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September Weather in Santiago Tepetlapa, Mexico

Last updated: August 27, 2025

In Santiago Tepetlapa, Mexico, the average temperature in September hovers around 18°C (64°F), offering a pleasant climate. You'll experience a minimum temperature of 10°C (51°F) and can enjoy highs reaching up to 27°C (80°F). However, be prepared for some rain, as 574 mm (22.6 in) of precipitation typically falls over 29 days, with an average humidity level of 82%.

September Temperature in Santiago Tepetlapa

In September in Santiago Tepetlapa, the average temperature is 18°C (64°F). The maximum can reach 27°C (80°F) and the minimum can be as low as 10°C (51°F). This pleasant weather makes it a great time for travelers to explore outdoor activities and enjoy the local sights.

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

The chart illustrates September temperature patterns in Santiago Tepetlapa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago Tepetlapa, September typically has an average temperature of 18°C (64°F), with highs reaching up to 27°C (80°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec586266686765646464636058
Data source: Temperature data for Santiago Tepetlapa 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 Tepetlapa

In Santiago Tepetlapa in September, the total precipitation amount is 574 mm (22.6 in) spread over 29 days.

September Precipitation Trends in Santiago Tepetlapa

The chart displays monthly precipitation patterns in Santiago Tepetlapa, 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 Tepetlapa, September typically receives around 574 mm (22.6 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec1051332188482490581575339678
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santiago Tepetlapa

In Santiago Tepetlapa in September humidity is 82%. With an average temperature of 18°C (64°F), this humidity feels like a warm, muggy embrace that can make exploring the area feel stifling, leaving travelers drenched in sweat and longing for respite in the shade.

September Average Humidity in Santiago Tepetlapa

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

In Santiago Tepetlapa 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 Tepetlapa, you can check here.

Maximum UV Index Levels in Santiago Tepetlapa for September

The chart shows the monthly maximum UV Index (UVI) for Santiago Tepetlapa 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 Tepetlapa typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121415141414141412108
Data source: Santiago Tepetlapa 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 Tepetlapa Compares to Other Months

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

This table compares monthly weather conditions in Santiago Tepetlapa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (58°F)10 mm (0.4 inches)84%very high
February Weather16°C (62°F)5 mm (0.2 inches)78%extreme
March Weather19°C (66°F)13 mm (0.5 inches)75%extreme
April Weather20°C (68°F)32 mm (1.3 inches)70%extreme
May Weather20°C (68°F)188 mm (7.4 inches)77%extreme
June Weather18°C (65°F)482 mm (19.0 inches)76%extreme
July Weather18°C (64°F)490 mm (19.3 inches)68%extreme
August Weather18°C (64°F)581 mm (22.9 inches)70%extreme
September Weather18°C (64°F)574 mm (22.6 inches)82%extreme
October Weather17°C (63°F)339 mm (13.3 inches)91%extreme
November Weather15°C (60°F)67 mm (2.6 inches)89%very high
December Weather14°C (58°F)8 mm (0.3 inches)88%very high

Compare Santiago Tepetlapa's Climate with Cities Worldwide