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December Weather in Vallecillo, Mexico

Last updated: August 27, 2025

In Vallecillo, Mexico, the average temperature in December is a mild 17°C (62°F). However, be prepared for temperature fluctuations, as it can dip to a chilly 0°C (33°F) at times, while soaring up to a sweltering 37°C (98°F). Expect 18 mm (0.7 in) of rain over just 3 days, contributing to an average humidity of 89%, which may make the air feel quite muggy.

December Temperature in Vallecillo

In December in Vallecillo, the average temperature is 17°C (62°F). The maximum can reach 37°C (98°F), while the minimum can be as low as 0°C (33°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly!

December Weather in Vallecillo: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Vallecillo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vallecillo, December typically has an average temperature of 17°C (62°F), with highs reaching up to 37°C (98°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec596372778386888983756662
Data source: Temperature data for Vallecillo 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 Vallecillo

In Vallecillo in December, the precipitation amount is 18 mm (0.7 in) over a span of 3 days.

December Precipitation Trends in Vallecillo

The chart displays monthly precipitation patterns in Vallecillo, 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 Vallecillo, December typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec181128427253632299452018
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Vallecillo

In Vallecillo in December, humidity is 89%. With an average temperature of 17°C (62°F), this humidity feels like a warm, heavy blanket enveloping you, making every step feel sluggish and the air thick to breathe, which can be quite challenging for traveling.

December Average Humidity in Vallecillo

This chart illustrates the average monthly humidity levels in Vallecillo, 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 Vallecillo is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%74%75%74%79%77%64%61%77%83%85%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Vallecillo

In Vallecillo in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Vallecillo.

Maximum UV Index Levels in Vallecillo for December

The chart shows the monthly maximum UV Index (UVI) for Vallecillo 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 Vallecillo typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6910121212121211975
Data source: Vallecillo 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 Vallecillo Compares to Other Months

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

This table compares monthly weather conditions in Vallecillo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)18 mm (0.7 inches)83%high
February Weather17°C (64°F)11 mm (0.4 inches)74%very high
March Weather22°C (72°F)28 mm (1.1 inches)75%very high
April Weather25°C (78°F)42 mm (1.6 inches)74%extreme
May Weather28°C (83°F)72 mm (2.8 inches)79%extreme
June Weather30°C (86°F)53 mm (2.1 inches)77%extreme
July Weather31°C (88°F)63 mm (2.5 inches)64%extreme
August Weather31°C (89°F)22 mm (0.9 inches)61%extreme
September Weather28°C (83°F)99 mm (3.9 inches)77%extreme
October Weather24°C (76°F)45 mm (1.8 inches)83%very high
November Weather19°C (67°F)20 mm (0.8 inches)85%high
December Weather17°C (62°F)18 mm (0.7 inches)89%moderate

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