September Weather in San Juan del Monte, Mexico

Last updated: August 27, 2025

In September, the average temperature in San Juan del Monte, Mexico is a pleasant 21°C (71°F), with a minimum of 14°C (57°F) and a maximum reaching up to 31°C (88°F). Expect a fair amount of rain, with precipitation totaling around 190 mm (7.5 in) spread over 20 days, contributing to an average humidity of 84%. Be prepared for a mix of warm days and refreshing showers!

September Temperature in San Juan del Monte

In September in San Juan del Monte, the average temperature is 21°C (71°F), with maximums reaching 31°C (88°F) and minimums dipping as low as 14°C (57°F). This mild climate makes San Juan del Monte a perfect destination for outdoor activities and exploration.

September Weather in San Juan del Monte: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Juan del Monte, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan del Monte, September typically has an average temperature of 21°C (71°F), with highs reaching up to 31°C (88°F) and lows dropping to around 14°C (57°F).

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

September Precipitation in San Juan del Monte

In San Juan del Monte in September, the precipitation amount is 190 mm (7.5 in) distributed over 20 days.

September Precipitation Trends in San Juan del Monte

The chart displays monthly precipitation patterns in San Juan del Monte, 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 San Juan del Monte, September typically receives around 190 mm (7.5 inches) of precipitation spread over approximately 20 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 San Juan del Monte

In San Juan del Monte in September, humidity is 84%. With an average temperature of 21°C (71°F), this humidity feels like a warm, muggy embrace that can leave travelers feeling sticky and sluggish, making outdoor adventures a bit more challenging but also invigorating in the right moments.

September Average Humidity in San Juan del Monte

This chart illustrates the average monthly humidity levels in San Juan del Monte, 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 San Juan del Monte is approximately 84%, 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 San Juan del Monte

In San Juan del Monte 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 San Juan del Monte.

Maximum UV Index Levels in San Juan del Monte for September

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

Data source: San Juan del Monte 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 San Juan del Monte Compares to Other Months

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

This table compares monthly weather conditions in San Juan del Monte, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	17°C (63°F)	9 mm (0.4 inches)	64%	very high
February Weather	19°C (66°F)	13 mm (0.5 inches)	57%	extreme
March Weather	21°C (71°F)	3 mm (0.1 inches)	46%	extreme
April Weather	23°C (74°F)	1 mm (0.0 inches)	42%	extreme
May Weather	25°C (77°F)	15 mm (0.6 inches)	51%	extreme
June Weather	24°C (76°F)	96 mm (3.8 inches)	74%	extreme
July Weather	22°C (72°F)	227 mm (8.9 inches)	79%	extreme
August Weather	22°C (72°F)	188 mm (7.4 inches)	81%	extreme
September Weather	21°C (71°F)	190 mm (7.5 inches)	84%	extreme
October Weather	21°C (70°F)	59 mm (2.3 inches)	75%	extreme
November Weather	19°C (67°F)	16 mm (0.6 inches)	71%	very high
December Weather	17°C (63°F)	10 mm (0.4 inches)	74%	very high