January Weather in San Antonio, Peru

Last updated: August 27, 2025

In San Antonio, Peru, the average temperature in January hovers around 26°C (79°F), offering a pleasant climate for outdoor activities. Expect minimum temperatures of 22°C (71°F) and a maximum that can soar to 35°C (94°F). However, be prepared for some rain, as the area receives an average precipitation of 275 mm (10.8 in) spread over 24 days. With an average humidity of 83%, the air will feel quite moist, reminding you of the beauty of tropical weather.

January Temperature in San Antonio

In January in San Antonio, the average temperature is 26°C (79°F), with maximums reaching up to 35°C (94°F) and minimums dropping to as low as 22°C (71°F). This pleasant climate makes it an excellent time for travelers to enjoy outdoor activities and explore the local attractions.

January Weather in San Antonio: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in San Antonio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Antonio, January typically has an average temperature of 26°C (79°F), with highs reaching up to 35°C (94°F) and lows dropping to around 22°C (71°F).

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

January Precipitation in San Antonio

In San Antonio in January, the total precipitation amount is 275 mm (10.8 in) over the course of 24 days.

January Precipitation Trends in San Antonio

The chart displays monthly precipitation patterns in San Antonio, 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 San Antonio, January typically receives around 275 mm (10.8 inches) of precipitation spread over approximately 24 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 San Antonio

In San Antonio in January, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

January Average Humidity in San Antonio

This chart illustrates the average monthly humidity levels in San Antonio, 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 San Antonio is approximately 83%, 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 San Antonio

In San Antonio in January, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in San Antonio.

Maximum UV Index Levels in San Antonio for January

The chart shows the monthly maximum UV Index (UVI) for San Antonio 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 San Antonio typically reaches 15, which falls under the extreme exposure category.

Data source: San Antonio 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 San Antonio Compares to Other Months

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

This table compares monthly weather conditions in San Antonio, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	275 mm (10.8 inches)	83%	extreme
February Weather	26°C (79°F)	278 mm (11.0 inches)	78%	extreme
March Weather	26°C (79°F)	322 mm (12.7 inches)	82%	extreme
April Weather	26°C (79°F)	322 mm (12.7 inches)	85%	extreme
May Weather	26°C (79°F)	242 mm (9.5 inches)	91%	extreme
June Weather	26°C (78°F)	184 mm (7.2 inches)	85%	extreme
July Weather	25°C (78°F)	149 mm (5.9 inches)	74%	extreme
August Weather	26°C (79°F)	120 mm (4.7 inches)	59%	extreme
September Weather	26°C (80°F)	170 mm (6.7 inches)	55%	extreme
October Weather	26°C (80°F)	202 mm (8.0 inches)	57%	extreme
November Weather	26°C (80°F)	239 mm (9.4 inches)	74%	extreme
December Weather	26°C (79°F)	320 mm (12.6 inches)	87%	extreme