December Weather in Alvear, Argentina

Last updated: August 22, 2025

In Alvear, Argentina, the average temperature in December is a cozy 26°C (78°F). However, temperatures can swing widely, with minimums dropping to 12°C (53°F) and maximums skyrocketing to 40°C (104°F). Expect a bit of rain, too, with an average precipitation of 90 mm (3.5 in) spread over 7 days. You'll also experience high humidity levels, averaging around 81%, adding to the tropical feel of the region.

December Temperature in Alvear

In December in Alvear, the average temperature is 26°C (78°F). Maximum can reach 40°C (104°F), and minimum can be as low as 12°C (53°F). Visitors should be prepared for warm days and cooler evenings, making it a perfect time for both outdoor activities and exploring the local culture.

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

The chart illustrates December temperature patterns in Alvear, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alvear, December typically has an average temperature of 26°C (78°F), with highs reaching up to 40°C (104°F) and lows dropping to around 12°C (53°F).

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

December Precipitation in Alvear

In Alvear in December, the precipitation amount is 90 mm (3.5 in) over the course of 7 days.

December Precipitation Trends in Alvear

The chart displays monthly precipitation patterns in Alvear, 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 Alvear, December typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 7 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 Alvear

In Alvear in December, humidity is 81%. With an average temperature of 26°C (78°F), this humidity feels like a thick, warm blanket enveloping you, making outdoor activities feel a bit more strenuous and the air heavy, which can be quite challenging for traveling.

December Average Humidity in Alvear

This chart illustrates the average monthly humidity levels in Alvear, 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 Alvear is approximately 81%, 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 Alvear

In Alvear 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 Alvear, you can check here.

Maximum UV Index Levels in Alvear for December

The chart shows the monthly maximum UV Index (UVI) for Alvear 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 Alvear typically reaches 14, which falls under the extreme exposure category.

Data source: Alvear 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 Alvear Compares to Other Months

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

This table compares monthly weather conditions in Alvear, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (80°F)	180 mm (7.1 inches)	70%	extreme
February Weather	26°C (79°F)	62 mm (2.4 inches)	66%	extreme
March Weather	24°C (76°F)	145 mm (5.7 inches)	73%	extreme
April Weather	21°C (71°F)	134 mm (5.3 inches)	81%	very high
May Weather	17°C (64°F)	163 mm (6.4 inches)	82%	high
June Weather	16°C (61°F)	105 mm (4.1 inches)	77%	moderate
July Weather	15°C (59°F)	60 mm (2.4 inches)	69%	moderate
August Weather	16°C (62°F)	78 mm (3.1 inches)	51%	high
September Weather	19°C (67°F)	140 mm (5.5 inches)	59%	very high
October Weather	21°C (71°F)	138 mm (5.4 inches)	63%	extreme
November Weather	24°C (75°F)	130 mm (5.1 inches)	66%	extreme
December Weather	26°C (78°F)	90 mm (3.5 inches)	81%	extreme