December Weather in Union y Progreso, Mexico

Last updated: August 27, 2025

In December, the average temperature in Union y Progreso, Mexico reaches a pleasant 21°C (70°F). Expect a comfortable range, with minimum temperatures dipping to 9°C (49°F) and highs soaring to 31°C (88°F). Rainfall is minimal, with an average precipitation of just 12 mm (0.5 in) over the course of 1 day. However, be prepared for a touch of humidity, as the average hovers around 88%.

December Temperature in Union y Progreso

In December in Union y Progreso, the average temperature is a comfortable 21°C (70°F), making it an ideal time for outdoor activities. Maximum temperatures can reach up to 31°C (88°F), while lows can dip as low as 9°C (49°F), so packing layers would be wise for your travels. Enjoy the pleasant climate and explore everything Union y Progreso has to offer!

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 21°C (70°F), with highs reaching up to 31°C (88°F) and lows dropping to around 9°C (49°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 12 mm (0.5 in) over the course of 1 day.

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 12 mm (0.5 inches) of precipitation spread over approximately 1 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 88%. With an average temperature of 21°C (70°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and slightly stifling, which can be quite challenging for travelers.

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 88%, 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	20°C (69°F)	7 mm (0.3 inches)	83%	very high
February Weather	22°C (72°F)	5 mm (0.2 inches)	76%	extreme
March Weather	23°C (74°F)	6 mm (0.2 inches)	66%	extreme
April Weather	25°C (77°F)	22 mm (0.9 inches)	59%	extreme
May Weather	26°C (78°F)	109 mm (4.3 inches)	64%	extreme
June Weather	24°C (76°F)	223 mm (8.8 inches)	69%	extreme
July Weather	25°C (77°F)	140 mm (5.5 inches)	82%	extreme
August Weather	24°C (76°F)	184 mm (7.2 inches)	87%	extreme
September Weather	24°C (76°F)	224 mm (8.8 inches)	87%	extreme
October Weather	23°C (74°F)	144 mm (5.7 inches)	88%	extreme
November Weather	22°C (71°F)	20 mm (0.8 inches)	88%	very high
December Weather	21°C (70°F)	12 mm (0.5 inches)	88%	very high