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December Weather in San Pedro, Argentina

Last updated: August 22, 2025

In December, the average temperature in San Pedro, Argentina hovers around 24°C (75°F). While the mercury can dip as low as 12°C (53°F), it may also rise to a sweltering 36°C (97°F). During this time, expect about 162 mm (6.4 in) of precipitation spread over 14 days, contributing to a humidity level of 85%.

December Temperature in San Pedro

In December in San Pedro, the average temperature is 24°C (75°F). Maximums can reach 36°C (97°F), and minimums can be as low as 12°C (53°F). This makes San Pedro an ideal destination for travelers looking to enjoy warm weather while still having the option for cooler excursions.

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 24°C (75°F), with highs reaching up to 36°C (97°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec757472686361606369707275
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 total precipitation amount is 162 mm (6.4 in) over the course of 14 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 162 mm (6.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec1721401531121901586773100196137162
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 85%. With an average temperature of 24°C (75°F), this humidity feels like walking through a warm, heavy blanket, making travel feel sluggish and draining as you navigate through the thick, muggy air.

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 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%74%72%78%82%78%73%59%62%65%76%85%
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 reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check 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 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15151310756810131515
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 Weather24°C (75°F)172 mm (6.8 inches)79%extreme
February Weather23°C (74°F)140 mm (5.5 inches)74%extreme
March Weather22°C (73°F)153 mm (6.0 inches)72%extreme
April Weather20°C (68°F)112 mm (4.4 inches)78%very high
May Weather17°C (63°F)190 mm (7.5 inches)82%high
June Weather16°C (61°F)158 mm (6.2 inches)78%moderate
July Weather15°C (60°F)67 mm (2.6 inches)73%high
August Weather17°C (63°F)73 mm (2.9 inches)58%very high
September Weather21°C (70°F)100 mm (3.9 inches)62%very high
October Weather21°C (70°F)196 mm (7.7 inches)65%extreme
November Weather22°C (72°F)137 mm (5.4 inches)76%extreme
December Weather24°C (75°F)162 mm (6.4 inches)85%extreme

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