Last updated: June 24, 2025
In December, the average temperature in Peru, United States hovers around -2°C (29°F), with extremes ranging from a chilly -24°C (-11°F) to a surprisingly warm 14°C (57°F). Be prepared for 72 mm (2.8 in) of precipitation distributed over 12 days, and brace yourself for a high average humidity of 89%. 🌧️
In December in Peru, the average temperature is -2°C (29°F). Maximums can reach 14°C (57°F), while minimums can drop to as low as -24°C (-11°F). Travelers should be prepared for a wide range of temperatures when visiting during this month.
In Peru in December, the total precipitation amount is 72 mm (2.8 in) over the course of 12 days.
In Peru in December humidity is 89%. With an average temperature of -2°C (29°F), this humidity feels like a suffocating fog that clings to your skin, making outdoor adventures less enjoyable and giving travel a heavy and oppressive feel.
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.
UV Risk Categories
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.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -6°C (22°F) | 72 mm (2.8 inches) | 93% | low |
February Weather | -5°C (24°F) | 73 mm (2.9 inches) | 92% | moderate |
March Weather | -1°C (31°F) | 67 mm (2.6 inches) | 86% | moderate |
April Weather | 6°C (44°F) | 102 mm (4.0 inches) | 85% | very high |
May Weather | 14°C (57°F) | 80 mm (3.2 inches) | 80% | very high |
June Weather | 19°C (66°F) | 97 mm (3.8 inches) | 74% | very high |
July Weather | 22°C (72°F) | 101 mm (4.0 inches) | 76% | very high |
August Weather | 21°C (70°F) | 94 mm (3.7 inches) | 75% | very high |
September Weather | 17°C (63°F) | 66 mm (2.6 inches) | 78% | high |
October Weather | 11°C (51°F) | 139 mm (5.5 inches) | 86% | moderate |
November Weather | 3°C (37°F) | 99 mm (3.9 inches) | 88% | moderate |
December Weather | -2°C (29°F) | 72 mm (2.8 inches) | 89% | low |