September Weather in Monte Alto, Mexico

Last updated: August 27, 2025

In September, the average temperature in Monte Alto, Mexico is a warm 28°C (82°F), making it ideal for outdoor activities. Be prepared for temperatures to range from a comfortable 22°C (72°F) to a scorching 37°C (99°F). However, with an average precipitation of 234 mm (9.2 in) over 25 days, and a high humidity level of 87%, staying hydrated is essential. Enjoy the vibrant atmosphere, but plan accordingly for the weather!

September Temperature in Monte Alto

In September in Monte Alto, the average temperature is 28°C (82°F), with maximums reaching up to 37°C (99°F) and minimums dropping as low as 22°C (72°F). This climate makes Monte Alto an ideal destination for travelers seeking warm and pleasant weather.

September Weather in Monte Alto: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Monte Alto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monte Alto, September typically has an average temperature of 28°C (82°F), with highs reaching up to 37°C (99°F) and lows dropping to around 22°C (72°F).

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

September Precipitation in Monte Alto

In Monte Alto in September, the total precipitation amount is 234 mm (9.2 in) spread over 25 days.

September Precipitation Trends in Monte Alto

The chart displays monthly precipitation patterns in Monte Alto, 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 Monte Alto, September typically receives around 234 mm (9.2 inches) of precipitation spread over approximately 25 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 Monte Alto

In Monte Alto in September humidity is 87%. With an average temperature of 28°C (82°F), this humidity feels like a warm, thick blanket wrapping around you, making travel challenging as you navigate the air's heavy moisture.

September Average Humidity in Monte Alto

This chart illustrates the average monthly humidity levels in Monte Alto, 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 Monte Alto is approximately 87%, 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 Monte Alto

In Monte Alto 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 Monte Alto.

Maximum UV Index Levels in Monte Alto for September

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

Data source: Monte Alto 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 Monte Alto Compares to Other Months

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

This table compares monthly weather conditions in Monte Alto, 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 (73°F)	45 mm (1.8 inches)	83%	very high
February Weather	24°C (76°F)	32 mm (1.3 inches)	76%	extreme
March Weather	26°C (79°F)	18 mm (0.7 inches)	66%	extreme
April Weather	28°C (83°F)	18 mm (0.7 inches)	59%	extreme
May Weather	30°C (86°F)	39 mm (1.5 inches)	64%	extreme
June Weather	29°C (84°F)	202 mm (8.0 inches)	69%	extreme
July Weather	28°C (83°F)	172 mm (6.8 inches)	82%	extreme
August Weather	28°C (83°F)	224 mm (8.8 inches)	87%	extreme
September Weather	28°C (82°F)	234 mm (9.2 inches)	87%	extreme
October Weather	27°C (81°F)	169 mm (6.7 inches)	88%	extreme
November Weather	24°C (76°F)	96 mm (3.8 inches)	88%	very high
December Weather	23°C (74°F)	40 mm (1.6 inches)	88%	very high