December Weather in El Rosario, Mexico

Last updated: August 27, 2025

In December, the average temperature in El Rosario, Mexico hovers around 14°C (58°F). Expect a refreshing range, with minimums dipping to 0°C (32°F) and highs reaching up to 28°C (82°F). The region typically experiences 8 mm (0.3 in) of precipitation over the course of 1 day, coupled with an average humidity of 74%.

December Temperature in El Rosario

In December in El Rosario, the average temperature is 14°C (58°F), with maximums reaching 28°C (82°F) and minimums dropping to 0°C (32°F). This fluctuating climate makes it essential for travelers to pack layers and prepare for varying weather conditions.

December Weather in El Rosario: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in El Rosario, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In El Rosario, December typically has an average temperature of 14°C (58°F), with highs reaching up to 28°C (82°F) and lows dropping to around 0°C (32°F).

Data source: Temperature data for El Rosario generated using information from the Copernicus Climate Change Service.

December Precipitation in El Rosario

In El Rosario in December, the precipitation amount is 8 mm (0.3 in) over the course of 1 day.

December Precipitation Trends in El Rosario

The chart displays monthly precipitation patterns in El Rosario, 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 El Rosario, December typically receives around 8 mm (0.3 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 El Rosario

In El Rosario in December humidity is 74%. With an average temperature of 14°C (58°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities slightly uncomfortable and prompting travelers to seek shade or indoor venues more often.

December Average Humidity in El Rosario

This chart illustrates the average monthly humidity levels in El Rosario, 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 El Rosario is approximately 74%, 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 El Rosario

In El Rosario 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 El Rosario.

Maximum UV Index Levels in El Rosario for December

The chart shows the monthly maximum UV Index (UVI) for El Rosario 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 El Rosario typically reaches 8, which falls under the very high exposure category.

Data source: El Rosario 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 El Rosario Compares to Other Months

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

This table compares monthly weather conditions in El Rosario, 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)	11 mm (0.4 inches)	64%	very high
February Weather	16°C (62°F)	11 mm (0.4 inches)	57%	extreme
March Weather	19°C (67°F)	5 mm (0.2 inches)	46%	extreme
April Weather	21°C (70°F)	1 mm (0.0 inches)	42%	extreme
May Weather	23°C (73°F)	26 mm (1.0 inches)	51%	extreme
June Weather	22°C (72°F)	163 mm (6.4 inches)	74%	extreme
July Weather	20°C (68°F)	264 mm (10.4 inches)	79%	extreme
August Weather	20°C (68°F)	192 mm (7.6 inches)	81%	extreme
September Weather	19°C (67°F)	184 mm (7.2 inches)	84%	extreme
October Weather	19°C (66°F)	78 mm (3.1 inches)	75%	extreme
November Weather	17°C (62°F)	17 mm (0.7 inches)	71%	very high
December Weather	14°C (58°F)	8 mm (0.3 inches)	74%	very high