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September Weather in Rio Seco, Mexico

Last updated: August 27, 2025

In September, the average temperature in Rio Seco, Mexico hovers around 25°C (77°F), with highs reaching up to 30°C (87°F) and lows dipping to 22°C (72°F). Expect a fair amount of precipitation, averaging 283 mm (11.1 in) over approximately 24 days, contributing to a rather humid atmosphere with an average humidity of 77%.

September Temperature in Rio Seco

In September in Rio Seco, the average temperature is 25°C (77°F). Maximums can reach 30°C (87°F), while minimums can drop to as low as 22°C (72°F). This pleasant climate makes Rio Seco an inviting destination for travelers seeking warmth and comfort.

September Weather in Rio Seco: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rio Seco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Seco, September typically has an average temperature of 25°C (77°F), with highs reaching up to 30°C (87°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec747577777877787777777675
Data source: Temperature data for Rio Seco 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 Rio Seco

In Rio Seco in September, the total precipitation amount is 283 mm (11.1 in) occurring over a span of 24 days.

September Precipitation Trends in Rio Seco

The chart displays monthly precipitation patterns in Rio Seco, 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 Rio Seco, September typically receives around 283 mm (11.1 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec811942157409173290283180155
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rio Seco

In Rio Seco in September, humidity is 77%. With an average temperature of 25°C (77°F), this humidity feels like a warm blanket wrapping around you, making travel feel slightly heavy but still pleasant, as long as you stay hydrated and take frequent breaks in the shade.

September Average Humidity in Rio Seco

This chart illustrates the average monthly humidity levels in Rio Seco, 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 Rio Seco is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec67%66%63%66%71%74%78%78%77%77%75%72%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rio Seco

In Rio Seco 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 Rio Seco.

Maximum UV Index Levels in Rio Seco for September

The chart shows the monthly maximum UV Index (UVI) for Rio Seco 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 Rio Seco typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121314141314131312109
Data source: Rio Seco 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 Rio Seco Compares to Other Months

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

This table compares monthly weather conditions in Rio Seco, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)8 mm (0.3 inches)67%very high
February Weather24°C (75°F)11 mm (0.4 inches)66%extreme
March Weather25°C (77°F)9 mm (0.3 inches)63%extreme
April Weather25°C (78°F)42 mm (1.7 inches)66%extreme
May Weather26°C (78°F)156 mm (6.2 inches)71%extreme
June Weather25°C (77°F)408 mm (16.1 inches)73%extreme
July Weather26°C (79°F)173 mm (6.8 inches)78%extreme
August Weather25°C (78°F)290 mm (11.4 inches)78%extreme
September Weather25°C (77°F)283 mm (11.1 inches)77%extreme
October Weather25°C (77°F)180 mm (7.1 inches)77%extreme
November Weather25°C (77°F)15 mm (0.6 inches)75%very high
December Weather24°C (75°F)5 mm (0.2 inches)72%very high

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