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December Weather in San Pedro, Peru

Last updated: August 27, 2025

In December, the average temperature in San Pedro, Peru hovers around 7°C (45°F). Expect a chilly range with minimums dropping to -2°C (29°F) and maximums reaching 18°C (64°F). Prepare for a wet month, as precipitation accumulates to 225 mm (8.8 in) over 27 days, coupled with an average humidity of 90%.

December Temperature in San Pedro

In December in San Pedro, the average temperature is 7°C (45°F). The maximum can reach 18°C (64°F) and the minimum can be as low as -2°C (29°F). This weather is perfect for exploring the beautiful sights while dressing in layers to comfortably adjust to the temperature fluctuations.

December Weather in San Pedro: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Pedro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Pedro, December typically has an average temperature of 7°C (45°F), with highs reaching up to 18°C (64°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec444444434139394143454645
Data source: Temperature data for San Pedro 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 San Pedro

In San Pedro in December, the precipitation amount is 225 mm (8.8 in) over the course of 27 days.

December Precipitation Trends in San Pedro

The chart displays monthly precipitation patterns in San Pedro, 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 San Pedro, December typically receives around 225 mm (8.8 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec223256247973612131237105157225
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Pedro

In San Pedro in December humidity is 90%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and prompting travelers to seek shelter indoors or in cozy cafes.

December Average Humidity in San Pedro

This chart illustrates the average monthly humidity levels in San Pedro, 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 San Pedro is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%92%91%87%76%57%51%67%77%85%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Pedro

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.

Maximum UV Index Levels in San Pedro for December

The chart shows the monthly maximum UV Index (UVI) for San Pedro 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 San Pedro typically reaches 19, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec232319171411131517181919
Data source: San Pedro 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 San Pedro Compares to Other Months

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.

This table compares monthly weather conditions in San Pedro, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)222 mm (8.8 inches)92%extreme
February Weather7°C (44°F)256 mm (10.1 inches)93%extreme
March Weather7°C (44°F)247 mm (9.7 inches)92%extreme
April Weather6°C (43°F)97 mm (3.8 inches)91%extreme
May Weather5°C (41°F)36 mm (1.4 inches)87%extreme
June Weather4°C (40°F)12 mm (0.5 inches)76%extreme
July Weather4°C (39°F)13 mm (0.5 inches)57%extreme
August Weather5°C (41°F)12 mm (0.5 inches)51%extreme
September Weather6°C (44°F)37 mm (1.5 inches)67%extreme
October Weather7°C (45°F)105 mm (4.1 inches)77%extreme
November Weather8°C (46°F)157 mm (6.2 inches)85%extreme
December Weather7°C (45°F)225 mm (8.8 inches)90%extreme

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