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December Weather in Reynosa, Mexico

Last updated: August 27, 2025

The average temperature in Reynosa, Mexico during December is a comfortable 18°C (65°F). Expect a minimum of 1°C (35°F) and a maximum of 34°C (94°F) throughout the month. With an average precipitation of 19 mm (0.8 in) spread across 4 days, you'll want to be prepared for a bit of rain. Additionally, the average humidity sits at a sticky 86%, so be sure to stay hydrated!

December Temperature in Reynosa

In December in Reynosa, the average temperature is 18°C (65°F). Maximums can reach 34°C (94°F), while minimums can dip as low as 1°C (35°F). This variety in temperatures makes it essential for travelers to pack layers to stay comfortable throughout their visit.

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

The chart illustrates December 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, December typically has an average temperature of 18°C (65°F), with highs reaching up to 34°C (94°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec626572778285868783776964
Data source: Temperature data for Reynosa 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.

December Precipitation in Reynosa

In Reynosa in December, the precipitation amount is 19 mm (0.8 in) over a span of 4 days.

December Precipitation Trends in Reynosa

The chart displays monthly precipitation patterns in Reynosa, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Reynosa, December typically receives around 19 mm (0.8 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec192233317582992194503219
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Reynosa

In Reynosa in December humidity is 86%. With an average temperature of 18°C (65°F), this humidity feels like you’re wrapped in a warm, heavy blanket, making outdoor activities feel quite muggy and sticky for traveling.

December Average Humidity in Reynosa

This chart illustrates the average monthly humidity levels in Reynosa, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Reynosa is approximately 86%, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Reynosa

In Reynosa in December, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Reynosa, you can refer to this Hourly UV Index in Reynosa.

Maximum UV Index Levels in Reynosa for December

The chart shows the monthly maximum UV Index (UVI) for Reynosa in December, 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 December, the maximum UV index in Reynosa typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6910121212121211976
Data source: Reynosa December 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 December 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 December’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 December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (62°F)19 mm (0.7 inches)84%high
February Weather18°C (65°F)22 mm (0.9 inches)83%very high
March Weather22°C (72°F)33 mm (1.3 inches)78%very high
April Weather25°C (78°F)31 mm (1.2 inches)81%extreme
May Weather28°C (83°F)75 mm (3.0 inches)82%extreme
June Weather30°C (85°F)82 mm (3.2 inches)74%extreme
July Weather30°C (86°F)99 mm (3.9 inches)68%extreme
August Weather31°C (88°F)21 mm (0.8 inches)67%extreme
September Weather29°C (84°F)94 mm (3.7 inches)75%extreme
October Weather25°C (77°F)50 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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