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December Weather in Rivera, Uruguay

Last updated: August 28, 2025

In December, the average temperature in Rivera, Uruguay is a pleasant 23°C (74°F). Expect to experience a range of temperatures, with a minimum of 8°C (46°F) and a maximum soaring to 37°C (99°F). During this month, precipitation averages 54 mm (2.1 in) over approximately 6 days, contributing to an average humidity level of 73%. Enjoy the warm and slightly humid weather while exploring all that this charming destination has to offer!

December Temperature in Rivera

In December in Rivera, the average temperature is 23°C (74°F), with maximums reaching 37°C (99°F) and minimums dropping as low as 8°C (46°F). This makes it an ideal time for travelers to experience a pleasant mix of warm days and cooler evenings.

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

The chart illustrates December temperature patterns in Rivera, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rivera, December typically has an average temperature of 23°C (74°F), with highs reaching up to 37°C (99°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec767471675956545661657074
Data source: Temperature data for Rivera 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 Rivera

In Rivera in December, the total precipitation amount is 54 mm (2.1 in) over the course of 6 days.

December Precipitation Trends in Rivera

The chart displays monthly precipitation patterns in Rivera, 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 Rivera, December typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec152108981051381138910917414510654
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Rivera

In Rivera in December, humidity is 73%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket, making traveling a bit sweaty and heavy, but still pleasant if you stay hydrated and take breaks in the shade.

December Average Humidity in Rivera

This chart illustrates the average monthly humidity levels in Rivera, 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 Rivera is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec64%58%68%79%79%78%70%55%62%64%64%73%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Rivera

In Rivera 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 Rivera.

Maximum UV Index Levels in Rivera for December

The chart shows the monthly maximum UV Index (UVI) for Rivera 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 Rivera typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151412954579121415
Data source: Rivera 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 Rivera Compares to Other Months

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

This table compares monthly weather conditions in Rivera, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (76°F)152 mm (6.0 inches)63%extreme
February Weather24°C (75°F)108 mm (4.2 inches)58%extreme
March Weather22°C (71°F)97 mm (3.8 inches)68%extreme
April Weather19°C (67°F)105 mm (4.1 inches)78%very high
May Weather15°C (59°F)138 mm (5.4 inches)79%moderate
June Weather13°C (56°F)113 mm (4.5 inches)78%moderate
July Weather12°C (54°F)89 mm (3.5 inches)70%moderate
August Weather14°C (57°F)109 mm (4.3 inches)55%high
September Weather16°C (61°F)173 mm (6.8 inches)62%very high
October Weather18°C (65°F)145 mm (5.7 inches)64%extreme
November Weather21°C (70°F)106 mm (4.2 inches)64%extreme
December Weather23°C (74°F)54 mm (2.1 inches)73%extreme

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