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December Weather in El Rosario, Mexico

Last updated: August 27, 2025

In December, the average temperature in El Rosario, Mexico hovers around 16°C (61°F), with a minimum of 2°C (36°F) and a maximum reaching 28°C (83°F). Expect a light drizzle, as precipitation amounts to 6 mm (0.2 in) over the course of a single day, accompanied by a relatively high average humidity of 88%. Prepare for a mix of warmth and moisture as you explore this charming locale!

December Temperature in El Rosario

In December in El Rosario, the average temperature is 16°C (61°F). Maximum can reach 28°C (83°F), and the minimum can be as low as 2°C (36°F). This range makes it a great time for travelers to enjoy outdoor activities while being prepared for varying temperatures.

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 16°C (61°F), with highs reaching up to 28°C (83°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec616466686966666565656361
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 6 mm (0.2 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 6 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec33112960215102174227109136
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 88%. With an average temperature of 16°C (61°F), this humidity feels like a warm blanket wrapping around you, making it slightly uncomfortable for traveling as you may find yourself constantly wiping away beads of sweat while trying to enjoy the sights.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%80%73%67%72%73%76%80%84%89%88%88%
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 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 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10131515151515141413119
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 Weather16°C (61°F)3 mm (0.1 inches)84%very high
February Weather18°C (64°F)3 mm (0.1 inches)80%extreme
March Weather19°C (66°F)11 mm (0.4 inches)73%extreme
April Weather20°C (68°F)29 mm (1.2 inches)67%extreme
May Weather20°C (69°F)60 mm (2.4 inches)72%extreme
June Weather19°C (66°F)215 mm (8.5 inches)73%extreme
July Weather19°C (66°F)102 mm (4.0 inches)76%extreme
August Weather19°C (66°F)174 mm (6.9 inches)80%extreme
September Weather19°C (66°F)227 mm (8.9 inches)84%extreme
October Weather18°C (65°F)109 mm (4.3 inches)89%extreme
November Weather17°C (63°F)12 mm (0.5 inches)88%extreme
December Weather16°C (61°F)6 mm (0.2 inches)88%very high

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