September Weather in Atlahuilco, Mexico

Last updated: August 27, 2025

In September, the average temperature in Atlahuilco, Mexico hovers around 20°C (68°F). Daytime highs can reach up to 29°C (84°F), while the mercury can dip as low as 11°C (53°F) at night. Expect 247 mm (9.7 in) of precipitation over 25 days, contributing to an average humidity level of 86%.

September Temperature in Atlahuilco

In September in Atlahuilco, the average temperature is 20°C (68°F). The maximum can reach 29°C (84°F) and the minimum can be as low as 11°C (53°F). This mild and pleasant climate makes it an ideal time to explore and enjoy outdoor activities in Atlahuilco.

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

The chart illustrates September temperature patterns in Atlahuilco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Atlahuilco, September typically has an average temperature of 20°C (68°F), with highs reaching up to 29°C (84°F) and lows dropping to around 11°C (53°F).

Data source: Temperature data for Atlahuilco generated using information from the Copernicus Climate Change Service.

September Precipitation in Atlahuilco

In Atlahuilco in September, the precipitation amount is 247 mm (9.7 in) over the course of 25 days.

September Precipitation Trends in Atlahuilco

The chart displays monthly precipitation patterns in Atlahuilco, 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 Atlahuilco, September typically receives around 247 mm (9.7 inches) of precipitation spread over approximately 25 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Atlahuilco

In Atlahuilco in September, humidity is 86%. With an average temperature of 20°C (68°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities challenging and necessitating frequent breaks for hydration and shade while traveling.

September Average Humidity in Atlahuilco

This chart illustrates the average monthly humidity levels in Atlahuilco, 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 Atlahuilco is approximately 86%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Atlahuilco

In Atlahuilco 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 Atlahuilco, you can check here.

Maximum UV Index Levels in Atlahuilco for September

The chart shows the monthly maximum UV Index (UVI) for Atlahuilco 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 Atlahuilco typically reaches 14, which falls under the extreme exposure category.

Data source: Atlahuilco 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 Atlahuilco Compares to Other Months

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

This table compares monthly weather conditions in Atlahuilco, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	14°C (58°F)	110 mm (4.3 inches)	88%	very high
February Weather	16°C (61°F)	87 mm (3.4 inches)	86%	extreme
March Weather	17°C (63°F)	129 mm (5.1 inches)	84%	extreme
April Weather	19°C (67°F)	159 mm (6.3 inches)	81%	extreme
May Weather	20°C (69°F)	241 mm (9.5 inches)	82%	extreme
June Weather	20°C (68°F)	268 mm (10.6 inches)	81%	extreme
July Weather	19°C (67°F)	141 mm (5.5 inches)	81%	extreme
August Weather	20°C (68°F)	162 mm (6.4 inches)	82%	extreme
September Weather	20°C (68°F)	247 mm (9.7 inches)	86%	extreme
October Weather	19°C (66°F)	200 mm (7.9 inches)	90%	extreme
November Weather	16°C (62°F)	145 mm (5.7 inches)	91%	very high
December Weather	15°C (59°F)	81 mm (3.2 inches)	91%	very high