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September Weather in Petatlan, Mexico

Last updated: August 27, 2025

The average temperature in Petatlan, Mexico during September hovers around 26°C (80°F), with minimums reaching 23°C (73°F) and maximums soaring to 32°C (89°F). This month, you can expect precipitation totaling 296 mm (11.6 in) across approximately 22 days, accompanied by an average humidity of 78%. 🌧️🌞

September Temperature in Petatlan

In September in Petatlan, the average temperature is 26°C (80°F), with maximums reaching 32°C (89°F) and minimums dropping to as low as 23°C (73°F). This mild and warm weather makes it an ideal time for travelers to explore and enjoy the outdoor attractions in Petatlan.

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

The chart illustrates September temperature patterns in Petatlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Petatlan, September typically has an average temperature of 26°C (80°F), with highs reaching up to 32°C (89°F) and lows dropping to around 23°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec767677777980818079797876
Data source: Temperature data for Petatlan 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 Petatlan

In Petatlan, in September, the precipitation amount is 296 mm (11.6 in) over the course of 22 days.

September Precipitation Trends in Petatlan

The chart displays monthly precipitation patterns in Petatlan, 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 Petatlan, September typically receives around 296 mm (11.6 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec340018305144294296273407
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Petatlan

In Petatlan in September, humidity is 78%. With an average temperature of 26°C (80°F), this humidity feels like a warm blanket wrapping around you, making travel feel sticky and heavy, while the air clings to your skin and encourages frequent breaks in shaded spots to stay cool.

September Average Humidity in Petatlan

This chart illustrates the average monthly humidity levels in Petatlan, 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 Petatlan is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%64%63%69%73%76%78%79%78%75%72%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Petatlan

In Petatlan 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 Petatlan, you can check here.

Maximum UV Index Levels in Petatlan for September

The chart shows the monthly maximum UV Index (UVI) for Petatlan 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 Petatlan typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131413141413141198
Data source: Petatlan 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 Petatlan Compares to Other Months

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

This table compares monthly weather conditions in Petatlan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)3 mm (0.1 inches)66%very high
February Weather24°C (76°F)4 mm (0.1 inches)64%extreme
March Weather25°C (77°F)0 mm (0.0 inches)63%extreme
April Weather25°C (77°F)0 mm (0.0 inches)69%extreme
May Weather26°C (79°F)18 mm (0.7 inches)73%extreme
June Weather26°C (80°F)305 mm (12.0 inches)76%extreme
July Weather27°C (81°F)144 mm (5.7 inches)78%extreme
August Weather27°C (80°F)294 mm (11.6 inches)79%extreme
September Weather26°C (80°F)296 mm (11.6 inches)78%extreme
October Weather26°C (79°F)273 mm (10.7 inches)75%extreme
November Weather26°C (78°F)39 mm (1.6 inches)72%very high
December Weather25°C (77°F)7 mm (0.3 inches)70%very high

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