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September Weather in Copalillo, Mexico

Last updated: August 27, 2025

In September, the average temperature in Copalillo, Mexico is a pleasant 24°C (76°F). Expect a range with minimums dipping to 18°C (65°F) and maximums reaching up to 33°C (92°F). Prepare for some rain, as 179 mm (7.1 in) of precipitation is expected over 23 days, contributing to the average humidity of a steamy 82%.

September Temperature in Copalillo

In September in Copalillo, the average temperature is 24°C (76°F). The maximum can reach 33°C (92°F), and the minimum can be as low as 18°C (65°F). It's the perfect time for travelers to enjoy pleasant weather while exploring all that Copalillo has to offer.

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

The chart illustrates September temperature patterns in Copalillo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Copalillo, September typically has an average temperature of 24°C (76°F), with highs reaching up to 33°C (92°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec737579818278777776767573
Data source: Temperature data for Copalillo 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 Copalillo

In Copalillo in September, the precipitation amount is 179 mm (7.1 in) spread over 23 days.

September Precipitation Trends in Copalillo

The chart displays monthly precipitation patterns in Copalillo, 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 Copalillo, September typically receives around 179 mm (7.1 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec1316371381071551798092
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Copalillo

In Copalillo in September, humidity is 82%. With an average temperature of 24°C (76°F), this humidity feels like wearing a warm, damp blanket, making travel uncomfortable and sticky as you explore.

September Average Humidity in Copalillo

This chart illustrates the average monthly humidity levels in Copalillo, 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 Copalillo is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%61%59%62%73%78%79%82%82%79%72%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Copalillo

In Copalillo 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 Copalillo, you can check here.

Maximum UV Index Levels in Copalillo for September

The chart shows the monthly maximum UV Index (UVI) for Copalillo 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 Copalillo typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1011141414141413141298
Data source: Copalillo 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 Copalillo Compares to Other Months

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

This table compares monthly weather conditions in Copalillo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (73°F)1 mm (0.0 inches)65%very high
February Weather24°C (76°F)3 mm (0.1 inches)61%extreme
March Weather26°C (79°F)1 mm (0.0 inches)59%extreme
April Weather27°C (82°F)6 mm (0.2 inches)62%extreme
May Weather28°C (82°F)37 mm (1.5 inches)73%extreme
June Weather25°C (78°F)138 mm (5.4 inches)78%extreme
July Weather25°C (78°F)107 mm (4.2 inches)79%extreme
August Weather25°C (77°F)155 mm (6.1 inches)82%extreme
September Weather24°C (76°F)179 mm (7.1 inches)82%extreme
October Weather25°C (77°F)80 mm (3.1 inches)79%extreme
November Weather24°C (76°F)9 mm (0.3 inches)72%very high
December Weather23°C (73°F)1 mm (0.1 inches)70%very high

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