September Weather in Cerro Prieto, Mexico

Last updated: August 27, 2025

In Cerro Prieto, Mexico, the average temperature in September hovers around 16°C (61°F), with a minimum of 8°C (46°F) and a maximum reaching up to 26°C (79°F). Be prepared for the possibility of rain, as the area experiences an average precipitation of 340 mm (13.4 in) over 28 days. The air is quite humid too, with an average humidity level of 85%, making it feel even more sultry.

September Temperature in Cerro Prieto

In September in Cerro Prieto, the average temperature is 16°C (61°F). Maximums can reach 26°C (79°F) and minimums can be as low as 8°C (46°F). This pleasant climate makes it an ideal time for outdoor activities and exploration.

September Weather in Cerro Prieto: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cerro Prieto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cerro Prieto, September typically has an average temperature of 16°C (61°F), with highs reaching up to 26°C (79°F) and lows dropping to around 8°C (46°F).

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

September Precipitation in Cerro Prieto

In Cerro Prieto in September, the total precipitation amount is 340 mm (13.4 in) spread over a period of 28 days.

September Precipitation Trends in Cerro Prieto

The chart displays monthly precipitation patterns in Cerro Prieto, 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 Cerro Prieto, September typically receives around 340 mm (13.4 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 Cerro Prieto

In Cerro Prieto in September, humidity is 85%. With an average temperature of 16°C (61°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities feel sticky and the air heavy, which can be challenging for traveling and exploring the area comfortably.

September Average Humidity in Cerro Prieto

This chart illustrates the average monthly humidity levels in Cerro Prieto, 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 Cerro Prieto is approximately 85%, 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 Cerro Prieto

In Cerro Prieto 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 Cerro Prieto, you can check here.

Maximum UV Index Levels in Cerro Prieto for September

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

Data source: Cerro Prieto 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 Cerro Prieto Compares to Other Months

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

This table compares monthly weather conditions in Cerro Prieto, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	17 mm (0.7 inches)	70%	very high
February Weather	13°C (56°F)	13 mm (0.5 inches)	64%	extreme
March Weather	16°C (60°F)	23 mm (0.9 inches)	54%	extreme
April Weather	17°C (63°F)	18 mm (0.7 inches)	61%	extreme
May Weather	18°C (64°F)	106 mm (4.2 inches)	75%	extreme
June Weather	17°C (62°F)	317 mm (12.5 inches)	83%	extreme
July Weather	16°C (61°F)	458 mm (18.0 inches)	83%	extreme
August Weather	16°C (61°F)	435 mm (17.1 inches)	85%	extreme
September Weather	16°C (61°F)	340 mm (13.4 inches)	85%	extreme
October Weather	15°C (60°F)	142 mm (5.6 inches)	79%	extreme
November Weather	14°C (57°F)	53 mm (2.1 inches)	76%	very high
December Weather	12°C (54°F)	10 mm (0.4 inches)	74%	very high