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September Weather in Tonalapa, Mexico

Last updated: August 27, 2025

In Tonalapa, Mexico, the average temperature in September hovers around 15°C (60°F), with a minimum of 4°C (40°F) and a maximum soaring to 24°C (75°F). Expect a fair amount of rainfall, with 256 mm (10.1 in) spread across 27 days, contributing to an average humidity of 82%. Be prepared for a cozy yet wet experience!

September Temperature in Tonalapa

In September in Tonalapa, the average temperature is 15°C (60°F). Maximums can reach 24°C (75°F) and minimums can be as low as 4°C (40°F). This moderate climate makes Tonalapa an ideal destination for travelers seeking comfortable weather for outdoor activities.

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

The chart illustrates September temperature patterns in Tonalapa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tonalapa, September typically has an average temperature of 15°C (60°F), with highs reaching up to 24°C (75°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec515557606261596059585452
Data source: Temperature data for Tonalapa 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 Tonalapa

In Tonalapa in September, the total precipitation amount is 256 mm (10.1 in) spread over 27 days.

September Precipitation Trends in Tonalapa

The chart displays monthly precipitation patterns in Tonalapa, 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 Tonalapa, September typically receives around 256 mm (10.1 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec352548761082131852492561635214
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tonalapa

In Tonalapa in September humidity is 82%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and draining, which can hinder your travel experience.

September Average Humidity in Tonalapa

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

In Tonalapa 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 Tonalapa, you can check here.

Maximum UV Index Levels in Tonalapa for September

The chart shows the monthly maximum UV Index (UVI) for Tonalapa 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 Tonalapa typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121415151515141413109
Data source: Tonalapa 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 Tonalapa Compares to Other Months

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

This table compares monthly weather conditions in Tonalapa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (51°F)35 mm (1.4 inches)84%very high
February Weather13°C (55°F)25 mm (1.0 inches)78%extreme
March Weather14°C (58°F)48 mm (1.9 inches)75%extreme
April Weather16°C (60°F)76 mm (3.0 inches)70%extreme
May Weather17°C (62°F)108 mm (4.2 inches)77%extreme
June Weather16°C (61°F)213 mm (8.4 inches)76%extreme
July Weather15°C (60°F)185 mm (7.3 inches)68%extreme
August Weather15°C (60°F)249 mm (9.8 inches)70%extreme
September Weather15°C (60°F)256 mm (10.1 inches)82%extreme
October Weather14°C (58°F)163 mm (6.4 inches)91%extreme
November Weather12°C (54°F)52 mm (2.0 inches)89%very high
December Weather11°C (52°F)14 mm (0.6 inches)88%very high

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