September Weather in San Gregorio, Mexico

Last updated: August 27, 2025

In September, the average temperature in San Gregorio, Mexico is a comfortable 20°C (68°F). You can expect a minimum temperature of 11°C (52°F) and a maximum of 31°C (88°F). However, don't forget your umbrella, as the region receives an average precipitation of 164 mm (6.4 in) over 20 days. With an average humidity of 81%, it’s wise to stay hydrated and enjoy the lush scenery this climate fosters!

September Temperature in San Gregorio

In September in San Gregorio, the average temperature is 20°C (68°F), with maximums reaching 31°C (88°F) and minimums dropping as low as 11°C (52°F). This mild climate makes San Gregorio an ideal destination for travelers looking to enjoy pleasant weather.

September Weather in San Gregorio: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Gregorio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Gregorio, September typically has an average temperature of 20°C (68°F), with highs reaching up to 31°C (88°F) and lows dropping to around 11°C (52°F).

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

September Precipitation in San Gregorio

In San Gregorio in September, the total precipitation amount is 164 mm (6.4 in), recorded over a span of 20 days.

September Precipitation Trends in San Gregorio

The chart displays monthly precipitation patterns in San Gregorio, 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 Gregorio, September typically receives around 164 mm (6.4 inches) of precipitation spread over approximately 20 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 San Gregorio

In San Gregorio in September humidity is 81%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace that can make outdoor activities feel steamy and exhausting, potentially leading travelers to seek shade or a refreshing drink more often.

September Average Humidity in San Gregorio

This chart illustrates the average monthly humidity levels in San Gregorio, 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 Gregorio is approximately 81%, 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 Gregorio

In San Gregorio 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 Gregorio.

Maximum UV Index Levels in San Gregorio for September

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

Data source: San Gregorio 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 Gregorio Compares to Other Months

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

This table compares monthly weather conditions in San Gregorio, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (60°F)	5 mm (0.2 inches)	74%	very high
February Weather	18°C (65°F)	6 mm (0.2 inches)	65%	extreme
March Weather	21°C (70°F)	7 mm (0.3 inches)	58%	extreme
April Weather	23°C (73°F)	3 mm (0.1 inches)	58%	extreme
May Weather	24°C (75°F)	33 mm (1.3 inches)	67%	extreme
June Weather	22°C (73°F)	156 mm (6.2 inches)	76%	extreme
July Weather	20°C (69°F)	203 mm (8.0 inches)	67%	extreme
August Weather	20°C (69°F)	166 mm (6.5 inches)	68%	extreme
September Weather	20°C (68°F)	164 mm (6.4 inches)	81%	extreme
October Weather	20°C (68°F)	57 mm (2.3 inches)	83%	extreme
November Weather	18°C (64°F)	19 mm (0.8 inches)	84%	very high
December Weather	16°C (60°F)	3 mm (0.1 inches)	81%	very high