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December Weather in Santa Catalina, Argentina

Last updated: August 22, 2025

In December, the average temperature in Santa Catalina, Argentina hovers around 12°C (54°F). Expect a minimum of 1°C (34°F) and a maximum of 26°C (79°F) during this time. The area typically experiences about 115 mm (4.5 in) of precipitation spread over 19 days, resulting in a humidity level of 76%. Be prepared for a mix of cool and warm days, along with a fair amount of rain!

December Temperature in Santa Catalina

In December in Santa Catalina, the average temperature is 12°C (54°F). Maximum temperatures can reach 26°C (79°F), while minimums can drop as low as 1°C (34°F). Overall, it's advisable to pack layers for your trip to Santa Catalina during this month to stay comfortable throughout the day.

December Weather in Santa Catalina: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Santa Catalina, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Catalina, December typically has an average temperature of 12°C (54°F), with highs reaching up to 26°C (79°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec535252504541414349545554
Data source: Temperature data for Santa Catalina 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 Santa Catalina

In Santa Catalina in December, the precipitation amount is 115 mm (4.5 in) over a span of 19 days.

December Precipitation Trends in Santa Catalina

The chart displays monthly precipitation patterns in Santa Catalina, 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 Santa Catalina, December typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec110123101192121102153115
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Santa Catalina

In Santa Catalina in December, humidity is 76%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities a bit uncomfortable and requiring frequent hydration while exploring.

December Average Humidity in Santa Catalina

This chart illustrates the average monthly humidity levels in Santa Catalina, 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 Santa Catalina is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%88%88%85%76%58%49%44%59%60%69%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Santa Catalina

In Santa Catalina in December, the maximum UV index reaches 19, which corresponds to an extreme exposure category. With a time to burn of just 10 minutes, it’s essential to take precautions. For detailed information, you can check the hourly UV index in Santa Catalina.

Maximum UV Index Levels in Santa Catalina for December

The chart shows the monthly maximum UV Index (UVI) for Santa Catalina 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 Santa Catalina typically reaches 19, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec19191714118101215181919
Data source: Santa Catalina 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 Santa Catalina Compares to Other Months

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

This table compares monthly weather conditions in Santa Catalina, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (53°F)110 mm (4.3 inches)85%extreme
February Weather11°C (53°F)123 mm (4.9 inches)88%extreme
March Weather11°C (52°F)101 mm (4.0 inches)88%extreme
April Weather10°C (50°F)19 mm (0.7 inches)85%extreme
May Weather7°C (45°F)2 mm (0.1 inches)76%extreme
June Weather5°C (41°F)1 mm (0.0 inches)58%very high
July Weather5°C (41°F)1 mm (0.1 inches)49%very high
August Weather6°C (44°F)1 mm (0.0 inches)43%extreme
September Weather10°C (50°F)10 mm (0.4 inches)59%extreme
October Weather12°C (54°F)21 mm (0.8 inches)60%extreme
November Weather13°C (55°F)53 mm (2.1 inches)69%extreme
December Weather12°C (54°F)115 mm (4.5 inches)76%extreme

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