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September Weather in Santa Teresa, Mexico

Last updated: August 27, 2025

In September, the average temperature in Santa Teresa, Mexico is a pleasant 24°C (76°F), with a minimum of 18°C (65°F) and a maximum reaching 33°C (92°F). Expect considerable rainfall, with 272 mm (10.7 in) spread over 28 days, contributing to an average humidity of 82%. Embrace the warmth and prepare for some refreshing showers!

September Temperature in Santa Teresa

In September in Santa Teresa, the average temperature is 24°C (76°F). The maximum can reach 33°C (92°F), and the minimum can be as low as 18°C (65°F). It's the perfect time for travelers to enjoy pleasant weather while exploring all that Santa Teresa has to offer.

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

The chart illustrates September temperature patterns in Santa Teresa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Teresa, September typically has an average temperature of 24°C (76°F), with highs reaching up to 33°C (92°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec737680838378777775767573
Data source: Temperature data for Santa Teresa 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 Teresa

In Santa Teresa in September, the precipitation amount is 272 mm (10.7 in) falling over the course of 28 days.

September Precipitation Trends in Santa Teresa

The chart displays monthly precipitation patterns in Santa Teresa, 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 Teresa, September typically receives around 272 mm (10.7 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec243662245198286272133242
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Teresa

In Santa Teresa in September, humidity is 82%. With an average temperature of 24°C (76°F), this humidity feels like wearing a warm, damp blanket, making travel uncomfortable and sticky as you explore.

September Average Humidity in Santa Teresa

This chart illustrates the average monthly humidity levels in Santa Teresa, 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 Teresa is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%78%75%71%77%76%68%70%82%91%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santa Teresa

In Santa Teresa 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 Teresa, you can check here.

Maximum UV Index Levels in Santa Teresa for September

The chart shows the monthly maximum UV Index (UVI) for Santa Teresa 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 Teresa typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1012131413141413141198
Data source: Santa Teresa 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 Teresa Compares to Other Months

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

This table compares monthly weather conditions in Santa Teresa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (73°F)2 mm (0.1 inches)84%very high
February Weather25°C (77°F)4 mm (0.1 inches)78%extreme
March Weather27°C (81°F)3 mm (0.1 inches)75%extreme
April Weather28°C (83°F)6 mm (0.3 inches)70%extreme
May Weather28°C (83°F)62 mm (2.4 inches)77%extreme
June Weather25°C (78°F)245 mm (9.6 inches)76%extreme
July Weather25°C (77°F)198 mm (7.8 inches)68%extreme
August Weather25°C (77°F)286 mm (11.3 inches)70%extreme
September Weather24°C (76°F)272 mm (10.7 inches)82%extreme
October Weather24°C (76°F)133 mm (5.2 inches)91%extreme
November Weather24°C (75°F)24 mm (0.9 inches)89%very high
December Weather23°C (73°F)2 mm (0.1 inches)88%very high

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