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December Weather in Castro Barros, Argentina

Last updated: August 22, 2025

In Castro Barros, Argentina, the average temperature in December hovers around 28°C (83°F). However, expect a wide range with minimums dipping to 12°C (55°F) and maximums soaring to 46°C (115°F). The region experiences about 66 mm (2.6 in) of precipitation over 9 days, accompanied by an average humidity level of 49%.

December Temperature in Castro Barros

In December in Castro Barros, the average temperature is 28°C (83°F). Maximum temperatures can reach 46°C (115°F), while minimums can drop as low as 12°C (55°F). Make sure to pack accordingly to enjoy your travel experience comfortably!

December Weather in Castro Barros: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Castro Barros, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castro Barros, December typically has an average temperature of 28°C (83°F), with highs reaching up to 46°C (115°F) and lows dropping to around 12°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec848177716255556168747983
Data source: Temperature data for Castro Barros 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 Castro Barros

In Castro Barros in December, the precipitation amount is 66 mm (2.6 in) over the course of 9 days.

December Precipitation Trends in Castro Barros

The chart displays monthly precipitation patterns in Castro Barros, 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 Castro Barros, December typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec836171693176125226766
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Castro Barros

In Castro Barros in December humidity is 49%. With an average temperature of 28°C (83°F), this humidity feels like a warm, inviting embrace, making it quite pleasant for traveling, although visitors may feel a bit sticky during the midday heat.

December Average Humidity in Castro Barros

This chart illustrates the average monthly humidity levels in Castro Barros, 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 Castro Barros is approximately 49%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec49%54%57%73%75%67%55%43%45%41%51%49%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Castro Barros

In Castro Barros 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 Castro Barros.

Maximum UV Index Levels in Castro Barros for December

The chart shows the monthly maximum UV Index (UVI) for Castro Barros 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 Castro Barros typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312964579121415
Data source: Castro Barros 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 Castro Barros Compares to Other Months

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

This table compares monthly weather conditions in Castro Barros, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather29°C (84°F)83 mm (3.3 inches)49%extreme
February Weather27°C (81°F)61 mm (2.4 inches)54%extreme
March Weather25°C (77°F)71 mm (2.8 inches)57%extreme
April Weather22°C (71°F)69 mm (2.7 inches)73%very high
May Weather17°C (62°F)31 mm (1.2 inches)75%high
June Weather13°C (56°F)7 mm (0.3 inches)67%moderate
July Weather13°C (55°F)6 mm (0.2 inches)54%moderate
August Weather16°C (61°F)1 mm (0.0 inches)43%high
September Weather20°C (68°F)25 mm (1.0 inches)45%very high
October Weather23°C (75°F)22 mm (0.9 inches)41%extreme
November Weather26°C (79°F)66 mm (2.6 inches)51%extreme
December Weather28°C (83°F)66 mm (2.6 inches)49%extreme

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