nomadseason

December Weather in Bella Union, Uruguay

Last updated: August 28, 2025

The average temperature in Bella Union, Uruguay during December is a pleasant 25°C (77°F). However, be prepared for some variability as temperatures can dip to a low of 9°C (49°F) and soar to a high of 38°C (101°F). Expect about 70 mm (2.8 in) of precipitation spread over 5 days, and keep in mind that the average humidity sits at around 68%.

December Temperature in Bella Union

In December in Bella Union, the average temperature is 25°C (77°F). Maximums can reach 38°C (101°F), while minimums can drop to as low as 9°C (49°F). Pack accordingly for both warm days and cool evenings while enjoying your travels!

December Weather in Bella Union: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Bella Union, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bella Union, December typically has an average temperature of 25°C (77°F), with highs reaching up to 38°C (101°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec797774696157565964687377
Data source: Temperature data for Bella Union generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Bella Union

In Bella Union in December, the precipitation amount is 70 mm (2.8 in) over the course of 5 days.

December Precipitation Trends in Bella Union

The chart displays monthly precipitation patterns in Bella Union, 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 Bella Union, December typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec14595931211419864941331189970
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Bella Union

In Bella Union in December, humidity is 68%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace that can quickly become stifling for traveling, making outdoor activities feel more strenuous and the air thick and heavy.

December Average Humidity in Bella Union

This chart illustrates the average monthly humidity levels in Bella Union, 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 Bella Union is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%57%69%78%82%81%66%54%61%59%58%68%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Bella Union

In Bella Union 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 Bella Union, you can check here.

Maximum UV Index Levels in Bella Union for December

The chart shows the monthly maximum UV Index (UVI) for Bella Union 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 Bella Union typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151312964579121414
Data source: Bella Union 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 Bella Union Compares to Other Months

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

This table compares monthly weather conditions in Bella Union, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)144 mm (5.7 inches)59%extreme
February Weather25°C (78°F)95 mm (3.7 inches)56%extreme
March Weather23°C (74°F)93 mm (3.7 inches)69%extreme
April Weather21°C (69°F)121 mm (4.8 inches)78%very high
May Weather16°C (62°F)141 mm (5.5 inches)82%high
June Weather14°C (58°F)98 mm (3.9 inches)81%moderate
July Weather13°C (56°F)64 mm (2.5 inches)66%moderate
August Weather15°C (59°F)94 mm (3.7 inches)54%high
September Weather18°C (64°F)133 mm (5.2 inches)60%very high
October Weather20°C (68°F)118 mm (4.6 inches)59%extreme
November Weather23°C (73°F)99 mm (3.9 inches)57%extreme
December Weather25°C (77°F)70 mm (2.8 inches)68%extreme

Compare Bella Union's Climate with Cities Worldwide