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December Weather in Arroyito, Argentina

Last updated: August 22, 2025

In December, the average temperature in Arroyito, Argentina hovers around 25°C (77°F). However, don’t be surprised by the extremes—temperatures can dip as low as 10°C (50°F) and soar to a sizzling 41°C (106°F). During this time, expect about 108 mm (4.2 in) of rainfall spread over 9 days, contributing to an average humidity level of 53%.

December Temperature in Arroyito

In December in Arroyito, the average temperature is 25°C (77°F). Maximum temperatures can reach 41°C (106°F), while minimums can drop as low as 10°C (50°F). It’s advisable to pack for both warm and cool conditions when traveling during this time.

December Weather in Arroyito: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Arroyito, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arroyito, December typically has an average temperature of 25°C (77°F), with highs reaching up to 41°C (106°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec787571675953525762677377
Data source: Temperature data for Arroyito 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 Arroyito

In Arroyito in December, the precipitation amount is 108 mm (4.2 in) spread over 9 days.

December Precipitation Trends in Arroyito

The chart displays monthly precipitation patterns in Arroyito, 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 Arroyito, December typically receives around 108 mm (4.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec9988869258141410296595108
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Arroyito

In Arroyito in December, humidity is 53%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace, making travel pleasantly enjoyable but slightly sticky, prompting you to seek shade and stay hydrated as you explore the sights.

December Average Humidity in Arroyito

This chart illustrates the average monthly humidity levels in Arroyito, 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 Arroyito is approximately 53%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec48%54%59%77%82%74%55%48%53%45%53%53%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arroyito

In Arroyito 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 Arroyito, you can check here.

Maximum UV Index Levels in Arroyito for December

The chart shows the monthly maximum UV Index (UVI) for Arroyito 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 Arroyito typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312864569111414
Data source: Arroyito 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 Arroyito Compares to Other Months

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

This table compares monthly weather conditions in Arroyito, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)99 mm (3.9 inches)48%extreme
February Weather24°C (75°F)88 mm (3.5 inches)54%extreme
March Weather22°C (72°F)86 mm (3.4 inches)59%extreme
April Weather19°C (67°F)92 mm (3.6 inches)76%very high
May Weather15°C (59°F)58 mm (2.3 inches)82%high
June Weather12°C (53°F)14 mm (0.6 inches)74%moderate
July Weather11°C (52°F)14 mm (0.5 inches)55%moderate
August Weather14°C (57°F)10 mm (0.4 inches)48%high
September Weather17°C (62°F)29 mm (1.1 inches)53%very high
October Weather20°C (68°F)65 mm (2.6 inches)45%extreme
November Weather23°C (73°F)95 mm (3.7 inches)53%extreme
December Weather25°C (77°F)108 mm (4.2 inches)53%extreme

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