January Weather in Santiago, Mexico

Last updated: August 27, 2025

In Santiago, Mexico, the average temperature in January hovers around 17°C (63°F). You can expect temperatures to vary, with a minimum of 6°C (44°F) and a maximum of 30°C (87°F). The region receives approximately 10 mm (0.4 in) of precipitation over the course of just 1 day. Furthermore, the average humidity stands at a comfortable 68%.

January Temperature in Santiago

In January in Santiago, the average temperature is 17°C (63°F). Maximums can reach 30°C (87°F), while minimums can drop as low as 6°C (44°F). This variability in temperature makes it advisable to pack layers for your travels.

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 17°C (63°F), with highs reaching up to 30°C (87°F) and lows dropping to around 6°C (44°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 10 mm (0.4 in) over the course of 1 day.

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 10 mm (0.4 inches) of precipitation spread over approximately 1 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 68%. With an average temperature of 17°C (63°F), this humidity feels like a warm, gentle embrace, making it perfect for exploring local attractions but slightly challenging for outdoor activities during the hottest parts of the day.

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 68%, 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 is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. 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 7, which falls under the 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	17°C (63°F)	10 mm (0.4 inches)	68%	high
February Weather	18°C (65°F)	14 mm (0.6 inches)	66%	very high
March Weather	20°C (69°F)	2 mm (0.1 inches)	65%	extreme
April Weather	23°C (73°F)	1 mm (0.0 inches)	63%	extreme
May Weather	25°C (77°F)	0 mm (0.0 inches)	63%	extreme
June Weather	28°C (83°F)	22 mm (0.9 inches)	66%	extreme
July Weather	28°C (84°F)	93 mm (3.7 inches)	71%	extreme
August Weather	28°C (83°F)	131 mm (5.2 inches)	73%	extreme
September Weather	26°C (80°F)	175 mm (6.9 inches)	74%	extreme
October Weather	25°C (78°F)	25 mm (1.0 inches)	73%	extreme
November Weather	22°C (72°F)	24 mm (0.9 inches)	71%	very high
December Weather	18°C (65°F)	14 mm (0.5 inches)	69%	high