maximum can reach 28°C (82°F), while the minimum can be as low as 11°C (52°F). This mild climate makes it an ideal time for exploring and enjoying outdoor activities.

September Weather in Santa Gertrudis: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Gertrudis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Gertrudis, September typically has an average temperature of 18°C (65°F), with highs reaching up to 28°C (82°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec586166697169666665646158
Data source: Temperature data for Santa Gertrudis 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 Santa Gertrudis

In Santa Gertrudis in September, the precipitation amount is 236 mm (9.3 in) distributed over 22 days.

September Precipitation Trends in Santa Gertrudis

The chart displays monthly precipitation patterns in Santa Gertrudis, 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 Santa Gertrudis, September typically receives around 236 mm (9.3 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec81313541179260240236112317
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Gertrudis

In Santa Gertrudis in September humidity is 85%. With an average temperature of 18°C (65°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities challenging but creating a lush, vibrant atmosphere that invites exploration.

September Average Humidity in Santa Gertrudis

This chart illustrates the average monthly humidity levels in Santa Gertrudis, 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 Santa Gertrudis is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%64%54%61%75%83%83%85%85%79%76%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santa Gertrudis

In Santa Gertrudis 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 Santa Gertrudis, you can check here.

Maximum UV Index Levels in Santa Gertrudis for September

The chart shows the monthly maximum UV Index (UVI) for Santa Gertrudis 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 Santa Gertrudis typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911141514141413141298
Data source: Santa Gertrudis 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 Santa Gertrudis Compares to Other Months

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

This table compares monthly weather conditions in Santa Gertrudis, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (58°F)8 mm (0.3 inches)70%very high
February Weather16°C (62°F)13 mm (0.5 inches)64%extreme
March Weather19°C (66°F)13 mm (0.5 inches)54%extreme
April Weather21°C (69°F)5 mm (0.2 inches)61%extreme
May Weather22°C (72°F)41 mm (1.6 inches)75%extreme
June Weather21°C (69°F)178 mm (7.0 inches)83%extreme
July Weather19°C (66°F)260 mm (10.2 inches)83%extreme
August Weather19°C (66°F)240 mm (9.4 inches)85%extreme
September Weather18°C (65°F)236 mm (9.3 inches)85%extreme
October Weather18°C (64°F)111 mm (4.4 inches)79%extreme
November Weather16°C (61°F)31 mm (1.2 inches)76%very high
December Weather14°C (58°F)7 mm (0.3 inches)74%very high

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