December Weather in Arin, Peru

Last updated: August 27, 2025

In December, the average temperature in Arin, 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 Arin

In December in Arin, 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 Arin: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Arin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arin, 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).

Data source: Temperature data for Arin generated using information from the Copernicus Climate Change Service.

December Precipitation in Arin

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

December Precipitation Trends in Arin

The chart displays monthly precipitation patterns in Arin, 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 Arin, December typically receives around 256 mm (10.1 inches) of precipitation spread over approximately 29 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Arin

In Arin 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 Arin

This chart illustrates the average monthly humidity levels in Arin, 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 Arin is approximately 93%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arin

In Arin 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 Arin.

Maximum UV Index Levels in Arin for December

The chart shows the monthly maximum UV Index (UVI) for Arin 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 Arin typically reaches 18, which falls under the extreme exposure category.

Data source: Arin 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 Arin Compares to Other Months

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

This table compares monthly weather conditions in Arin, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	206 mm (8.1 inches)	94%	extreme
February Weather	8°C (46°F)	265 mm (10.5 inches)	92%	extreme
March Weather	8°C (46°F)	218 mm (8.6 inches)	92%	extreme
April Weather	8°C (46°F)	128 mm (5.0 inches)	90%	extreme
May Weather	7°C (45°F)	56 mm (2.2 inches)	88%	extreme
June Weather	7°C (44°F)	31 mm (1.2 inches)	77%	extreme
July Weather	6°C (44°F)	30 mm (1.2 inches)	55%	extreme
August Weather	7°C (44°F)	46 mm (1.8 inches)	44%	extreme
September Weather	7°C (45°F)	74 mm (2.9 inches)	51%	extreme
October Weather	8°C (46°F)	147 mm (5.8 inches)	64%	extreme
November Weather	9°C (48°F)	181 mm (7.1 inches)	84%	extreme
December Weather	8°C (47°F)	256 mm (10.1 inches)	93%	extreme