December Weather in San Pedro, Mexico

Last updated: August 27, 2025

In December, the average temperature in San Pedro, Mexico is a comfortable 19°C (67°F), with nighttime lows dipping to 10°C (50°F) and daytime highs reaching up to 29°C (85°F). Expect a modest precipitation of 18 mm (0.7 in) over just 1 day, accompanied by an average humidity of 72%, creating a pleasant atmosphere for outdoor activities.

December Temperature in San Pedro

In December in San Pedro, the average temperature is 19°C (67°F). The maximum can reach 29°C (85°F), and the minimum can be as low as 10°C (50°F). It's a great time to enjoy outdoor activities while packing for both warm and cooler conditions.

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 19°C (67°F), with highs reaching up to 29°C (85°F) and lows dropping to around 10°C (50°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 18 mm (0.7 in) over the course of 1 day.

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 18 mm (0.7 inches) of precipitation spread over approximately 1 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in San Pedro

In San Pedro in December, humidity is 72%. With an average temperature of 19°C (67°F), this humidity feels like a warm, damp blanket enveloping you, making outdoor activities a bit more challenging but also giving the air a refreshing quality that's invigorating for short excursions.

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 72%, 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 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in San Pedro, you can refer to this 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 6, which falls under the 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	18°C (64°F)	9 mm (0.3 inches)	69%	high
February Weather	18°C (65°F)	14 mm (0.5 inches)	66%	very high
March Weather	20°C (69°F)	2 mm (0.1 inches)	64%	extreme
April Weather	23°C (73°F)	0 mm (0.0 inches)	64%	extreme
May Weather	24°C (76°F)	0 mm (0.0 inches)	66%	extreme
June Weather	27°C (81°F)	7 mm (0.3 inches)	67%	extreme
July Weather	29°C (85°F)	17 mm (0.7 inches)	72%	extreme
August Weather	30°C (86°F)	56 mm (2.2 inches)	73%	extreme
September Weather	28°C (83°F)	113 mm (4.5 inches)	74%	extreme
October Weather	27°C (80°F)	10 mm (0.4 inches)	75%	very high
November Weather	23°C (74°F)	22 mm (0.9 inches)	73%	very high
December Weather	19°C (67°F)	18 mm (0.7 inches)	72%	high