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September Weather in Santiago Comaltepec, Mexico

Last updated: August 27, 2025

In September, the average temperature in Santiago Comaltepec, Mexico hovers around 17°C (64°F), with a minimum of 11°C (51°F) and a maximum reaching 26°C (78°F). Expect a fair amount of rain, with 446 mm (17.6 in) of precipitation spread over 28 days. The air is quite humid as well, with an average humidity level of 84%.

September Temperature in Santiago Comaltepec

In September in Santiago Comaltepec, the average temperature is 17°C (64°F), with maximums reaching 26°C (78°F) and minimums dropping to as low as 11°C (51°F). This pleasant climate makes Santiago Comaltepec an ideal destination for travelers seeking mild weather and enjoyable outdoor activities.

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

The chart illustrates September temperature patterns in Santiago Comaltepec, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago Comaltepec, September typically has an average temperature of 17°C (64°F), with highs reaching up to 26°C (78°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec565961646564636363625856
Data source: Temperature data for Santiago Comaltepec 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 Comaltepec

In Santiago Comaltepec in September, the total precipitation amount reaches 446 mm (17.6 in) over a span of 28 days.

September Precipitation Trends in Santiago Comaltepec

The chart displays monthly precipitation patterns in Santiago Comaltepec, 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 Comaltepec, September typically receives around 446 mm (17.6 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec75616711520441723436744633315655
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santiago Comaltepec

In Santiago Comaltepec in September, humidity is 84%. With an average temperature of 17°C (64°F), this humidity feels like a warm embrace, making it essential for travelers to stay hydrated and take frequent breaks in the shade to avoid feeling overly sticky and drained.

September Average Humidity in Santiago Comaltepec

This chart illustrates the average monthly humidity levels in Santiago Comaltepec, 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 Comaltepec is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%80%73%67%72%73%76%80%84%89%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santiago Comaltepec

In Santiago Comaltepec 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 Comaltepec, you can check here.

Maximum UV Index Levels in Santiago Comaltepec for September

The chart shows the monthly maximum UV Index (UVI) for Santiago Comaltepec 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 Comaltepec typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141415131412109
Data source: Santiago Comaltepec 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 Comaltepec Compares to Other Months

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

This table compares monthly weather conditions in Santiago Comaltepec, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (56°F)75 mm (3.0 inches)84%very high
February Weather15°C (59°F)61 mm (2.4 inches)80%extreme
March Weather16°C (61°F)66 mm (2.6 inches)73%extreme
April Weather18°C (64°F)115 mm (4.5 inches)67%extreme
May Weather18°C (65°F)204 mm (8.0 inches)72%extreme
June Weather18°C (64°F)417 mm (16.4 inches)73%extreme
July Weather17°C (63°F)234 mm (9.2 inches)76%extreme
August Weather17°C (63°F)367 mm (14.4 inches)80%extreme
September Weather17°C (64°F)446 mm (17.6 inches)84%extreme
October Weather17°C (62°F)333 mm (13.1 inches)89%extreme
November Weather15°C (58°F)156 mm (6.1 inches)88%very high
December Weather14°C (57°F)55 mm (2.2 inches)88%very high

Compare Santiago Comaltepec's Climate with Cities Worldwide