January Weather in Santo Tomas, Peru

Last updated: August 27, 2025

In January, the average temperature in Santo Tomas, Peru hovers around 8°C (46°F), with temperatures ranging from a brisk -3°C (26°F) at the minimum to a mild 18°C (65°F) at the maximum. Expect considerable precipitation, averaging 213 mm (8.4 in) over 24 days, coupled with a high humidity level of 92%. Be prepared for a cool and damp experience!

January Temperature in Santo Tomas

In January in Santo Tomas, the average temperature is 8°C (46°F), with a maximum reaching 18°C (65°F) and a minimum dipping as low as -3°C (26°F). Travelers should be prepared for a range of weather conditions, packing accordingly for both mild days and chilly evenings.

January Weather in Santo Tomas: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Santo Tomas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Tomas, January typically has an average temperature of 8°C (46°F), with highs reaching up to 18°C (65°F) and lows dropping to around -3°C (26°F).

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

January Precipitation in Santo Tomas

In Santo Tomas in January, the precipitation amount is 213 mm (8.4 in) over a span of 24 days.

January Precipitation Trends in Santo Tomas

The chart displays monthly precipitation patterns in Santo Tomas, 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 Santo Tomas, January typically receives around 213 mm (8.4 inches) of precipitation spread over approximately 24 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Santo Tomas

In Santo Tomas in January, humidity is 92%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that settles deep into your bones, making outdoor adventures uncomfortable and necessitating extra layers to stay warm while you explore.

January Average Humidity in Santo Tomas

This chart illustrates the average monthly humidity levels in Santo Tomas, 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 Santo Tomas is approximately 92%, 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 Santo Tomas

In Santo Tomas in January, the maximum UV index reaches 21, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. You can find the hourly UV index in Santo Tomas to better plan your outdoor activities.

Maximum UV Index Levels in Santo Tomas for January

The chart shows the monthly maximum UV Index (UVI) for Santo Tomas 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 Santo Tomas typically reaches 21, which falls under the extreme exposure category.

Data source: Santo Tomas 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 Santo Tomas Compares to Other Months

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

This table compares monthly weather conditions in Santo Tomas, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	213 mm (8.4 inches)	92%	extreme
February Weather	8°C (46°F)	256 mm (10.1 inches)	93%	extreme
March Weather	8°C (46°F)	239 mm (9.4 inches)	92%	extreme
April Weather	7°C (45°F)	79 mm (3.1 inches)	91%	extreme
May Weather	6°C (43°F)	25 mm (1.0 inches)	87%	extreme
June Weather	5°C (42°F)	8 mm (0.3 inches)	76%	extreme
July Weather	5°C (42°F)	10 mm (0.4 inches)	57%	extreme
August Weather	6°C (44°F)	11 mm (0.4 inches)	51%	extreme
September Weather	8°C (46°F)	40 mm (1.6 inches)	67%	extreme
October Weather	8°C (47°F)	83 mm (3.3 inches)	77%	extreme
November Weather	9°C (48°F)	127 mm (5.0 inches)	85%	extreme
December Weather	8°C (47°F)	211 mm (8.3 inches)	90%	extreme