September Weather in Reynosa, Mexico

Last updated: August 27, 2025

In September, the average temperature in Reynosa, Mexico hovers around 29°C (84°F), providing a warm climate. Expect variations, with minimum temperatures dipping to 17°C (64°F) and maximums soaring to 40°C (104°F). Be prepared for some rain, as precipitation totals 94 mm (3.7 in) over approximately 12 days, while the average humidity remains high at 75%.

September Temperature in Reynosa

In September in Reynosa, the average temperature is 29°C (84°F), with maximums reaching 40°C (104°F) and minimums dropping to as low as 17°C (64°F). This makes it an ideal time for travelers who enjoy warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in Reynosa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Reynosa, September typically has an average temperature of 29°C (84°F), with highs reaching up to 40°C (104°F) and lows dropping to around 17°C (64°F).

Data source: Temperature data for Reynosa generated using information from the Copernicus Climate Change Service.

September Precipitation in Reynosa

In Reynosa in September, the precipitation amount is 94 mm (3.7 in) spread over 12 days.

September Precipitation Trends in Reynosa

The chart displays monthly precipitation patterns in Reynosa, 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 Reynosa, September typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Reynosa

In Reynosa in September, humidity is 75%. With an average temperature of 29°C (84°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities quite sweaty and challenging for traveling.

September Average Humidity in Reynosa

This chart illustrates the average monthly humidity levels in Reynosa, 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 Reynosa is approximately 75%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Reynosa

In Reynosa 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 Reynosa.

Maximum UV Index Levels in Reynosa for September

The chart shows the monthly maximum UV Index (UVI) for Reynosa 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 Reynosa typically reaches 11, which falls under the extreme exposure category.

Data source: Reynosa 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 Reynosa Compares to Other Months

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

This table compares monthly weather conditions in Reynosa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	17°C (62°F)	19 mm (0.7 inches)	84%	high
February Weather	18°C (65°F)	22 mm (0.9 inches)	83%	very high
March Weather	22°C (72°F)	33 mm (1.3 inches)	78%	very high
April Weather	25°C (78°F)	31 mm (1.2 inches)	81%	extreme
May Weather	28°C (83°F)	75 mm (3.0 inches)	82%	extreme
June Weather	30°C (85°F)	82 mm (3.2 inches)	74%	extreme
July Weather	30°C (86°F)	99 mm (3.9 inches)	68%	extreme
August Weather	31°C (88°F)	21 mm (0.8 inches)	67%	extreme
September Weather	29°C (84°F)	94 mm (3.7 inches)	75%	extreme
October Weather	25°C (77°F)	50 mm (2.0 inches)	78%	very high
November Weather	21°C (69°F)	32 mm (1.2 inches)	83%	high
December Weather	18°C (65°F)	19 mm (0.8 inches)	86%	high