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September Weather in Santiago Tetepec, Mexico

Last updated: August 27, 2025

In Santiago Tetepec, Mexico, the average temperature in September is a warm 26°C (78°F), with minimums dropping to 20°C (68°F) and maximums soaring to 33°C (93°F). Expect approximately 389 mm (15.3 in) of rain spread across 29 days, contributing to a high average humidity of 82%. Whether you're enjoying the sunshine or the refreshing rain, be prepared for a vibrant climate!

September Temperature in Santiago Tetepec

In September in Santiago Tetepec, the average temperature is 26°C (78°F), with maximums reaching 33°C (93°F) and minimums dropping as low as 20°C (68°F). This pleasant climate makes Santiago Tetepec an ideal destination for travelers looking to enjoy warm weather and outdoor activities.

September Weather in Santiago Tetepec: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santiago Tetepec, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago Tetepec, September typically has an average temperature of 26°C (78°F), with highs reaching up to 33°C (93°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec777879818279797878787877
Data source: Temperature data for Santiago Tetepec 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 Santiago Tetepec

In Santiago Tetepec in September, the precipitation amount is 389 mm (15.3 in) spread over 29 days.

September Precipitation Trends in Santiago Tetepec

The chart displays monthly precipitation patterns in Santiago Tetepec, 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 Santiago Tetepec, September typically receives around 389 mm (15.3 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec5244813202233583892862816
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santiago Tetepec

In Santiago Tetepec in September, humidity is 82%. With an average temperature of 26°C (78°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and the air almost tangible, which can be quite challenging for traveling.

September Average Humidity in Santiago Tetepec

This chart illustrates the average monthly humidity levels in Santiago Tetepec, 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 Santiago Tetepec 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 Santiago Tetepec

In Santiago Tetepec 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 Santiago Tetepec, you can check here.

Maximum UV Index Levels in Santiago Tetepec for September

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

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

This table compares monthly weather conditions in Santiago Tetepec, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)5 mm (0.2 inches)65%very high
February Weather25°C (78°F)2 mm (0.1 inches)61%extreme
March Weather26°C (80°F)4 mm (0.1 inches)59%extreme
April Weather27°C (81°F)4 mm (0.2 inches)62%extreme
May Weather28°C (82°F)81 mm (3.2 inches)73%extreme
June Weather26°C (79°F)320 mm (12.6 inches)78%extreme
July Weather26°C (80°F)222 mm (8.8 inches)79%extreme
August Weather26°C (79°F)358 mm (14.1 inches)82%extreme
September Weather26°C (78°F)389 mm (15.3 inches)82%extreme
October Weather25°C (78°F)286 mm (11.2 inches)79%extreme
November Weather25°C (78°F)28 mm (1.1 inches)72%very high
December Weather25°C (77°F)16 mm (0.6 inches)70%very high

Compare Santiago Tetepec's Climate with Cities Worldwide