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September Weather in Cosoltepec, Mexico

Last updated: August 27, 2025

In September, the average temperature in Cosoltepec, Mexico hovers around 21°C (69°F). The climate can vary with a minimum of 12°C (54°F) and a maximum reaching up to 31°C (88°F). Expect 196 mm (7.7 in) of precipitation over approximately 19 days, accompanied by a notable average humidity of 82%.

September Temperature in Cosoltepec

In September in Cosoltepec, the average temperature is 21°C (69°F). Maximums can reach 31°C (88°F), while minimums can drop to as low as 12°C (54°F). This makes Cosoltepec an ideal destination for travelers seeking a pleasant and varied climate.

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

The chart illustrates September temperature patterns in Cosoltepec, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cosoltepec, September typically has an average temperature of 21°C (69°F), with highs reaching up to 31°C (88°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec636669727370707069686663
Data source: Temperature data for Cosoltepec 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 Cosoltepec

In Cosoltepec in September, the precipitation amount is 196 mm (7.7 in) over the course of 19 days.

September Precipitation Trends in Cosoltepec

The chart displays monthly precipitation patterns in Cosoltepec, 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 Cosoltepec, September typically receives around 196 mm (7.7 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec22725731701021371966191
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cosoltepec

In Cosoltepec in September humidity is 82%. With an average temperature of 21°C (69°F), this humidity feels like a sweltering embrace, making outdoor activities feel more strenuous and prompting travelers to seek shade and cooling breezes.

September Average Humidity in Cosoltepec

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

In Cosoltepec 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 Cosoltepec, you can check here.

Maximum UV Index Levels in Cosoltepec for September

The chart shows the monthly maximum UV Index (UVI) for Cosoltepec 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 Cosoltepec typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121415151515141412109
Data source: Cosoltepec 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 Cosoltepec Compares to Other Months

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

This table compares monthly weather conditions in Cosoltepec, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)2 mm (0.1 inches)84%very high
February Weather19°C (66°F)2 mm (0.1 inches)78%extreme
March Weather21°C (69°F)7 mm (0.3 inches)75%extreme
April Weather22°C (73°F)25 mm (1.0 inches)70%extreme
May Weather23°C (73°F)72 mm (2.9 inches)77%extreme
June Weather21°C (70°F)170 mm (6.7 inches)76%extreme
July Weather21°C (70°F)102 mm (4.0 inches)68%extreme
August Weather21°C (71°F)137 mm (5.4 inches)70%extreme
September Weather21°C (69°F)196 mm (7.7 inches)82%extreme
October Weather20°C (69°F)61 mm (2.4 inches)91%extreme
November Weather19°C (66°F)9 mm (0.3 inches)89%very high
December Weather17°C (64°F)1 mm (0.0 inches)88%very high

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