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September Weather in San Blas Atempa, Mexico

Last updated: August 27, 2025

In September, the average temperature in San Blas Atempa, Mexico is a warm 28°C (83°F), with lows dipping to 23°C (74°F) and highs soaring up to 37°C (99°F). During this time, expect precipitation of approximately 184 mm (7.3 in) spread over 18 days, and an average humidity level of 84%. Stay prepared for a mix of warmth and occasional showers!

September Temperature in San Blas Atempa

In September in San Blas Atempa, the average temperature is 28°C (83°F), where maximums can reach 37°C (99°F) and minimums can drop to 23°C (74°F). This warm climate makes it an ideal destination for travelers seeking a sunny getaway.

September Weather in San Blas Atempa: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Blas Atempa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Blas Atempa, September typically has an average temperature of 28°C (83°F), with highs reaching up to 37°C (99°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec777981838582858483828078
Data source: Temperature data for San Blas Atempa 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 Blas Atempa

In San Blas Atempa in September, the precipitation amount is 184 mm (7.3 in) over the course of 18 days.

September Precipitation Trends in San Blas Atempa

The chart displays monthly precipitation patterns in San Blas Atempa, 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 Blas Atempa, September typically receives around 184 mm (7.3 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec3528773078117818411076
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Blas Atempa

In San Blas Atempa in September, humidity is 84%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and the air almost stifling for traveling.

September Average Humidity in San Blas Atempa

This chart illustrates the average monthly humidity levels in San Blas Atempa, 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 Blas Atempa is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%80%73%67%72%73%76%80%84%89%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Blas Atempa

In San Blas Atempa in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Blas Atempa.

Maximum UV Index Levels in San Blas Atempa for September

The chart shows the monthly maximum UV Index (UVI) for San Blas Atempa 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 Blas Atempa typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121313141314131312109
Data source: San Blas Atempa 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 Blas Atempa Compares to Other Months

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

This table compares monthly weather conditions in San Blas Atempa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)2 mm (0.1 inches)84%very high
February Weather26°C (79°F)5 mm (0.2 inches)80%extreme
March Weather27°C (82°F)1 mm (0.1 inches)73%extreme
April Weather28°C (84°F)8 mm (0.3 inches)67%extreme
May Weather29°C (85°F)77 mm (3.0 inches)72%extreme
June Weather28°C (83°F)307 mm (12.1 inches)73%extreme
July Weather29°C (85°F)81 mm (3.2 inches)76%extreme
August Weather29°C (84°F)178 mm (7.0 inches)80%extreme
September Weather28°C (83°F)184 mm (7.3 inches)84%extreme
October Weather28°C (82°F)110 mm (4.3 inches)89%extreme
November Weather27°C (81°F)7 mm (0.3 inches)88%very high
December Weather26°C (78°F)6 mm (0.3 inches)88%very high

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