September Weather in San Agustin, Mexico

Last updated: August 27, 2025

The average temperature in San Agustin, Mexico during September is a pleasant 21°C (71°F). Expect a minimum of 15°C (59°F) and a maximum of 31°C (87°F), making it a comfortable time to explore. However, be prepared for some rain, with precipitation reaching 132 mm (5.2 in) over 21 days. Don’t forget, the average humidity sits at a high 84%, so staying hydrated is key!

September Temperature in San Agustin

In September in San Agustin, the average temperature is 21°C (71°F). The maximum can reach 31°C (87°F), while the minimum can drop as low as 15°C (59°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

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

The chart illustrates September temperature patterns in San Agustin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Agustin, September typically has an average temperature of 21°C (71°F), with highs reaching up to 31°C (87°F) and lows dropping to around 15°C (59°F).

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

September Precipitation in San Agustin

In San Agustin in September, the total precipitation amount is 132 mm (5.2 in) spread over 21 days.

September Precipitation Trends in San Agustin

The chart displays monthly precipitation patterns in San Agustin, 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 Agustin, September typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 21 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 Agustin

In San Agustin 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 Agustin

This chart illustrates the average monthly humidity levels in San Agustin, 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 Agustin 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 Agustin

In San Agustin 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 Agustin.

Maximum UV Index Levels in San Agustin for September

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

Data source: San Agustin 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 Agustin Compares to Other Months

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

This table compares monthly weather conditions in San Agustin, 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)	8 mm (0.3 inches)	64%	very high
February Weather	19°C (66°F)	12 mm (0.5 inches)	57%	extreme
March Weather	22°C (71°F)	5 mm (0.2 inches)	46%	extreme
April Weather	23°C (74°F)	1 mm (0.0 inches)	42%	extreme
May Weather	24°C (76°F)	25 mm (1.0 inches)	51%	extreme
June Weather	23°C (74°F)	102 mm (4.0 inches)	74%	extreme
July Weather	22°C (71°F)	111 mm (4.4 inches)	79%	extreme
August Weather	22°C (72°F)	124 mm (4.9 inches)	81%	extreme
September Weather	21°C (71°F)	132 mm (5.2 inches)	84%	extreme
October Weather	21°C (70°F)	52 mm (2.1 inches)	75%	extreme
November Weather	19°C (67°F)	22 mm (0.9 inches)	71%	very high
December Weather	17°C (63°F)	5 mm (0.2 inches)	74%	very high