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September Weather in Ciudad Rio Bravo, Mexico

Last updated: August 27, 2025

In September, the average temperature in Ciudad Rio Bravo, Mexico is a warm 28°C (83°F). Expect temperatures to range from a comfortable 17°C (64°F) at their lowest to a scorching 39°C (102°F) at their peak. With 99 mm (3.9 in) of rainfall over 13 days, it’s wise to prepare for some wet weather. The average humidity sits at a humid 75%, making it essential to stay hydrated and plan accordingly for your visit!

September Temperature in Ciudad Rio Bravo

In September in Ciudad Rio Bravo, the average temperature is 28°C (83°F). The maximum can reach 39°C (102°F), while the minimum can be as low as 17°C (64°F). It's a perfect time for travelers to enjoy warm weather while also having the option to cool down in the evenings.

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

The chart illustrates September temperature patterns in Ciudad Rio Bravo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ciudad Rio Bravo, September typically has an average temperature of 28°C (83°F), with highs reaching up to 39°C (102°F) and lows dropping to around 17°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec626572778285868783776964
Data source: Temperature data for Ciudad Rio Bravo 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 Ciudad Rio Bravo

In Ciudad Rio Bravo in September, the precipitation amount is 99 mm (3.9 in) over the course of 13 days.

September Precipitation Trends in Ciudad Rio Bravo

The chart displays monthly precipitation patterns in Ciudad Rio Bravo, 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 Ciudad Rio Bravo, September typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec2223332777901022899513219
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ciudad Rio Bravo

In Ciudad Rio Bravo in September humidity is 75%. With an average temperature of 28°C (83°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel particularly heavy, and prompting frequent breaks in the shade to stay comfortable while traveling.

September Average Humidity in Ciudad Rio Bravo

This chart illustrates the average monthly humidity levels in Ciudad Rio Bravo, 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 Ciudad Rio Bravo is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%78%81%82%74%68%67%75%78%83%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ciudad Rio Bravo

In Ciudad Rio Bravo in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Ciudad Rio Bravo.

Maximum UV Index Levels in Ciudad Rio Bravo for September

The chart shows the monthly maximum UV Index (UVI) for Ciudad Rio Bravo 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 Ciudad Rio Bravo typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec69101112121212111076
Data source: Ciudad Rio Bravo 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 Ciudad Rio Bravo Compares to Other Months

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

This table compares monthly weather conditions in Ciudad Rio Bravo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (62°F)22 mm (0.9 inches)84%high
February Weather18°C (65°F)23 mm (0.9 inches)83%very high
March Weather22°C (72°F)33 mm (1.3 inches)78%very high
April Weather25°C (77°F)27 mm (1.1 inches)81%extreme
May Weather28°C (82°F)77 mm (3.0 inches)82%extreme
June Weather29°C (85°F)90 mm (3.6 inches)74%extreme
July Weather30°C (86°F)102 mm (4.0 inches)68%extreme
August Weather31°C (87°F)28 mm (1.1 inches)67%extreme
September Weather28°C (83°F)99 mm (3.9 inches)75%extreme
October Weather25°C (77°F)51 mm (2.0 inches)78%very high
November Weather21°C (69°F)32 mm (1.2 inches)83%high
December Weather18°C (65°F)19 mm (0.8 inches)86%high

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