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December Weather in El Rosario, Mexico

Last updated: August 27, 2025

In December, the average temperature in El Rosario, Mexico is a pleasant 20°C (69°F). Visitors can expect a range with minimums dipping to 8°C (47°F) and maximums soaring up to 31°C (88°F). The area experiences a modest average precipitation of 18 mm (0.7 in) over approximately 1 day, accompanied by a comfortable average humidity of 78%.

December Temperature in El Rosario

In December in El Rosario, the average temperature is 20°C (69°F). Maximums can reach 31°C (88°F) and minimums can drop to as low as 8°C (47°F). This climate makes El Rosario an ideal destination for travelers seeking pleasant weather and a variety of outdoor activities.

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 20°C (69°F), with highs reaching up to 31°C (88°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec676871737780818079787368
Data source: Temperature data for El Rosario 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 El Rosario

In El Rosario in December, the precipitation amount is 18 mm (0.7 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 18 mm (0.7 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec1825001651732782201351318
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in El Rosario

In El Rosario in December, humidity is 78%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making travel somewhat uncomfortable as sweat clings to your skin and the air feels thick and heavy, urging you to seek out shaded areas and refreshing drinks.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%66%61%56%61%73%82%83%83%79%77%78%
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 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810121413131313121197
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.
 TemperaturePrecipitationHumidityUV
January Weather19°C (67°F)17 mm (0.7 inches)74%very high
February Weather20°C (69°F)25 mm (1.0 inches)66%very high
March Weather22°C (71°F)0 mm (0.0 inches)61%extreme
April Weather23°C (74°F)0 mm (0.0 inches)56%extreme
May Weather25°C (78°F)1 mm (0.0 inches)61%extreme
June Weather27°C (80°F)65 mm (2.6 inches)73%extreme
July Weather27°C (81°F)173 mm (6.8 inches)82%extreme
August Weather27°C (81°F)278 mm (10.9 inches)83%extreme
September Weather26°C (79°F)220 mm (8.7 inches)83%extreme
October Weather26°C (79°F)135 mm (5.3 inches)78%extreme
November Weather23°C (74°F)13 mm (0.5 inches)77%very high
December Weather20°C (69°F)18 mm (0.7 inches)78%high

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