September Weather in Calpulalpan, Mexico

Last updated: August 27, 2025

In September, the average temperature in Calpulalpan, Mexico hovers around 18°C (65°F). You'll experience a pleasant range, with minimums dipping to 10°C (50°F) and maximums reaching up to 27°C (81°F). However, keep an umbrella handy, as precipitation averages 339 mm (13.3 in) over 28 days, contributing to a high humidity level of 86%.

September Temperature in Calpulalpan

In September in Calpulalpan, the average temperature is 18°C (65°F), with maximums reaching up to 27°C (81°F) and minimums dropping as low as 10°C (50°F). This pleasant weather makes it an ideal time for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Calpulalpan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Calpulalpan, September typically has an average temperature of 18°C (65°F), with highs reaching up to 27°C (81°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Calpulalpan

In Calpulalpan in September, the total precipitation amount is 339 mm (13.3 in) spread over the course of 28 days.

September Precipitation Trends in Calpulalpan

The chart displays monthly precipitation patterns in Calpulalpan, 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 Calpulalpan, September typically receives around 339 mm (13.3 inches) of precipitation spread over approximately 28 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 Calpulalpan

In Calpulalpan in September humidity is 86%. With an average temperature of 18°C (65°F), this humidity feels like you’re wrapped in a warm, heavy blanket, making outdoor activities feel quite muggy and sticky for traveling.

September Average Humidity in Calpulalpan

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

In Calpulalpan 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 Calpulalpan, you can check here.

Maximum UV Index Levels in Calpulalpan for September

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

Data source: Calpulalpan 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 Calpulalpan Compares to Other Months

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

This table compares monthly weather conditions in Calpulalpan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (55°F)	88 mm (3.5 inches)	88%	very high
February Weather	15°C (58°F)	64 mm (2.5 inches)	86%	extreme
March Weather	16°C (61°F)	93 mm (3.7 inches)	84%	extreme
April Weather	18°C (65°F)	133 mm (5.2 inches)	81%	extreme
May Weather	19°C (67°F)	190 mm (7.5 inches)	82%	extreme
June Weather	19°C (66°F)	262 mm (10.3 inches)	81%	extreme
July Weather	18°C (65°F)	210 mm (8.3 inches)	81%	extreme
August Weather	18°C (65°F)	291 mm (11.4 inches)	82%	extreme
September Weather	18°C (65°F)	339 mm (13.3 inches)	86%	extreme
October Weather	17°C (63°F)	217 mm (8.5 inches)	90%	extreme
November Weather	15°C (59°F)	111 mm (4.4 inches)	91%	very high
December Weather	13°C (57°F)	51 mm (2.0 inches)	91%	very high