September Weather in Chilillos, Mexico

Last updated: August 27, 2025

In Chilillos, Mexico, the average temperature in September hovers around 26°C (79°F), with comfortable lows of 21°C (70°F) and peaks reaching up to 33°C (92°F). Expect a fair amount of rain, with 220 mm (8.7 in) of precipitation spread over 25 days. Humidity levels are high, averaging around 83%, creating a warm and tropical atmosphere.

September Temperature in Chilillos

In September, in Chilillos, the average temperature is 26°C (79°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 21°C (70°F). This pleasant climate makes Chilillos an ideal destination for travelers seeking warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in Chilillos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chilillos, September typically has an average temperature of 26°C (79°F), with highs reaching up to 33°C (92°F) and lows dropping to around 21°C (70°F).

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

September Precipitation in Chilillos

In Chilillos in September, the precipitation amount is 220 mm (8.7 in) spread over 25 days, indicating a relatively wet period for the area.

September Precipitation Trends in Chilillos

The chart displays monthly precipitation patterns in Chilillos, 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 Chilillos, September typically receives around 220 mm (8.7 inches) of precipitation spread over approximately 25 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Chilillos

In Chilillos in September, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

September Average Humidity in Chilillos

This chart illustrates the average monthly humidity levels in Chilillos, 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 Chilillos is approximately 83%, 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 Chilillos

In Chilillos in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Chilillos.

Maximum UV Index Levels in Chilillos for September

The chart shows the monthly maximum UV Index (UVI) for Chilillos 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 Chilillos typically reaches 12, which falls under the extreme exposure category.

Data source: Chilillos 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 Chilillos Compares to Other Months

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

This table compares monthly weather conditions in Chilillos, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	19°C (67°F)	17 mm (0.7 inches)	74%	very high
February Weather	20°C (69°F)	25 mm (1.0 inches)	66%	very high
March Weather	22°C (71°F)	0 mm (0.0 inches)	61%	extreme
April Weather	23°C (74°F)	0 mm (0.0 inches)	56%	extreme
May Weather	25°C (78°F)	1 mm (0.0 inches)	61%	extreme
June Weather	27°C (80°F)	65 mm (2.6 inches)	73%	extreme
July Weather	27°C (81°F)	173 mm (6.8 inches)	82%	extreme
August Weather	27°C (81°F)	278 mm (10.9 inches)	83%	extreme
September Weather	26°C (79°F)	220 mm (8.7 inches)	83%	extreme
October Weather	26°C (79°F)	135 mm (5.3 inches)	78%	extreme
November Weather	23°C (74°F)	13 mm (0.5 inches)	77%	very high
December Weather	20°C (69°F)	18 mm (0.7 inches)	78%	high