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December Weather in El Rosario, Peru

Last updated: August 27, 2025

In December, the average temperature in El Rosario, Peru hovers around 6°C (44°F), with temperatures sometimes dipping to a chilly -3°C (26°F) at night or reaching a pleasant 15°C (60°F) during the day. Expect frequent rain, with 192 mm (7.5 in) of precipitation spread over 28 days, contributing to a high average humidity of 90%. Be prepared for a moist and cool month!

December Temperature in El Rosario

In December in El Rosario, the average temperature is 6°C (44°F). Maximum can reach 15°C (60°F) and minimum can be as low as -3°C (26°F). Travelers should prepare for varying weather conditions, ranging from chilly to mild.

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 6°C (44°F), with highs reaching up to 15°C (60°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec434343424139383940424444
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 192 mm (7.5 in) over a period of 28 days.

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 192 mm (7.5 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec1842232421108337264280121149192
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 90%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that clings to your skin, making outdoor excursions uncomfortable and requiring extra layers to stay warm and dry while exploring.

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 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%91%89%85%65%47%38%40%56%76%90%
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 18, which corresponds to an extreme exposure category. This means that the time to burn is just 10 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 18, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec191919181512131517181818
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 Weather6°C (43°F)184 mm (7.2 inches)91%extreme
February Weather6°C (43°F)223 mm (8.8 inches)90%extreme
March Weather6°C (43°F)242 mm (9.5 inches)91%extreme
April Weather6°C (42°F)110 mm (4.3 inches)89%extreme
May Weather5°C (41°F)83 mm (3.3 inches)85%extreme
June Weather4°C (40°F)37 mm (1.4 inches)65%extreme
July Weather4°C (39°F)25 mm (1.0 inches)47%extreme
August Weather4°C (39°F)42 mm (1.7 inches)38%extreme
September Weather5°C (41°F)80 mm (3.1 inches)40%extreme
October Weather5°C (42°F)121 mm (4.7 inches)56%extreme
November Weather6°C (44°F)149 mm (5.8 inches)76%extreme
December Weather6°C (44°F)192 mm (7.5 inches)90%extreme

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