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December Weather in San Bernardo, Argentina

Last updated: August 22, 2025

The average temperature in San Bernardo, Argentina during December is a warm 27°C (81°F), with fluctuations between a cool 13°C (56°F) and a scorching 43°C (109°F). Expect 77 mm (3.0 in) of precipitation spread over 6 days, contributing to an average humidity of 76%. Perfect for those who enjoy a tropical ambiance!

December Temperature in San Bernardo

In December in San Bernardo, the average temperature is 27°C (81°F), with maxima reaching up to 43°C (109°F) and minima dropping as low as 13°C (56°F). This makes San Bernardo a great destination for travelers seeking warm weather and a diverse range of outdoor activities.

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

The chart illustrates December temperature patterns in San Bernardo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Bernardo, December typically has an average temperature of 27°C (81°F), with highs reaching up to 43°C (109°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec827976716460596369737781
Data source: Temperature data for San Bernardo 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 Bernardo

In San Bernardo in December, the total precipitation amount is 77 mm (3.0 in) occurring over a span of 6 days.

December Precipitation Trends in San Bernardo

The chart displays monthly precipitation patterns in San Bernardo, 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 Bernardo, December typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec146891079278423136627912577
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Bernardo

In San Bernardo in December, humidity is 76%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel stifling and sweat-inducing, which can be challenging for traveling.

December Average Humidity in San Bernardo

This chart illustrates the average monthly humidity levels in San Bernardo, 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 Bernardo is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%65%69%78%84%70%51%36%45%46%61%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Bernardo

In San Bernardo in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Bernardo, you can check here.

Maximum UV Index Levels in San Bernardo for December

The chart shows the monthly maximum UV Index (UVI) for San Bernardo 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 Bernardo typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15141210756810131414
Data source: San Bernardo 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 Bernardo Compares to Other Months

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

This table compares monthly weather conditions in San Bernardo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather28°C (82°F)146 mm (5.7 inches)72%extreme
February Weather26°C (80°F)89 mm (3.5 inches)65%extreme
March Weather25°C (77°F)107 mm (4.2 inches)69%extreme
April Weather22°C (71°F)92 mm (3.6 inches)78%very high
May Weather18°C (64°F)78 mm (3.1 inches)84%high
June Weather16°C (60°F)42 mm (1.7 inches)70%moderate
July Weather15°C (59°F)31 mm (1.2 inches)51%high
August Weather17°C (63°F)36 mm (1.4 inches)36%very high
September Weather20°C (69°F)62 mm (2.4 inches)45%very high
October Weather23°C (73°F)79 mm (3.1 inches)46%extreme
November Weather25°C (77°F)125 mm (4.9 inches)61%extreme
December Weather27°C (81°F)77 mm (3.0 inches)76%extreme

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