January Weather in Santiago, Peru

Last updated: August 27, 2025

In January, the average temperature in Santiago, Peru is a comfortable 23°C (74°F). Expect a range with minimums dipping to 18°C (64°F) and maximums rising to 32°C (89°F). The month sees about 30 mm (1.2 in) of precipitation over 6 days, contributing to an average humidity of 85%.

January Temperature in Santiago

In January in Santiago, the average temperature is 23°C (74°F). Maximums can reach 32°C (89°F) and minimums can be as low as 18°C (64°F). This mild climate makes Santiago an ideal destination for travelers seeking pleasant weather and enjoyable outdoor activities.

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 23°C (74°F), with highs reaching up to 32°C (89°F) and lows dropping to around 18°C (64°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 total precipitation amount is 30 mm (1.2 in) spread across 6 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 30 mm (1.2 inches) of precipitation spread over approximately 6 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 85%. With an average temperature of 23°C (74°F), this humidity feels like a thick, steamy blanket wrapping around you, making outdoor activities draining and sweaty, and leaving you longing for a cool breeze or a refreshing drink to ease the discomfort while traveling.

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 85%, 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 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 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 16, which falls under the extreme 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	23°C (74°F)	30 mm (1.2 inches)	85%	extreme
February Weather	24°C (75°F)	25 mm (1.0 inches)	85%	extreme
March Weather	24°C (75°F)	12 mm (0.5 inches)	86%	extreme
April Weather	22°C (72°F)	3 mm (0.1 inches)	88%	extreme
May Weather	20°C (68°F)	1 mm (0.0 inches)	85%	extreme
June Weather	18°C (66°F)	1 mm (0.0 inches)	78%	very high
July Weather	18°C (64°F)	1 mm (0.0 inches)	75%	very high
August Weather	18°C (64°F)	0 mm (0.0 inches)	73%	extreme
September Weather	18°C (65°F)	0 mm (0.0 inches)	74%	extreme
October Weather	19°C (67°F)	1 mm (0.0 inches)	78%	extreme
November Weather	20°C (69°F)	1 mm (0.0 inches)	82%	extreme
December Weather	22°C (71°F)	4 mm (0.2 inches)	83%	extreme