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January Weather in Santo Tomas, Mexico

Last updated: August 27, 2025

In January, the average temperature in Santo Tomas, Mexico is a pleasant 18°C (65°F), with minimums dipping to 8°C (46°F) and maximums reaching up to 30°C (86°F). You can expect approximately 80 mm (3.2 in) of precipitation over 13 days, coupled with a fairly high average humidity of 84%. Perfect for those who enjoy a mild climate with a touch of moisture!

January Temperature in Santo Tomas

In January in Santo Tomas, the average temperature is 18°C (65°F), with maximums reaching up to 30°C (86°F) and minimums dropping as low as 8°C (46°F). This mild climate makes Santo Tomas an ideal destination for travelers looking to enjoy pleasant outdoor activities.

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 18°C (65°F), with highs reaching up to 30°C (86°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec656769747673727373726866
Data source: Temperature data for Santo Tomas generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Santo Tomas

In Santo Tomas in January, the precipitation amount is 80 mm (3.2 in) spread over 13 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 80 mm (3.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec8047467920835917023528529214773
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Santo Tomas

In Santo Tomas in January, humidity is 84%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and slightly uncomfortable as the air clings to your skin and limits your breath.

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 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%73%59%53%54%55%61%71%77%78%82%86%
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 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141414141413109
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.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)80 mm (3.2 inches)84%very high
February Weather20°C (67°F)47 mm (1.9 inches)73%extreme
March Weather21°C (69°F)46 mm (1.8 inches)59%extreme
April Weather23°C (75°F)79 mm (3.1 inches)52%extreme
May Weather24°C (76°F)208 mm (8.2 inches)53%extreme
June Weather23°C (74°F)359 mm (14.1 inches)55%extreme
July Weather22°C (73°F)170 mm (6.7 inches)61%extreme
August Weather23°C (73°F)235 mm (9.2 inches)71%extreme
September Weather23°C (73°F)285 mm (11.2 inches)77%extreme
October Weather22°C (72°F)292 mm (11.5 inches)78%extreme
November Weather20°C (69°F)147 mm (5.8 inches)82%very high
December Weather19°C (66°F)73 mm (2.9 inches)86%very high

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