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December Weather in San Pedro, Mexico

Last updated: August 27, 2025

In San Pedro, Mexico, the average temperature in December hovers around 19°C (66°F), offering a pleasant climate for outdoor activities. Expect temperatures to vary, with a minimum of 6°C (42°F) and a maximum reaching up to 32°C (90°F). During this month, anticipate approximately 20 mm (0.8 in) of precipitation over just 2 days, while the average humidity remains at a comfortable 80%. Enjoy the diverse weather as you explore!

December Temperature in San Pedro

In December in San Pedro, the average temperature is 19°C (66°F). The maximum can reach 32°C (90°F), while the minimum can drop to as low as 6°C (42°F). This diverse temperature range makes San Pedro an ideal destination for travelers seeking both warm afternoons and cool evenings.

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 (66°F), with highs reaching up to 32°C (90°F) and lows dropping to around 6°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec646670768287858483817366
Data source: Temperature data for San Pedro 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 San Pedro

In San Pedro in December, the precipitation amount is 20 mm (0.8 in) over the course of 2 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 20 mm (0.8 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec1629111027117124103243920
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Pedro

In San Pedro in December humidity is 80%. With an average temperature of 19°C (66°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel more strenuous and sticky, which can ultimately dampen the experience of traveling.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%67%60%51%47%50%70%82%82%78%78%81%
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.
JanFebMarAprMayJunJulAugSepOctNovDec69101213121212121076
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.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)16 mm (0.6 inches)74%high
February Weather19°C (66°F)29 mm (1.2 inches)67%very high
March Weather21°C (71°F)11 mm (0.4 inches)60%very high
April Weather25°C (77°F)1 mm (0.0 inches)51%extreme
May Weather28°C (82°F)0 mm (0.0 inches)47%extreme
June Weather30°C (87°F)27 mm (1.1 inches)50%extreme
July Weather29°C (85°F)117 mm (4.6 inches)70%extreme
August Weather29°C (85°F)124 mm (4.9 inches)81%extreme
September Weather28°C (83°F)103 mm (4.0 inches)82%extreme
October Weather27°C (81°F)24 mm (0.9 inches)78%very high
November Weather23°C (74°F)39 mm (1.5 inches)78%high
December Weather19°C (66°F)20 mm (0.8 inches)80%high

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