December Weather in Los Santiagos, Mexico

Last updated: August 27, 2025

In Los Santiagos, Mexico, the average temperature in December hovers around 13°C (56°F), creating a mild climate for locals and visitors alike. Expect minimum temperatures to dip as low as -1°C (31°F), while the mercury can rise to a comfortable 26°C (79°F) on warmer days. With an average precipitation of just 15 mm (0.6 in) spread over 2 days, and humidity levels reaching 74%, this month offers a pleasant atmosphere that’s perfect for exploring the beauty of the region.

December Temperature in Los Santiagos

In December in Los Santiagos, the average temperature is 13°C (56°F), with maximums reaching 26°C (79°F) and minimums dipping as low as -1°C (31°F). Be prepared for a wide range of temperatures during your travels, ensuring you pack both warm and lighter clothing options.

December Weather in Los Santiagos: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Los Santiagos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Los Santiagos, December typically has an average temperature of 13°C (56°F), with highs reaching up to 26°C (79°F) and lows dropping to around -1°C (31°F).

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

December Precipitation in Los Santiagos

In Los Santiagos in December, the precipitation amount is 15 mm (0.6 in) over the course of 2 days.

December Precipitation Trends in Los Santiagos

The chart displays monthly precipitation patterns in Los Santiagos, 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 Los Santiagos, December typically receives around 15 mm (0.6 inches) of precipitation spread over approximately 2 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Los Santiagos

In Los Santiagos in December humidity is 74%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, especially for travelers unaccustomed to such conditions.

December Average Humidity in Los Santiagos

This chart illustrates the average monthly humidity levels in Los Santiagos, 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 Los Santiagos is approximately 74%, 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 Los Santiagos

In Los Santiagos in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Los Santiagos.

Maximum UV Index Levels in Los Santiagos for December

The chart shows the monthly maximum UV Index (UVI) for Los Santiagos 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 Los Santiagos typically reaches 8, which falls under the very high exposure category.

Data source: Los Santiagos 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 Los Santiagos Compares to Other Months

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

This table compares monthly weather conditions in Los Santiagos, 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)	16 mm (0.6 inches)	64%	very high
February Weather	15°C (59°F)	17 mm (0.7 inches)	57%	extreme
March Weather	18°C (65°F)	7 mm (0.3 inches)	46%	extreme
April Weather	20°C (68°F)	2 mm (0.1 inches)	42%	extreme
May Weather	21°C (71°F)	29 mm (1.2 inches)	51%	extreme
June Weather	21°C (71°F)	165 mm (6.5 inches)	74%	extreme
July Weather	19°C (66°F)	273 mm (10.7 inches)	79%	extreme
August Weather	19°C (67°F)	172 mm (6.8 inches)	81%	extreme
September Weather	18°C (66°F)	198 mm (7.8 inches)	84%	extreme
October Weather	18°C (64°F)	75 mm (3.0 inches)	75%	extreme
November Weather	15°C (60°F)	21 mm (0.8 inches)	71%	very high
December Weather	13°C (56°F)	15 mm (0.6 inches)	74%	very high