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September Weather in San Roman, Mexico

Last updated: August 26, 2025

In September, the average temperature in San Roman, Mexico is a pleasant 28°C (82°F), with temperatures dipping to a minimum of 22°C (72°F) and reaching up to 37°C (98°F). Expect 156 mm (6.1 in) of precipitation spread over about 25 days, creating a humid atmosphere with an average humidity of 85%. Prepare for a warm, wet month!

September Temperature in San Roman

In September in San Roman, the average temperature is 28°C (82°F), with maximums reaching up to 37°C (98°F) and minimums dropping as low as 22°C (72°F). This pleasant climate makes San Roman an ideal destination for travelers looking to enjoy warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in San Roman, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Roman, September typically has an average temperature of 28°C (82°F), with highs reaching up to 37°C (98°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec747779828482838382807775
Data source: Temperature data for San Roman 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 Roman

In San Roman in September, the precipitation amount is 156 mm (6.1 in) spread over the course of 25 days.

September Precipitation Trends in San Roman

The chart displays monthly precipitation patterns in San Roman, 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 Roman, September typically receives around 156 mm (6.1 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec3820193066221811101561646643
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Roman

In San Roman in September humidity is 85%. With an average temperature of 28°C (82°F), this humidity feels like a warm blanket enveloping you, making outdoor activities a sweaty endeavor and requiring frequent breaks to stay refreshed.

September Average Humidity in San Roman

This chart illustrates the average monthly humidity levels in San Roman, 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 Roman is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%80%69%64%63%62%65%78%86%87%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Roman

In San Roman in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in San Roman.

Maximum UV Index Levels in San Roman for September

The chart shows the monthly maximum UV Index (UVI) for San Roman 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 Roman typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131413131313121198
Data source: San Roman 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 Roman Compares to Other Months

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

This table compares monthly weather conditions in San Roman, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)38 mm (1.5 inches)85%very high
February Weather25°C (78°F)20 mm (0.8 inches)80%extreme
March Weather26°C (80°F)19 mm (0.8 inches)69%extreme
April Weather28°C (83°F)30 mm (1.2 inches)64%extreme
May Weather29°C (84°F)66 mm (2.6 inches)63%extreme
June Weather28°C (82°F)221 mm (8.7 inches)62%extreme
July Weather28°C (83°F)81 mm (3.2 inches)65%extreme
August Weather28°C (83°F)110 mm (4.3 inches)78%extreme
September Weather28°C (82°F)156 mm (6.1 inches)85%extreme
October Weather27°C (80°F)164 mm (6.5 inches)87%extreme
November Weather25°C (77°F)66 mm (2.6 inches)88%very high
December Weather24°C (75°F)43 mm (1.7 inches)88%very high

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