December Weather in Santiago, Colombia

Last updated: August 23, 2025

In December, the average temperature in Santiago, Colombia hovers around 13°C (56°F). Expect a minimum chill of 7°C (44°F) and a warm peak of 22°C (72°F). With 272 mm (10.7 in) of precipitation spread over 28 days, you'll want to be prepared for damp conditions. The average humidity is a high 85%, adding to the wet atmosphere.

December Temperature in Santiago

In December in Santiago, the average temperature is 13°C (56°F). Maximums can reach 22°C (72°F), while minimums can drop as low as 7°C (44°F). It's a great time for travelers to enjoy mild weather, making it perfect for outdoor activities and sightseeing.

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

The chart illustrates December temperature patterns in Santiago, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago, December typically has an average temperature of 13°C (56°F), with highs reaching up to 22°C (72°F) and lows dropping to around 7°C (44°F).

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

December Precipitation in Santiago

In Santiago in December, the precipitation amount is 272 mm (10.7 in) falling over the course of 28 days.

December Precipitation Trends in Santiago

The chart displays monthly precipitation patterns in Santiago, 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 Santiago, December typically receives around 272 mm (10.7 inches) of precipitation spread over approximately 28 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 Santiago

In Santiago in December humidity is 85%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that wraps around you, making outdoor activities feel heavier and less enjoyable, as layers of clothing cling to the skin and breath becomes visible in the moist air.

December Average Humidity in Santiago

This chart illustrates the average monthly humidity levels in Santiago, 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 Santiago is approximately 85%, 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 Santiago

In Santiago in December, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Santiago.

Maximum UV Index Levels in Santiago for December

The chart shows the monthly maximum UV Index (UVI) for Santiago 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 Santiago typically reaches 13, which falls under the extreme exposure category.

Data source: Santiago 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 Santiago Compares to Other Months

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

This table compares monthly weather conditions in Santiago, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	205 mm (8.1 inches)	72%	extreme
February Weather	14°C (57°F)	218 mm (8.6 inches)	66%	extreme
March Weather	14°C (57°F)	350 mm (13.8 inches)	74%	extreme
April Weather	13°C (56°F)	336 mm (13.2 inches)	83%	extreme
May Weather	13°C (56°F)	353 mm (13.9 inches)	93%	extreme
June Weather	13°C (55°F)	292 mm (11.5 inches)	93%	extreme
July Weather	12°C (54°F)	231 mm (9.1 inches)	84%	extreme
August Weather	12°C (54°F)	161 mm (6.3 inches)	61%	extreme
September Weather	13°C (55°F)	186 mm (7.3 inches)	53%	extreme
October Weather	13°C (56°F)	274 mm (10.8 inches)	67%	extreme
November Weather	14°C (57°F)	305 mm (12.0 inches)	78%	extreme
December Weather	13°C (56°F)	272 mm (10.7 inches)	85%	extreme