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December Weather in Calca, Peru

Last updated: August 27, 2025

In December, the average temperature in Calca, Peru hovers around 8°C (47°F), with a range that can dip to a chilly 2°C (35°F) and peak at a mild 19°C (66°F). Expect a wet month with 256 mm (10.1 in) of precipitation spread over 29 days. Humidity levels can be quite high, averaging a cozy 93%.

December Temperature in Calca

In December in Calca, the average temperature is 8°C (47°F). Maximum temperatures can reach 19°C (66°F) and minimums can drop to as low as 2°C (35°F). Be prepared for cool weather and pack layers if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Calca, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Calca, December typically has an average temperature of 8°C (47°F), with highs reaching up to 19°C (66°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec464646464544434445464747
Data source: Temperature data for Calca 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 Calca

In Calca in December, the total precipitation amount is 256 mm (10.1 in) spread over 29 days.

December Precipitation Trends in Calca

The chart displays monthly precipitation patterns in Calca, 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 Calca, December typically receives around 256 mm (10.1 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec2062662181285731304675147181256
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Calca

In Calca in December humidity is 93%. With an average temperature of 8°C (47°F), this humidity feels like a chilly embrace that seeps into your clothes, making every step you take feel heavier and damp, which can be quite uncomfortable for traveling.

December Average Humidity in Calca

This chart illustrates the average monthly humidity levels in Calca, 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 Calca is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec94%92%92%90%88%77%55%44%51%64%84%93%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Calca

In Calca in December, the maximum UV index is 18, which corresponds to an extreme exposure category. This means that the time to burn is just 10 minutes. For more detailed information, you can check the hourly UV index in Calca.

Maximum UV Index Levels in Calca for December

The chart shows the monthly maximum UV Index (UVI) for Calca 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 Calca typically reaches 18, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec191919171411131416182318
Data source: Calca 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 Calca Compares to Other Months

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

This table compares monthly weather conditions in Calca, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)206 mm (8.1 inches)94%extreme
February Weather8°C (46°F)265 mm (10.5 inches)92%extreme
March Weather8°C (46°F)218 mm (8.6 inches)92%extreme
April Weather8°C (46°F)128 mm (5.0 inches)90%extreme
May Weather7°C (45°F)56 mm (2.2 inches)88%extreme
June Weather7°C (44°F)31 mm (1.2 inches)77%extreme
July Weather6°C (44°F)30 mm (1.2 inches)55%extreme
August Weather7°C (44°F)46 mm (1.8 inches)44%extreme
September Weather7°C (45°F)74 mm (2.9 inches)51%extreme
October Weather8°C (46°F)147 mm (5.8 inches)64%extreme
November Weather9°C (48°F)181 mm (7.1 inches)84%extreme
December Weather8°C (47°F)256 mm (10.1 inches)93%extreme

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