January Weather in Santo Tomas, Mexico

Last updated: August 27, 2025

In Santo Tomas, Mexico, the average temperature in January hovers around 6°C (43°F). Expect a range from a chilly minimum of -8°C (19°F) to a pleasantly warm maximum of 22°C (73°F). With average humidity at 78%, you may want to pack accordingly. Additionally, be prepared for 13 mm (0.5 in) of precipitation over 2 days, ensuring you stay dry during your visit!

January Temperature in Santo Tomas

In January in Santo Tomas, the average temperature is 6°C (43°F), with a maximum that can reach 22°C (73°F) and a minimum that can drop as low as -8°C (19°F). Be prepared for a wide range of temperatures when traveling during this month in Santo Tomas.

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 6°C (43°F), with highs reaching up to 22°C (73°F) and lows dropping to around -8°C (19°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 13 mm (0.5 in) over a span of 2 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 13 mm (0.5 inches) of precipitation spread over approximately 2 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 78%. With an average temperature of 6°C (43°F), this humidity feels like a chilly dampness that seeps into your bones, making it essential to dress warmly while exploring the sights.

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 78%, 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 is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Santo Tomas, you can refer to this Hourly UV Index in Santo Tomas.

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 6, which falls under the high 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	6°C (43°F)	13 mm (0.5 inches)	78%	high
February Weather	8°C (46°F)	15 mm (0.6 inches)	69%	very high
March Weather	11°C (52°F)	16 mm (0.6 inches)	63%	extreme
April Weather	15°C (59°F)	2 mm (0.1 inches)	49%	extreme
May Weather	18°C (65°F)	6 mm (0.2 inches)	39%	extreme
June Weather	22°C (71°F)	30 mm (1.2 inches)	36%	extreme
July Weather	19°C (67°F)	190 mm (7.5 inches)	60%	extreme
August Weather	19°C (66°F)	151 mm (5.9 inches)	78%	extreme
September Weather	17°C (63°F)	76 mm (3.0 inches)	82%	extreme
October Weather	15°C (59°F)	30 mm (1.2 inches)	76%	very high
November Weather	11°C (51°F)	21 mm (0.8 inches)	80%	very high
December Weather	6°C (44°F)	16 mm (0.6 inches)	85%	high