Last updated: August 27, 2025
In San Pedro, Peru, the average temperature in December hovers around 6°C (44°F), with extremes ranging from a chilly -6°C (22°F) to a mild 17°C (63°F). Expect 166 mm (6.5 in) of precipitation over about 24 days, contributing to an average humidity of 82%. Be prepared for a mix of cool and wet conditions!
In December in San Pedro, the average temperature is 6°C (44°F), with maximums reaching 17°C (63°F) and minimums dropping as low as -6°C (22°F). It's advisable to dress in layers and be prepared for varying weather conditions if you plan to travel during this time.
In San Pedro in December, the total precipitation amount is 166 mm (6.5 in) spread over 24 days.
In San Pedro in December humidity is 82%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that settles into your bones, making travel uncomfortable as every step feels heavy with moisture and the cool air seems to cling to your skin.
In San Pedro in December, the maximum UV index reaches 19, which corresponds to an extreme exposure category. With a time to burn of just 10 minutes, it’s essential to take precautions. For detailed information, you can check the hourly UV index in San Pedro.
UV Risk Categories
Weather in San Pedro varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Pedro, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 6°C (44°F) | 257 mm (10.1 inches) | 89% | extreme |
| February Weather | 6°C (44°F) | 262 mm (10.3 inches) | 90% | extreme |
| March Weather | 6°C (44°F) | 283 mm (11.1 inches) | 90% | extreme |
| April Weather | 6°C (43°F) | 122 mm (4.8 inches) | 90% | extreme |
| May Weather | 5°C (41°F) | 63 mm (2.5 inches) | 84% | extreme |
| June Weather | 4°C (40°F) | 35 mm (1.4 inches) | 67% | extreme |
| July Weather | 4°C (40°F) | 29 mm (1.1 inches) | 53% | extreme |
| August Weather | 5°C (41°F) | 30 mm (1.2 inches) | 47% | extreme |
| September Weather | 6°C (42°F) | 91 mm (3.6 inches) | 53% | extreme |
| October Weather | 6°C (43°F) | 113 mm (4.5 inches) | 67% | extreme |
| November Weather | 6°C (44°F) | 116 mm (4.6 inches) | 75% | extreme |
| December Weather | 6°C (44°F) | 166 mm (6.5 inches) | 82% | extreme |