January Weather in Santiago, Mexico

Last updated: August 27, 2025

In January, the average temperature in Santiago, Mexico is a pleasant 21°C (70°F). Expect a minimum temperature of 13°C (56°F) and a maximum of 29°C (85°F), perfect for enjoying outdoor activities. However, be prepared for some light rain, with 12 mm (0.5 in) of precipitation over 4 days. With an average humidity of 66%, it’s a great time to experience the vibrant atmosphere of Santiago!

January Temperature in Santiago

In January in Santiago, the average temperature is 21°C (70°F), with maximums reaching 29°C (85°F) and minimums dropping as low as 13°C (56°F). This pleasant climate makes it an ideal time for outdoor activities and exploring the local attractions.

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

The chart illustrates January 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, January typically has an average temperature of 21°C (70°F), with highs reaching up to 29°C (85°F) and lows dropping to around 13°C (56°F).

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

January Precipitation in Santiago

In Santiago in January, the precipitation amount is 12 mm (0.5 in) over a span of 4 days.

January Precipitation Trends in Santiago

The chart displays monthly precipitation patterns in Santiago, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Santiago, January typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 4 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Santiago

In Santiago in January humidity is 66%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making it comfortable for leisurely strolls but slightly sticky for longer excursions.

January Average Humidity in Santiago

This chart illustrates the average monthly humidity levels in Santiago, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Santiago is approximately 66%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Santiago

In Santiago in January, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Santiago.

Maximum UV Index Levels in Santiago for January

The chart shows the monthly maximum UV Index (UVI) for Santiago in January, 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 January, the maximum UV index in Santiago typically reaches 10, which falls under the very high exposure category.

Data source: Santiago January 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 January 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 January’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 January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (70°F)	12 mm (0.5 inches)	66%	very high
February Weather	22°C (71°F)	8 mm (0.3 inches)	64%	extreme
March Weather	23°C (73°F)	9 mm (0.3 inches)	63%	extreme
April Weather	23°C (74°F)	6 mm (0.3 inches)	69%	extreme
May Weather	24°C (76°F)	95 mm (3.7 inches)	73%	extreme
June Weather	23°C (74°F)	391 mm (15.4 inches)	76%	extreme
July Weather	24°C (75°F)	302 mm (11.9 inches)	78%	extreme
August Weather	23°C (75°F)	426 mm (16.8 inches)	79%	extreme
September Weather	23°C (74°F)	453 mm (17.9 inches)	78%	extreme
October Weather	23°C (74°F)	336 mm (13.2 inches)	75%	extreme
November Weather	22°C (73°F)	92 mm (3.6 inches)	72%	very high
December Weather	21°C (71°F)	23 mm (0.9 inches)	70%	very high