December Weather in San Pedro, Mexico

Last updated: August 27, 2025

In December, the average temperature in San Pedro, Mexico hovers around 14°C (57°F). Expect a range from a chilly -1°C (31°F) to a balmy 26°C (80°F). With only 5 mm (0.2 in) of precipitation throughout the month and an average humidity of 81%, it's a time of refreshing air and comfortable days.

December Temperature in San Pedro

In December in San Pedro, the average temperature is 14°C (57°F), with maximums reaching 26°C (80°F) and minimums dropping as low as -1°C (31°F). It’s advisable to pack for both warm days and cool nights when traveling during this time.

December Weather in San Pedro: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Pedro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Pedro, December typically has an average temperature of 14°C (57°F), with highs reaching up to 26°C (80°F) and lows dropping to around -1°C (31°F).

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

December Precipitation in San Pedro

In San Pedro in December, the precipitation amount is 5 mm (0.2 in) during a span of 0 days.

December Precipitation Trends in San Pedro

The chart displays monthly precipitation patterns in San Pedro, 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 San Pedro, December typically receives around 5 mm (0.2 inches) of precipitation spread over approximately 0 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 San Pedro

In San Pedro in December, humidity is 81%. With an average temperature of 14°C (57°F), this humidity feels like a warm, dense blanket that clings to your skin, making outdoor exploration a bit heavier and more tiring.

December Average Humidity in San Pedro

This chart illustrates the average monthly humidity levels in San Pedro, 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 San Pedro 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 San Pedro

In San Pedro 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 San Pedro.

Maximum UV Index Levels in San Pedro for December

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

Data source: San Pedro 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 San Pedro Compares to Other Months

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

This table compares monthly weather conditions in San Pedro, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	7 mm (0.3 inches)	74%	very high
February Weather	16°C (60°F)	8 mm (0.3 inches)	65%	extreme
March Weather	18°C (65°F)	13 mm (0.5 inches)	58%	extreme
April Weather	20°C (68°F)	14 mm (0.6 inches)	58%	extreme
May Weather	21°C (70°F)	48 mm (1.9 inches)	67%	extreme
June Weather	19°C (67°F)	162 mm (6.4 inches)	76%	extreme
July Weather	18°C (65°F)	142 mm (5.6 inches)	67%	extreme
August Weather	18°C (65°F)	136 mm (5.3 inches)	68%	extreme
September Weather	18°C (64°F)	172 mm (6.8 inches)	81%	extreme
October Weather	17°C (63°F)	66 mm (2.6 inches)	83%	extreme
November Weather	15°C (59°F)	24 mm (0.9 inches)	84%	very high
December Weather	14°C (57°F)	5 mm (0.2 inches)	81%	very high