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December Weather in Aco, Peru

Last updated: August 27, 2025

In December, the average temperature in Aco, Peru hovers around 11°C (52°F), with daily variations ranging from a cool 2°C (37°F) to a warm 19°C (66°F). Visitors should be prepared for considerable precipitation, averaging 291 mm (11.5 in) over 28 days, and humidity levels are notably high at 91%. It's a time of year that calls for layered clothing and a sturdy umbrella!

December Temperature in Aco

In December in Aco, the average temperature is 11°C (52°F). The maximum can reach 19°C (66°F), while the minimum can drop as low as 2°C (37°F). Travelers should prepare for mild weather with the possibility of cooler evenings, making it a great time to explore the area while dressed in layers.

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

The chart illustrates December temperature patterns in Aco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aco, December typically has an average temperature of 11°C (52°F), with highs reaching up to 19°C (66°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec515151515252525352525251
Data source: Temperature data for Aco 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 Aco

In Aco in December, the total precipitation amount is 291 mm (11.5 in) spread over a duration of 28 days.

December Precipitation Trends in Aco

The chart displays monthly precipitation patterns in Aco, 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 Aco, December typically receives around 291 mm (11.5 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec237261384251160663939111220187291
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Aco

In Aco in December, humidity is 91%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers and plan for cozy indoor activities rather than lengthy outdoor explorations.

December Average Humidity in Aco

This chart illustrates the average monthly humidity levels in Aco, 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 Aco 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 Aco

In Aco in December, the maximum UV index reaches an alarming 17, which falls under the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to stay protected. For more details on the hourly UV index in Aco, you can check Hourly UV Index in Aco.

Maximum UV Index Levels in Aco for December

The chart shows the monthly maximum UV Index (UVI) for Aco 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 Aco typically reaches 17, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec181819181513141417171717
Data source: Aco 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 Aco Compares to Other Months

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

This table compares monthly weather conditions in Aco, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)237 mm (9.3 inches)91%extreme
February Weather11°C (51°F)261 mm (10.3 inches)89%extreme
March Weather10°C (51°F)383 mm (15.1 inches)89%extreme
April Weather11°C (51°F)251 mm (9.9 inches)88%extreme
May Weather11°C (52°F)160 mm (6.3 inches)84%extreme
June Weather11°C (52°F)66 mm (2.6 inches)73%extreme
July Weather11°C (52°F)39 mm (1.5 inches)55%extreme
August Weather11°C (53°F)39 mm (1.5 inches)53%extreme
September Weather11°C (53°F)111 mm (4.4 inches)62%extreme
October Weather11°C (52°F)220 mm (8.7 inches)82%extreme
November Weather11°C (52°F)186 mm (7.3 inches)89%extreme
December Weather11°C (52°F)291 mm (11.5 inches)91%extreme

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