September Weather in Cupuan del Rio, Mexico

Last updated: August 27, 2025

In September, the average temperature in Cupuan del Rio, Mexico hovers around 26°C (79°F). Expect a comfortable minimum of 20°C (68°F) and occasional peaks at 34°C (94°F). However, do come prepared as the area experiences 225 mm (8.9 in) of precipitation spread across 23 days, accompanied by a high average humidity of 85%. Stay dry and enjoy your visit!

September Temperature in Cupuan del Rio

In September in Cupuan del Rio, the average temperature is 26°C (79°F), with maximums reaching 34°C (94°F) and minimums dipping as low as 20°C (68°F). This pleasant climate makes Cupuan del Rio an ideal destination for travelers looking to escape to warm and comfortable weather.

September Weather in Cupuan del Rio: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cupuan del Rio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cupuan del Rio, September typically has an average temperature of 26°C (79°F), with highs reaching up to 34°C (94°F) and lows dropping to around 20°C (68°F).

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

September Precipitation in Cupuan del Rio

In Cupuan del Rio in September, the precipitation amount is 225 mm (8.9 in) over the course of 23 days.

September Precipitation Trends in Cupuan del Rio

The chart displays monthly precipitation patterns in Cupuan del Rio, 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 Cupuan del Rio, September typically receives around 225 mm (8.9 inches) of precipitation spread over approximately 23 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 Cupuan del Rio

In Cupuan del Rio in September, humidity is 85%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities feel stifling and exhausting for travelers.

September Average Humidity in Cupuan del Rio

This chart illustrates the average monthly humidity levels in Cupuan del Rio, 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 Cupuan del Rio 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 Cupuan del Rio

In Cupuan del Rio 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 Cupuan del Rio.

Maximum UV Index Levels in Cupuan del Rio for September

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

Data source: Cupuan del Rio 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 Cupuan del Rio Compares to Other Months

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

This table compares monthly weather conditions in Cupuan del Rio, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	10 mm (0.4 inches)	70%	very high
February Weather	24°C (76°F)	10 mm (0.4 inches)	64%	extreme
March Weather	26°C (79°F)	4 mm (0.2 inches)	54%	extreme
April Weather	27°C (80°F)	1 mm (0.0 inches)	61%	extreme
May Weather	28°C (82°F)	22 mm (0.9 inches)	75%	extreme
June Weather	27°C (81°F)	166 mm (6.5 inches)	83%	extreme
July Weather	27°C (80°F)	201 mm (7.9 inches)	83%	extreme
August Weather	26°C (79°F)	247 mm (9.7 inches)	85%	extreme
September Weather	26°C (79°F)	225 mm (8.9 inches)	85%	extreme
October Weather	26°C (79°F)	166 mm (6.5 inches)	79%	extreme
November Weather	25°C (77°F)	66 mm (2.6 inches)	76%	very high
December Weather	23°C (74°F)	15 mm (0.6 inches)	74%	very high