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December Weather in Santa Teresa, Mexico

Last updated: August 27, 2025

In December, the average temperature in Santa Teresa, Mexico hovers around 13°C (56°F), providing a cool yet comfortable climate. Expect a minimum drop to -5°C (23°F) and a warm peak of 27°C (81°F). During this month, the precipitation totals approximately 9 mm (0.4 in), typically spread over just 1 day, while average humidity levels are quite high at 87%.

December Temperature in Santa Teresa

In December in Santa Teresa, the average temperature is 13°C (56°F). The maximum can reach 27°C (81°F), while the minimum can dip as low as -5°C (23°F). This diverse temperature range suggests that travelers should prepare for both warm and chilly conditions during their visit.

December Weather in Santa Teresa: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Santa Teresa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Teresa, December typically has an average temperature of 13°C (56°F), with highs reaching up to 27°C (81°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec556064687270686967645956
Data source: Temperature data for Santa Teresa 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.

December Precipitation in Santa Teresa

In Santa Teresa in December, the precipitation amount is 9 mm (0.4 in) over the course of 1 day.

December Precipitation Trends in Santa Teresa

The chart displays monthly precipitation patterns in Santa Teresa, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Santa Teresa, December typically receives around 9 mm (0.4 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec111014114084694786481610
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Santa Teresa

In Santa Teresa in December humidity is 87%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it challenging to explore comfortably.

December Average Humidity in Santa Teresa

This chart illustrates the average monthly humidity levels in Santa Teresa, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Santa Teresa is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%69%65%64%75%78%67%64%82%86%87%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Santa Teresa

In Santa Teresa in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Santa Teresa.

Maximum UV Index Levels in Santa Teresa for December

The chart shows the monthly maximum UV Index (UVI) for Santa Teresa in December, 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 December, the maximum UV index in Santa Teresa typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec8111414151414141312108
Data source: Santa Teresa December 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 December Weather in Santa Teresa Compares to Other Months

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

This table compares monthly weather conditions in Santa Teresa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (55°F)11 mm (0.4 inches)75%very high
February Weather15°C (60°F)10 mm (0.4 inches)69%extreme
March Weather18°C (65°F)14 mm (0.5 inches)65%extreme
April Weather20°C (69°F)11 mm (0.4 inches)64%extreme
May Weather22°C (72°F)40 mm (1.6 inches)75%extreme
June Weather21°C (70°F)84 mm (3.3 inches)78%extreme
July Weather20°C (69°F)69 mm (2.7 inches)67%extreme
August Weather21°C (69°F)47 mm (1.9 inches)64%extreme
September Weather19°C (67°F)86 mm (3.4 inches)81%extreme
October Weather18°C (64°F)48 mm (1.9 inches)85%extreme
November Weather15°C (60°F)16 mm (0.6 inches)87%very high
December Weather13°C (56°F)9 mm (0.4 inches)87%very high

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