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December Weather in Las Arenitas, Mexico

Last updated: August 27, 2025

In Las Arenitas, Mexico, the average temperature in December reaches a comfortable 21°C (71°F). Expect pleasant days with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 29°C (84°F). With an average humidity of 72%, the climate feels warm yet refreshing. Don’t forget your umbrella, as you may encounter about 11 mm (0.4 in) of precipitation over just 1 day this month!

December Temperature in Las Arenitas

In December in Las Arenitas, the average temperature is 21°C (71°F), with maximums reaching 29°C (84°F) and minimums dipping as low as 14°C (58°F). This mild climate makes it an ideal time for travelers to explore and enjoy outdoor activities in Las Arenitas.

December Weather in Las Arenitas: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Las Arenitas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Las Arenitas, December typically has an average temperature of 21°C (71°F), with highs reaching up to 29°C (84°F) and lows dropping to around 14°C (58°F).
JanFebMarAprMayJunJulAugSepOctNovDec686869737781858584837771
Data source: Temperature data for Las Arenitas 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 Las Arenitas

In Las Arenitas in December, the precipitation amount is 11 mm (0.4 in) over the course of one day.

December Precipitation Trends in Las Arenitas

The chart displays monthly precipitation patterns in Las Arenitas, 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 Las Arenitas, December typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec5191002045153152453811
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Las Arenitas

In Las Arenitas in December, humidity is 72%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, creating a thick, sultry atmosphere that can be quite heavy for traveling.

December Average Humidity in Las Arenitas

This chart illustrates the average monthly humidity levels in Las Arenitas, 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 Las Arenitas is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%67%62%58%59%64%74%78%78%75%74%72%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Las Arenitas

In Las Arenitas in December, 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 Las Arenitas, you can refer to this Hourly UV Index in Las Arenitas.

Maximum UV Index Levels in Las Arenitas for December

The chart shows the monthly maximum UV Index (UVI) for Las Arenitas 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 Las Arenitas typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec79111212121212121086
Data source: Las Arenitas 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 Las Arenitas Compares to Other Months

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

This table compares monthly weather conditions in Las Arenitas, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)5 mm (0.2 inches)70%high
February Weather20°C (68°F)19 mm (0.7 inches)67%very high
March Weather21°C (69°F)1 mm (0.0 inches)62%extreme
April Weather23°C (73°F)0 mm (0.0 inches)58%extreme
May Weather25°C (78°F)0 mm (0.0 inches)59%extreme
June Weather27°C (82°F)20 mm (0.8 inches)64%extreme
July Weather29°C (85°F)45 mm (1.8 inches)74%extreme
August Weather30°C (85°F)153 mm (6.0 inches)78%extreme
September Weather29°C (84°F)152 mm (6.0 inches)78%extreme
October Weather28°C (83°F)45 mm (1.8 inches)75%very high
November Weather25°C (77°F)38 mm (1.5 inches)74%very high
December Weather21°C (71°F)11 mm (0.4 inches)72%high

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