September Weather in Atongo, Mexico

Last updated: August 27, 2025

In Atongo, Mexico, the average temperature in September hovers around 19°C (66°F), making it a pleasant time to visit. Expect to experience a minimum of 10°C (50°F) and a maximum of 29°C (85°F) throughout the month. However, be prepared for some rain, as 158 mm (6.2 in) of precipitation is expected over 17 days. With an average humidity of 81%, you'll definitely want to stay hydrated while enjoying your adventures!

September Temperature in Atongo

In September in Atongo, the average temperature is 19°C (66°F). The maximum can reach 29°C (85°F) and the minimum can be as low as 10°C (50°F). This pleasant climate makes Atongo an ideal destination for travelers seeking a comfortable getaway.

September Weather in Atongo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Atongo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Atongo, September typically has an average temperature of 19°C (66°F), with highs reaching up to 29°C (85°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Atongo

In Atongo in September, the total precipitation amount is 158 mm (6.2 in), occurring over the course of 17 days.

September Precipitation Trends in Atongo

The chart displays monthly precipitation patterns in Atongo, 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 Atongo, September typically receives around 158 mm (6.2 inches) of precipitation spread over approximately 17 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 Atongo

In Atongo in September, humidity is 81%. With an average temperature of 19°C (66°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel both muggy and slightly stifling, often leading to a need for frequent breaks in the shade.

September Average Humidity in Atongo

This chart illustrates the average monthly humidity levels in Atongo, 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 Atongo 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 Atongo

In Atongo in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Atongo, you can check here.

Maximum UV Index Levels in Atongo for September

The chart shows the monthly maximum UV Index (UVI) for Atongo 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 Atongo typically reaches 14, which falls under the extreme exposure category.

Data source: Atongo 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 Atongo Compares to Other Months

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

This table compares monthly weather conditions in Atongo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	14°C (58°F)	5 mm (0.2 inches)	74%	very high
February Weather	16°C (62°F)	7 mm (0.3 inches)	65%	extreme
March Weather	19°C (66°F)	15 mm (0.6 inches)	58%	extreme
April Weather	21°C (70°F)	19 mm (0.7 inches)	58%	extreme
May Weather	22°C (71°F)	55 mm (2.2 inches)	67%	extreme
June Weather	20°C (69°F)	160 mm (6.3 inches)	76%	extreme
July Weather	19°C (67°F)	113 mm (4.5 inches)	67%	extreme
August Weather	20°C (68°F)	98 mm (3.9 inches)	68%	extreme
September Weather	19°C (66°F)	158 mm (6.2 inches)	81%	extreme
October Weather	18°C (64°F)	60 mm (2.4 inches)	83%	extreme
November Weather	16°C (60°F)	20 mm (0.8 inches)	84%	very high
December Weather	14°C (58°F)	5 mm (0.2 inches)	81%	very high