September Weather in Santa Teresa, Mexico

Last updated: August 27, 2025

In Santa Teresa, Mexico, the average temperature in September is a pleasant 22°C (72°F), with daily lows dipping to 16°C (61°F) and highs reaching up to 32°C (89°F). Expect 191 mm (7.5 in) of rainfall spread over approximately 23 days, contributing to an average humidity of 84%. Perfect for those who enjoy a lush, tropical atmosphere!

September Temperature in Santa Teresa

In September in Santa Teresa, the average temperature is 22°C (72°F). The maximum can reach 32°C (89°F) and the minimum can be as low as 16°C (61°F). This pleasant climate makes it an ideal time for outdoor activities and exploring the local attractions.

September Weather in Santa Teresa: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Teresa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Teresa, September typically has an average temperature of 22°C (72°F), with highs reaching up to 32°C (89°F) and lows dropping to around 16°C (61°F).

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

September Precipitation in Santa Teresa

In Santa Teresa in September, the precipitation amount is 191 mm (7.5 in) over the course of 23 days.

September Precipitation Trends in Santa Teresa

The chart displays monthly precipitation patterns in Santa Teresa, 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 Santa Teresa, September typically receives around 191 mm (7.5 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 Santa Teresa

In Santa Teresa in September humidity is 84%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel feel slightly stifling but also lending a vibrant energy to the atmosphere, which can be both invigorating and tiring as you explore.

September Average Humidity in Santa Teresa

This chart illustrates the average monthly humidity levels in Santa Teresa, 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 Santa Teresa 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 Santa Teresa

In Santa Teresa 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 Santa Teresa.

Maximum UV Index Levels in Santa Teresa for September

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

Data source: Santa Teresa 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 Santa Teresa Compares to Other Months

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

This table compares monthly weather conditions in Santa Teresa, 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)	14 mm (0.5 inches)	64%	very high
February Weather	18°C (65°F)	19 mm (0.8 inches)	57%	extreme
March Weather	21°C (70°F)	2 mm (0.1 inches)	46%	extreme
April Weather	22°C (72°F)	1 mm (0.0 inches)	42%	extreme
May Weather	24°C (75°F)	12 mm (0.5 inches)	51%	extreme
June Weather	24°C (76°F)	78 mm (3.1 inches)	74%	extreme
July Weather	22°C (72°F)	180 mm (7.1 inches)	79%	extreme
August Weather	22°C (72°F)	165 mm (6.5 inches)	81%	extreme
September Weather	22°C (72°F)	191 mm (7.5 inches)	84%	extreme
October Weather	22°C (71°F)	74 mm (2.9 inches)	75%	extreme
November Weather	20°C (68°F)	15 mm (0.6 inches)	71%	very high
December Weather	17°C (63°F)	17 mm (0.7 inches)	74%	very high