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September Weather in Alchichica, Mexico

Last updated: August 27, 2025

In September, the average temperature in Alchichica, Mexico hovers around 15°C (60°F), with a minimum dipping to 5°C (42°F) and a maximum reaching 24°C (76°F). Prepare for a fair amount of rain, as total precipitation can reach 171 mm (6.7 in) over approximately 21 days. Don’t forget to account for the average humidity of 82%, which adds a touch of tropical warmth to the air.

September Temperature in Alchichica

In September in Alchichica, the average temperature is 15°C (60°F). The maximum can reach 24°C (76°F), while the minimum can dip as low as 5°C (42°F). This pleasant climate makes Alchichica an ideal destination for travelers seeking mild weather and outdoor adventures.

September Weather in Alchichica: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Alchichica, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alchichica, September typically has an average temperature of 15°C (60°F), with highs reaching up to 24°C (76°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec525659616261606060585553
Data source: Temperature data for Alchichica 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 Alchichica

In Alchichica in September, the total precipitation amount is 171 mm (6.7 in) over a span of 21 days.

September Precipitation Trends in Alchichica

The chart displays monthly precipitation patterns in Alchichica, 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 Alchichica, September typically receives around 171 mm (6.7 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec14724618015195139171108337
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Alchichica

In Alchichica in September humidity is 82%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and draining, which can hinder your travel experience.

September Average Humidity in Alchichica

This chart illustrates the average monthly humidity levels in Alchichica, 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 Alchichica 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 Alchichica

In Alchichica 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 Alchichica, you can check here.

Maximum UV Index Levels in Alchichica for September

The chart shows the monthly maximum UV Index (UVI) for Alchichica 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 Alchichica typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121415151515141413109
Data source: Alchichica 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 Alchichica Compares to Other Months

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

This table compares monthly weather conditions in Alchichica, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)14 mm (0.6 inches)84%very high
February Weather13°C (56°F)7 mm (0.3 inches)78%extreme
March Weather15°C (59°F)24 mm (1.0 inches)75%extreme
April Weather16°C (61°F)61 mm (2.4 inches)70%extreme
May Weather17°C (63°F)80 mm (3.2 inches)77%extreme
June Weather16°C (61°F)151 mm (5.9 inches)76%extreme
July Weather15°C (60°F)95 mm (3.7 inches)68%extreme
August Weather16°C (60°F)139 mm (5.5 inches)70%extreme
September Weather15°C (60°F)171 mm (6.7 inches)82%extreme
October Weather14°C (58°F)108 mm (4.2 inches)91%extreme
November Weather13°C (55°F)33 mm (1.3 inches)89%very high
December Weather12°C (54°F)7 mm (0.3 inches)88%very high

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