December Weather in Rio Grande, Peru

Last updated: August 27, 2025

In Rio Grande, Peru, the average temperature in December hovers around 21°C (71°F), creating a pleasant atmosphere for visitors. Expect minimums of 14°C (58°F) and maximums reaching 31°C (88°F), offering a comfortable range. Be prepared for some light rain, as the expected precipitation is 6 mm (0.2 in), typically over just 1 day. With an average humidity of 83%, it's a great time to enjoy the soft, welcoming air of this beautiful location!

December Temperature in Rio Grande

In December in Rio Grande, the average temperature is 21°C (71°F). The maximum can reach 31°C (88°F), and the minimum can be as low as 14°C (58°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

December Weather in Rio Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Rio Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Grande, December typically has an average temperature of 21°C (71°F), with highs reaching up to 31°C (88°F) and lows dropping to around 14°C (58°F).

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

December Precipitation in Rio Grande

In Rio Grande in December, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

December Precipitation Trends in Rio Grande

The chart displays monthly precipitation patterns in Rio Grande, 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 Rio Grande, December typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 1 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 Rio Grande

In Rio Grande in December humidity is 83%. With an average temperature of 21°C (71°F), this humidity feels like walking through a warm mist, making travel both refreshing and slightly uncomfortable as the air clings to your skin and you find yourself needing to take frequent breaks to hydrate.

December Average Humidity in Rio Grande

This chart illustrates the average monthly humidity levels in Rio Grande, 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 Rio Grande is approximately 83%, 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 Rio Grande

In Rio Grande in December, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Rio Grande.

Maximum UV Index Levels in Rio Grande for December

The chart shows the monthly maximum UV Index (UVI) for Rio Grande 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 Rio Grande typically reaches 16, which falls under the extreme exposure category.

Data source: Rio Grande 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 Rio Grande Compares to Other Months

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

This table compares monthly weather conditions in Rio Grande, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (72°F)	63 mm (2.5 inches)	85%	extreme
February Weather	23°C (73°F)	68 mm (2.7 inches)	85%	extreme
March Weather	23°C (74°F)	30 mm (1.2 inches)	86%	extreme
April Weather	22°C (71°F)	7 mm (0.3 inches)	88%	extreme
May Weather	20°C (68°F)	2 mm (0.1 inches)	85%	extreme
June Weather	18°C (65°F)	2 mm (0.1 inches)	78%	very high
July Weather	18°C (64°F)	2 mm (0.1 inches)	75%	extreme
August Weather	18°C (65°F)	1 mm (0.0 inches)	73%	extreme
September Weather	19°C (66°F)	1 mm (0.0 inches)	74%	extreme
October Weather	20°C (67°F)	3 mm (0.1 inches)	78%	extreme
November Weather	20°C (69°F)	1 mm (0.0 inches)	82%	extreme
December Weather	21°C (71°F)	6 mm (0.2 inches)	83%	extreme