September Weather in El Tesoro, Mexico

Last updated: August 27, 2025

In September, the average temperature in El Tesoro, Mexico hovers around 27°C (82°F), with minimums dropping to 21°C (70°F) and reaching maximum highs of 37°C (99°F). While you enjoy the warmth, be prepared for 318 mm (12.5 in) of precipitation spread over 25 days, resulting in an average humidity of a cozy 86%.

September Temperature in El Tesoro

In September in El Tesoro, the average temperature is 27°C (82°F). Maximum temperatures can reach 37°C (99°F), while minimums can be as low as 21°C (70°F). Travelers should be prepared for warm weather and pack accordingly to fully enjoy their visit.

September Weather in El Tesoro: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in El Tesoro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In El Tesoro, September typically has an average temperature of 27°C (82°F), with highs reaching up to 37°C (99°F) and lows dropping to around 21°C (70°F).

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

September Precipitation in El Tesoro

In El Tesoro in September, the precipitation amount is 318 mm (12.5 in), occurring over the course of 25 days.

September Precipitation Trends in El Tesoro

The chart displays monthly precipitation patterns in El Tesoro, 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 El Tesoro, September typically receives around 318 mm (12.5 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 El Tesoro

In El Tesoro in September humidity is 86%. With an average temperature of 27°C (82°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities a challenge and necessitating frequent breaks to stay hydrated while traveling.

September Average Humidity in El Tesoro

This chart illustrates the average monthly humidity levels in El Tesoro, 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 El Tesoro is approximately 86%, 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 El Tesoro

In El Tesoro 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 El Tesoro.

Maximum UV Index Levels in El Tesoro for September

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

Data source: El Tesoro 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 El Tesoro Compares to Other Months

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

This table compares monthly weather conditions in El Tesoro, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (72°F)	52 mm (2.0 inches)	88%	very high
February Weather	24°C (75°F)	44 mm (1.7 inches)	86%	extreme
March Weather	25°C (78°F)	26 mm (1.0 inches)	84%	extreme
April Weather	28°C (83°F)	34 mm (1.3 inches)	81%	extreme
May Weather	30°C (86°F)	64 mm (2.5 inches)	82%	extreme
June Weather	28°C (83°F)	270 mm (10.6 inches)	81%	extreme
July Weather	28°C (82°F)	224 mm (8.8 inches)	81%	extreme
August Weather	28°C (82°F)	259 mm (10.2 inches)	82%	extreme
September Weather	27°C (82°F)	318 mm (12.5 inches)	86%	extreme
October Weather	26°C (80°F)	284 mm (11.2 inches)	90%	extreme
November Weather	24°C (75°F)	133 mm (5.2 inches)	91%	very high
December Weather	23°C (73°F)	47 mm (1.8 inches)	91%	very high