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September Weather in Acatlan del Rio, Mexico

Last updated: August 27, 2025

In September, the average temperature in Acatlan del Rio, Mexico hovers around 24°C (75°F), providing a pleasant climate for outdoor activities. Expect a minimum of 18°C (65°F) and occasional peaks of 31°C (88°F). However, don't forget your umbrella, as this month sees about 296 mm (11.6 in) of precipitation spread over 25 days, contributing to an average humidity of 78%. Enjoy the warmth but be prepared for some rainy spells!

September Temperature in Acatlan del Rio

In September in Acatlan del Rio, the average temperature is 24°C (75°F). Maximum temperatures can reach 31°C (88°F) while minimums can drop to as low as 18°C (65°F). This pleasant climate makes it an ideal time for sightseeing and outdoor activities.

September Weather in Acatlan del Rio: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Acatlan del Rio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Acatlan del Rio, September typically has an average temperature of 24°C (75°F), with highs reaching up to 31°C (88°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec737679828278767575757372
Data source: Temperature data for Acatlan del Rio generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Acatlan del Rio

In Acatlan del Rio in September, the total precipitation amount is 296 mm (11.6 in) occurring over the course of 25 days.

September Precipitation Trends in Acatlan del Rio

The chart displays monthly precipitation patterns in Acatlan del Rio, 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 Acatlan del Rio, September typically receives around 296 mm (11.6 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec251128192216298296158213
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Acatlan del Rio

In Acatlan del Rio in September humidity is 78%. With an average temperature of 24°C (75°F), this humidity feels like a warm blanket wrapping around you, making travel sticky and heavy but also inviting, as long as you're prepared with plenty of water and light clothing.

September Average Humidity in Acatlan del Rio

This chart illustrates the average monthly humidity levels in Acatlan del Rio, 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 Acatlan del Rio is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%64%63%69%73%76%78%79%78%75%72%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Acatlan del Rio

In Acatlan del Rio 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 Acatlan del Rio, you can check here.

Maximum UV Index Levels in Acatlan del Rio for September

The chart shows the monthly maximum UV Index (UVI) for Acatlan del Rio 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 Acatlan del Rio typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1011141413141413141298
Data source: Acatlan del Rio 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 Acatlan del Rio Compares to Other Months

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

This table compares monthly weather conditions in Acatlan del Rio, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (73°F)2 mm (0.1 inches)66%very high
February Weather24°C (76°F)5 mm (0.2 inches)64%extreme
March Weather26°C (79°F)1 mm (0.1 inches)63%extreme
April Weather28°C (82°F)1 mm (0.1 inches)69%extreme
May Weather28°C (83°F)28 mm (1.1 inches)73%extreme
June Weather25°C (78°F)192 mm (7.6 inches)76%extreme
July Weather24°C (76°F)216 mm (8.5 inches)78%extreme
August Weather24°C (75°F)298 mm (11.7 inches)79%extreme
September Weather24°C (75°F)296 mm (11.6 inches)78%extreme
October Weather24°C (75°F)158 mm (6.2 inches)75%extreme
November Weather23°C (73°F)20 mm (0.8 inches)72%very high
December Weather22°C (72°F)3 mm (0.1 inches)70%very high

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