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December Weather in San Antonio de los Rios, Mexico

Last updated: August 27, 2025

In San Antonio de los Rios, Mexico, the average temperature in December hovers around 11°C (53°F), with a minimum of -6°C (21°F) and a maximum reaching up to 25°C (77°F). During this time, expect 18 mm (0.7 in) of precipitation over about 2 days, coupled with an average humidity of 83%.

December Temperature in San Antonio de los Rios

In December in San Antonio de los Rios, the average temperature is 11°C (53°F). The maximum can reach 25°C (77°F), while the minimum can be as low as -6°C (21°F). This wide temperature range means that travelers should be prepared for both mild and chilly conditions, making layering essential for a comfortable visit.

December Weather in San Antonio de los Rios: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Antonio de los Rios, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Antonio de los Rios, December typically has an average temperature of 11°C (53°F), with highs reaching up to 25°C (77°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec525662646766636462605653
Data source: Temperature data for San Antonio de los Rios 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 San Antonio de los Rios

In San Antonio de los Rios in December, the precipitation amount is 18 mm (0.7 in) over the course of 2 days.

December Precipitation Trends in San Antonio de los Rios

The chart displays monthly precipitation patterns in San Antonio de los Rios, 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 San Antonio de los Rios, December typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec211481047222267166260841918
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Antonio de los Rios

In San Antonio de los Rios in December, humidity is 83%. With an average temperature of 11°C (53°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and causing an inevitable sheen of sweat to form, which can dampen the joy of exploring your surroundings.

December Average Humidity in San Antonio de los Rios

This chart illustrates the average monthly humidity levels in San Antonio de los Rios, 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 San Antonio de los Rios is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%64%49%47%55%77%82%83%86%83%80%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Antonio de los Rios

In San Antonio de los Rios in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in San Antonio de los Rios.

Maximum UV Index Levels in San Antonio de los Rios for December

The chart shows the monthly maximum UV Index (UVI) for San Antonio de los Rios 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 San Antonio de los Rios typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9111415151414141412108
Data source: San Antonio de los Rios 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 San Antonio de los Rios Compares to Other Months

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

This table compares monthly weather conditions in San Antonio de los Rios, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)21 mm (0.8 inches)71%very high
February Weather13°C (57°F)14 mm (0.6 inches)64%extreme
March Weather16°C (62°F)8 mm (0.3 inches)49%extreme
April Weather18°C (65°F)10 mm (0.4 inches)47%extreme
May Weather20°C (68°F)47 mm (1.9 inches)55%extreme
June Weather19°C (67°F)222 mm (8.7 inches)77%extreme
July Weather17°C (64°F)267 mm (10.5 inches)82%extreme
August Weather18°C (64°F)166 mm (6.5 inches)83%extreme
September Weather17°C (62°F)260 mm (10.3 inches)86%extreme
October Weather16°C (60°F)84 mm (3.3 inches)83%extreme
November Weather13°C (56°F)19 mm (0.8 inches)80%very high
December Weather11°C (53°F)18 mm (0.7 inches)83%very high

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