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September Weather in Santiago Atzitzihuacan, Mexico

Last updated: August 27, 2025

In September, the average temperature in Santiago Atzitzihuacan, Mexico hovers around 21°C (69°F). Expect a minimum of 13°C (56°F) and a comfortable maximum of 29°C (85°F). With 314 mm (12.4 in) of precipitation over 26 days, it's a month where the air feels quite humid, with an average humidity level of 82%. Stay prepared for the wet weather!

September Temperature in Santiago Atzitzihuacan

In September in Santiago Atzitzihuacan, the average temperature is 21°C (69°F). The maximum can reach 29°C (85°F) and the minimum can be as low as 13°C (56°F). This weather makes it a great time for travelers to explore the outdoors and enjoy various activities comfortably.

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

The chart illustrates September temperature patterns in Santiago Atzitzihuacan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago Atzitzihuacan, September typically has an average temperature of 21°C (69°F), with highs reaching up to 29°C (85°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec646771747471717169696764
Data source: Temperature data for Santiago Atzitzihuacan 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 Atzitzihuacan

In Santiago Atzitzihuacan in September, the total precipitation amount is 314 mm (12.4 in) spread over 26 days.

September Precipitation Trends in Santiago Atzitzihuacan

The chart displays monthly precipitation patterns in Santiago Atzitzihuacan, 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 Atzitzihuacan, September typically receives around 314 mm (12.4 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec561336132277198254315120364
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santiago Atzitzihuacan

In Santiago Atzitzihuacan in September humidity is 82%. With an average temperature of 21°C (69°F), this humidity feels like a sweltering embrace, making outdoor activities feel more strenuous and prompting travelers to seek shade and cooling breezes.

September Average Humidity in Santiago Atzitzihuacan

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

In Santiago Atzitzihuacan 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 Atzitzihuacan, you can check here.

Maximum UV Index Levels in Santiago Atzitzihuacan for September

The chart shows the monthly maximum UV Index (UVI) for Santiago Atzitzihuacan 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 Atzitzihuacan typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141414141412109
Data source: Santiago Atzitzihuacan 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 Atzitzihuacan Compares to Other Months

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

This table compares monthly weather conditions in Santiago Atzitzihuacan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)4 mm (0.2 inches)84%very high
February Weather20°C (68°F)6 mm (0.2 inches)78%extreme
March Weather22°C (71°F)13 mm (0.5 inches)75%extreme
April Weather23°C (74°F)36 mm (1.4 inches)70%extreme
May Weather23°C (74°F)131 mm (5.2 inches)77%extreme
June Weather22°C (71°F)277 mm (10.9 inches)76%extreme
July Weather21°C (71°F)198 mm (7.8 inches)68%extreme
August Weather21°C (71°F)254 mm (10.0 inches)70%extreme
September Weather21°C (69°F)314 mm (12.4 inches)82%extreme
October Weather20°C (69°F)120 mm (4.7 inches)91%extreme
November Weather19°C (67°F)36 mm (1.4 inches)89%very high
December Weather18°C (65°F)4 mm (0.1 inches)88%very high

Compare Santiago Atzitzihuacan's Climate with Cities Worldwide