December Weather in Arellano, Mexico

Last updated: August 27, 2025

In Arellano, Mexico, the average temperature in December hovers around 15°C (59°F). Expect a chilly minimum of -2°C (29°F), but it can also soar to a delightful 28°C (83°F). During this month, you can anticipate 7 mm (0.3 in) of precipitation spread over 1 day, with an average humidity of 81%. 🌦️

December Temperature in Arellano

In December in Arellano, the average temperature is 15°C (59°F). The maximum can reach 28°C (83°F), and the minimum can be as low as -2°C (29°F). It's advisable to pack layers to stay comfortable while exploring the diverse weather conditions during your travels.

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

The chart illustrates December temperature patterns in Arellano, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arellano, December typically has an average temperature of 15°C (59°F), with highs reaching up to 28°C (83°F) and lows dropping to around -2°C (29°F).

Data source: Temperature data for Arellano generated using information from the Copernicus Climate Change Service.

December Precipitation in Arellano

In Arellano in December, the precipitation amount is 7 mm (0.3 in) over the course of 1 day.

December Precipitation Trends in Arellano

The chart displays monthly precipitation patterns in Arellano, 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 Arellano, December typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Arellano

In Arellano in December humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.

December Average Humidity in Arellano

This chart illustrates the average monthly humidity levels in Arellano, 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 Arellano is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arellano

In Arellano 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 Arellano.

Maximum UV Index Levels in Arellano for December

The chart shows the monthly maximum UV Index (UVI) for Arellano 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 Arellano typically reaches 8, which falls under the very high exposure category.

Data source: Arellano 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 Arellano Compares to Other Months

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

This table compares monthly weather conditions in Arellano, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	15°C (58°F)	11 mm (0.4 inches)	74%	very high
February Weather	17°C (62°F)	10 mm (0.4 inches)	65%	extreme
March Weather	20°C (68°F)	5 mm (0.2 inches)	58%	extreme
April Weather	22°C (71°F)	3 mm (0.1 inches)	58%	extreme
May Weather	23°C (74°F)	19 mm (0.7 inches)	67%	extreme
June Weather	22°C (73°F)	125 mm (4.9 inches)	76%	extreme
July Weather	20°C (69°F)	157 mm (6.2 inches)	67%	extreme
August Weather	21°C (70°F)	108 mm (4.2 inches)	68%	extreme
September Weather	20°C (68°F)	125 mm (4.9 inches)	81%	extreme
October Weather	19°C (67°F)	43 mm (1.7 inches)	83%	extreme
November Weather	17°C (63°F)	14 mm (0.6 inches)	84%	very high
December Weather	15°C (59°F)	7 mm (0.3 inches)	81%	very high