September Weather in Tonalapan, Mexico

Last updated: August 27, 2025

In September, the average temperature in Tonalapan, Mexico reaches a warm 27°C (81°F). Daily highs can soar to a maximum of 34°C (94°F), while nights may cool down to a comfortable 22°C (71°F). It's worth noting that this month experiences significant precipitation, averaging 322 mm (12.7 in) over approximately 26 days, contributing to an average humidity of 86%.

September Temperature in Tonalapan

In September in Tonalapan, the average temperature is 27°C (81°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop to as low as 22°C (71°F). This pleasant climate makes Tonalapan an ideal destination for travelers seeking warm and comfortable weather.

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

The chart illustrates September temperature patterns in Tonalapan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tonalapan, September typically has an average temperature of 27°C (81°F), with highs reaching up to 34°C (94°F) and lows dropping to around 22°C (71°F).

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

September Precipitation in Tonalapan

In Tonalapan in September, the precipitation amount reaches 322 mm (12.7 in) over the course of 26 days.

September Precipitation Trends in Tonalapan

The chart displays monthly precipitation patterns in Tonalapan, 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 Tonalapan, September typically receives around 322 mm (12.7 inches) of precipitation spread over approximately 26 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 Tonalapan

In Tonalapan in September, humidity is 86%. With an average temperature of 27°C (81°F), this humidity feels like walking through a steamy blanket, making traveling feel heavy and exhausting as each step absorbs the warm, moist air.

September Average Humidity in Tonalapan

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

In Tonalapan in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Tonalapan.

Maximum UV Index Levels in Tonalapan for September

The chart shows the monthly maximum UV Index (UVI) for Tonalapan 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 Tonalapan typically reaches 13, which falls under the extreme exposure category.

Data source: Tonalapan 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 Tonalapan Compares to Other Months

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

This table compares monthly weather conditions in Tonalapan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (71°F)	115 mm (4.5 inches)	88%	very high
February Weather	23°C (73°F)	89 mm (3.5 inches)	86%	extreme
March Weather	24°C (76°F)	58 mm (2.3 inches)	84%	extreme
April Weather	26°C (80°F)	48 mm (1.9 inches)	81%	extreme
May Weather	28°C (83°F)	69 mm (2.7 inches)	82%	extreme
June Weather	27°C (82°F)	285 mm (11.2 inches)	81%	extreme
July Weather	27°C (81°F)	226 mm (8.9 inches)	81%	extreme
August Weather	27°C (81°F)	250 mm (9.8 inches)	82%	extreme
September Weather	27°C (81°F)	322 mm (12.7 inches)	86%	extreme
October Weather	26°C (79°F)	358 mm (14.1 inches)	90%	extreme
November Weather	24°C (75°F)	222 mm (8.7 inches)	91%	very high
December Weather	22°C (72°F)	109 mm (4.3 inches)	91%	very high