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September Weather in San Juan Epatlan, Mexico

Last updated: August 26, 2025

In September, the average temperature in San Juan Epatlan, Mexico is a pleasant 21°C (70°F), with lows dipping to 13°C (56°F) and highs reaching up to 30°C (86°F). Expect about 290 mm (11.4 in) of precipitation spread over 24 days, contributing to an average humidity of 82%.

September Temperature in San Juan Epatlan

In September in San Juan Epatlan, the average temperature is 21°C (70°F). Maximums can reach 30°C (86°F), while minimums can drop to as low as 13°C (56°F). This mild and pleasant climate makes it a great time for travelers to explore the sights and enjoy outdoor activities.

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

The chart illustrates September temperature patterns in San Juan Epatlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan Epatlan, September typically has an average temperature of 21°C (70°F), with highs reaching up to 30°C (86°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec646872747572717170706765
Data source: Temperature data for San Juan Epatlan 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 San Juan Epatlan

In San Juan Epatlan in September, the precipitation amount is 290 mm (11.4 in) over a span of 24 days.

September Precipitation Trends in San Juan Epatlan

The chart displays monthly precipitation patterns in San Juan Epatlan, 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 Juan Epatlan, September typically receives around 290 mm (11.4 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec2361883201153216290108243
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Juan Epatlan

In San Juan Epatlan in September, humidity is 82%. With an average temperature of 21°C (70°F), this humidity feels like a warm, sticky embrace that can quickly lead to discomfort for travelers, making outdoor activities less enjoyable and requiring frequent breaks for hydration.

September Average Humidity in San Juan Epatlan

This chart illustrates the average monthly humidity levels in San Juan Epatlan, 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 Juan Epatlan is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%78%75%71%77%76%68%70%82%91%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Juan Epatlan

In San Juan Epatlan 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 San Juan Epatlan, you can check here.

Maximum UV Index Levels in San Juan Epatlan for September

The chart shows the monthly maximum UV Index (UVI) for San Juan Epatlan 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 Juan Epatlan typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141414141412109
Data source: San Juan Epatlan 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 Juan Epatlan Compares to Other Months

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

This table compares monthly weather conditions in San Juan Epatlan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)2 mm (0.1 inches)84%very high
February Weather20°C (68°F)3 mm (0.1 inches)78%extreme
March Weather22°C (72°F)6 mm (0.2 inches)75%extreme
April Weather23°C (74°F)18 mm (0.7 inches)70%extreme
May Weather24°C (75°F)83 mm (3.3 inches)77%extreme
June Weather22°C (72°F)201 mm (7.9 inches)76%extreme
July Weather22°C (71°F)153 mm (6.0 inches)68%extreme
August Weather22°C (71°F)216 mm (8.5 inches)70%extreme
September Weather21°C (70°F)290 mm (11.4 inches)82%extreme
October Weather21°C (70°F)108 mm (4.2 inches)91%extreme
November Weather20°C (68°F)24 mm (1.0 inches)89%very high
December Weather18°C (65°F)3 mm (0.1 inches)88%very high

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