December Weather in Union y Progreso, Mexico

Last updated: August 27, 2025

In December, the average temperature in Union y Progreso, Mexico hovers around 15°C (59°F), with a minimum dipping to 2°C (36°F) and a maximum soaring up to 27°C (81°F). Expect 81 mm (3.2 in) of precipitation over approximately 14 days, coupled with a high average humidity of 91%, creating a rather damp atmosphere.

December Temperature in Union y Progreso

In December in Union y Progreso, the average temperature is 15°C (59°F). Maximum temperatures can reach 27°C (81°F), while the minimum can be as low as 2°C (36°F). This climate makes Union y Progreso a great destination for travelers seeking mild and varied weather.

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

The chart illustrates December temperature patterns in Union y Progreso, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Union y Progreso, December typically has an average temperature of 15°C (59°F), with highs reaching up to 27°C (81°F) and lows dropping to around 2°C (36°F).

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

December Precipitation in Union y Progreso

In Union y Progreso in December, the precipitation amount is 81 mm (3.2 in) over a span of 14 days.

December Precipitation Trends in Union y Progreso

The chart displays monthly precipitation patterns in Union y Progreso, 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 y Progreso, December typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 14 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Union y Progreso

In Union y Progreso in December humidity is 91%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making it difficult to enjoy outdoor activities and fostering a sense of lethargy that lingers throughout the day.

December Average Humidity in Union y Progreso

This chart illustrates the average monthly humidity levels in Union y Progreso, 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 y Progreso is approximately 91%, offering insight into how humid the weather typically is during this month.

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

December UV Index in Union y Progreso

In Union y Progreso 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 y Progreso.

Maximum UV Index Levels in Union y Progreso for December

The chart shows the monthly maximum UV Index (UVI) for Union y Progreso 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 y Progreso typically reaches 9, which falls under the very high exposure category.

Data source: Union y Progreso 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 y Progreso Compares to Other Months

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

This table compares monthly weather conditions in Union y Progreso, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	14°C (58°F)	110 mm (4.3 inches)	88%	very high
February Weather	16°C (61°F)	87 mm (3.4 inches)	86%	extreme
March Weather	17°C (63°F)	129 mm (5.1 inches)	84%	extreme
April Weather	19°C (67°F)	159 mm (6.3 inches)	81%	extreme
May Weather	20°C (69°F)	241 mm (9.5 inches)	82%	extreme
June Weather	20°C (68°F)	268 mm (10.6 inches)	81%	extreme
July Weather	19°C (67°F)	141 mm (5.5 inches)	81%	extreme
August Weather	20°C (68°F)	162 mm (6.4 inches)	82%	extreme
September Weather	20°C (68°F)	247 mm (9.7 inches)	86%	extreme
October Weather	19°C (66°F)	200 mm (7.9 inches)	90%	extreme
November Weather	16°C (62°F)	145 mm (5.7 inches)	91%	very high
December Weather	15°C (59°F)	81 mm (3.2 inches)	91%	very high