nomadseason

December Weather in Peru, United States

Last updated: June 24, 2025

In Peru, United States, the average temperature in December hovers around -2°C (28°F). However, temperatures can swing dramatically, with minimums plummeting to -23°C (-9°F) and maximums reaching 14°C (58°F). Expect about 132 mm (5.2 in) of precipitation spread over 12 days, contributing to an average humidity of 84%.

December Temperature in Peru

In December in Peru, the average temperature is -2°C (28°F). The maximum can reach 14°C (58°F), while the minimum can be as low as -23°C (-9°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack appropriately for both chilly and milder conditions.

December Weather in Peru: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Peru, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Peru, December typically has an average temperature of -2°C (28°F), with highs reaching up to 14°C (58°F) and lows dropping to around -23°C (-9°F).
JanFebMarAprMayJunJulAugSepOctNovDec242732445665706862513728
Data source: Temperature data for Peru generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Peru

In Peru in December, the precipitation amount is 132 mm (5.2 in) over the course of 12 days.

December Precipitation Trends in Peru

The chart displays monthly precipitation patterns in Peru, 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 Peru, December typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec8911193158123108193144127179113132
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Peru

In Peru in December humidity is 84%. With an average temperature of -2°C (28°F), this humidity feels like a biting chill that cuts through layers of clothing, making outdoor activities uncomfortable and travel challenging.

December Average Humidity in Peru

This chart illustrates the average monthly humidity levels in Peru, 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 Peru is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%76%72%67%64%72%81%87%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Peru

In Peru in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Peru, you can visit Hourly UV Index in Peru.

Maximum UV Index Levels in Peru for December

The chart shows the monthly maximum UV Index (UVI) for Peru 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 Peru typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35681010998642
Data source: Peru 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 Peru Compares to Other Months

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

This table compares monthly weather conditions in Peru, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)89 mm (3.5 inches)89%moderate
February Weather-3°C (27°F)111 mm (4.4 inches)88%moderate
March Weather0°C (33°F)93 mm (3.7 inches)86%high
April Weather7°C (44°F)158 mm (6.2 inches)84%very high
May Weather13°C (56°F)123 mm (4.8 inches)76%very high
June Weather18°C (65°F)108 mm (4.3 inches)72%very high
July Weather21°C (71°F)193 mm (7.6 inches)66%very high
August Weather20°C (69°F)144 mm (5.7 inches)64%very high
September Weather16°C (62°F)127 mm (5.0 inches)72%very high
October Weather11°C (51°F)179 mm (7.0 inches)81%high
November Weather3°C (37°F)113 mm (4.4 inches)87%moderate
December Weather-2°C (28°F)132 mm (5.2 inches)84%low

Compare Peru's Climate with Cities Worldwide