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December Weather in Santiago de Cao, Peru

Last updated: August 27, 2025

In December, the average temperature in Santiago de Cao, Peru is a pleasant 19°C (67°F). Expect a minimum of 16°C (61°F) and a maximum of 23°C (75°F), making it ideal for most outdoor activities. However, be prepared for some light rain, with an average precipitation of 11 mm (0.4 in) spread over 3 days. Keep in mind that the average humidity is quite high at 91%, which may add to the overall warmth.

December Temperature in Santiago de Cao

In December, in Santiago de Cao, the average temperature is 19°C (67°F). Maximums can reach 23°C (75°F), while minimums can dip to as low as 16°C (61°F). This mild climate makes Santiago de Cao an ideal destination for travelers seeking comfortable weather.

December Weather in Santiago de Cao: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Santiago de Cao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago de Cao, December typically has an average temperature of 19°C (67°F), with highs reaching up to 23°C (75°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec707373696664636261626467
Data source: Temperature data for Santiago de Cao 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 Santiago de Cao

In Santiago de Cao in December, the precipitation amount is 11 mm (0.4 in) over the course of 3 days.

December Precipitation Trends in Santiago de Cao

The chart displays monthly precipitation patterns in Santiago de Cao, 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 Santiago de Cao, December typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec99178468986511
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Santiago de Cao

In Santiago de Cao in December, humidity is 91%. With an average temperature of 19°C (67°F), this humidity feels like a warm blanket enveloping you, creating a heavy atmosphere that can be quite stifling for traveling.

December Average Humidity in Santiago de Cao

This chart illustrates the average monthly humidity levels in Santiago de Cao, 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 Santiago de Cao is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%90%89%84%73%55%53%62%82%89%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Santiago de Cao

In Santiago de Cao in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Santiago de Cao, you can check here.

Maximum UV Index Levels in Santiago de Cao for December

The chart shows the monthly maximum UV Index (UVI) for Santiago de Cao 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 Santiago de Cao typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151515141211111113141414
Data source: Santiago de Cao 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 Santiago de Cao Compares to Other Months

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

This table compares monthly weather conditions in Santiago de Cao, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (71°F)9 mm (0.4 inches)91%extreme
February Weather23°C (73°F)9 mm (0.4 inches)89%extreme
March Weather23°C (73°F)17 mm (0.7 inches)89%extreme
April Weather20°C (69°F)8 mm (0.3 inches)88%extreme
May Weather19°C (66°F)4 mm (0.1 inches)84%extreme
June Weather18°C (64°F)6 mm (0.2 inches)73%extreme
July Weather17°C (63°F)8 mm (0.3 inches)55%extreme
August Weather16°C (62°F)9 mm (0.4 inches)53%extreme
September Weather16°C (61°F)8 mm (0.3 inches)62%extreme
October Weather17°C (62°F)6 mm (0.2 inches)82%extreme
November Weather18°C (64°F)5 mm (0.2 inches)89%extreme
December Weather19°C (67°F)11 mm (0.4 inches)91%extreme

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