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December Weather in Union Buenavista, Mexico

Last updated: August 27, 2025

In Union Buenavista, Mexico, the average temperature in December reaches a pleasant 20°C (69°F). Expect a minimum of 11°C (51°F) and a maximum of 30°C (87°F) throughout the month. With an average humidity of 75%, it's advisable to stay hydrated. Rainfall is modest, with an average precipitation of 11 mm (0.4 in) spread over just 2 days. Enjoy the mild climate!

December Temperature in Union Buenavista

In December, in Union Buenavista, the average temperature is 20°C (69°F). Maximum temperatures can reach 30°C (87°F), while minimums can drop to as low as 11°C (51°F). This mild climate makes Union Buenavista an ideal destination for travelers seeking comfortable weather for outdoor activities.

December Weather in Union Buenavista: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Union Buenavista, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Union Buenavista, December typically has an average temperature of 20°C (69°F), with highs reaching up to 30°C (87°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec687173757573737372727069
Data source: Temperature data for Union Buenavista 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 Union Buenavista

In Union Buenavista in December, the precipitation amount is 11 mm (0.4 in) over the course of 2 days.

December Precipitation Trends in Union Buenavista

The chart displays monthly precipitation patterns in Union Buenavista, 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 Union Buenavista, December typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec757371783591562643132093511
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Union Buenavista

In Union Buenavista in December, humidity is 75%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making travel a bit muggy and requiring frequent hydration breaks to stay comfortable while exploring.

December Average Humidity in Union Buenavista

This chart illustrates the average monthly humidity levels in Union Buenavista, 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 Union Buenavista is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%68%64%67%74%78%82%82%80%81%80%75%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Union Buenavista

In Union Buenavista in December, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Union Buenavista.

Maximum UV Index Levels in Union Buenavista for December

The chart shows the monthly maximum UV Index (UVI) for Union Buenavista 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 Union Buenavista typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11131415141415141413119
Data source: Union Buenavista 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 Union Buenavista Compares to Other Months

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

This table compares monthly weather conditions in Union Buenavista, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (69°F)7 mm (0.3 inches)70%extreme
February Weather21°C (71°F)5 mm (0.2 inches)68%extreme
March Weather23°C (73°F)7 mm (0.3 inches)64%extreme
April Weather24°C (76°F)37 mm (1.4 inches)67%extreme
May Weather24°C (76°F)178 mm (7.0 inches)74%extreme
June Weather23°C (73°F)359 mm (14.1 inches)78%extreme
July Weather23°C (74°F)156 mm (6.2 inches)81%extreme
August Weather23°C (73°F)264 mm (10.4 inches)82%extreme
September Weather22°C (73°F)313 mm (12.3 inches)80%extreme
October Weather22°C (72°F)209 mm (8.2 inches)81%extreme
November Weather21°C (70°F)35 mm (1.4 inches)80%extreme
December Weather20°C (69°F)11 mm (0.4 inches)75%very high

Compare Union Buenavista's Climate with Cities Worldwide