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September Weather in Santo Domingo del Rio, Mexico

Last updated: August 27, 2025

In Santo Domingo del Rio, Mexico during the month of September, the average temperature hovers around 25°C (77°F). Expect minimums of 20°C (68°F) and maximums reaching 33°C (91°F). However, be prepared for frequent rainfall, as precipitation can amount to 386 mm (15.2 in) over 25 days. With an average humidity of 84%, it's a time when the air feels quite sticky, so make sure to stay hydrated and enjoy the lush surroundings!

September Temperature in Santo Domingo del Rio

In September in Santo Domingo del Rio, the average temperature is 25°C (77°F). Maximums can reach 33°C (91°F) while minimums can be as low as 20°C (68°F). This comfortable climate makes Santo Domingo del Rio a delightful destination for travelers seeking warm weather during this time of year.

September Weather in Santo Domingo del Rio: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santo Domingo del Rio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Domingo del Rio, September typically has an average temperature of 25°C (77°F), with highs reaching up to 33°C (91°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec676972767877777776757068
Data source: Temperature data for Santo Domingo del Rio 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 Santo Domingo del Rio

In Santo Domingo del Rio in September, the total precipitation amount is 386 mm (15.2 in) over the course of 25 days.

September Precipitation Trends in Santo Domingo del Rio

The chart displays monthly precipitation patterns in Santo Domingo del Rio, 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 Santo Domingo del Rio, September typically receives around 386 mm (15.2 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec119113105101131368171261387346219104
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santo Domingo del Rio

In Santo Domingo del Rio in September, humidity is 84%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities challenging and prompting travelers to seek shade and stay hydrated.

September Average Humidity in Santo Domingo del Rio

This chart illustrates the average monthly humidity levels in Santo Domingo del Rio, 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 Santo Domingo del Rio 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 Santo Domingo del Rio

In Santo Domingo del Rio 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 Santo Domingo del Rio.

Maximum UV Index Levels in Santo Domingo del Rio for September

The chart shows the monthly maximum UV Index (UVI) for Santo Domingo del Rio 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 Santo Domingo del Rio typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911121313141413131298
Data source: Santo Domingo del Rio 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 Santo Domingo del Rio Compares to Other Months

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

This table compares monthly weather conditions in Santo Domingo del Rio, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather19°C (67°F)119 mm (4.7 inches)84%very high
February Weather21°C (69°F)113 mm (4.5 inches)80%extreme
March Weather22°C (72°F)105 mm (4.1 inches)73%extreme
April Weather24°C (76°F)101 mm (4.0 inches)67%extreme
May Weather26°C (78°F)131 mm (5.2 inches)72%extreme
June Weather25°C (77°F)368 mm (14.5 inches)73%extreme
July Weather25°C (77°F)171 mm (6.7 inches)76%extreme
August Weather25°C (77°F)261 mm (10.3 inches)80%extreme
September Weather25°C (77°F)386 mm (15.2 inches)84%extreme
October Weather24°C (75°F)346 mm (13.6 inches)89%extreme
November Weather21°C (70°F)219 mm (8.6 inches)88%very high
December Weather20°C (68°F)104 mm (4.1 inches)88%very high

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