nomadseason

December Weather in Merinos, Uruguay

Last updated: August 28, 2025

In Merinos, Uruguay, the average temperature in December hovers around 23°C (74°F). However, be prepared for temperature variations, as it can dip to a chilly 8°C (46°F) or soar up to a sizzling 37°C (99°F). Expect 88 mm (3.5 in) of precipitation spread over 5 days, along with an average humidity of 66%. Enjoy the diverse weather while exploring this vibrant locale!

December Temperature in Merinos

In December in Merinos, 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 Merinos: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Merinos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merinos, 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).
JanFebMarAprMayJunJulAugSepOctNovDec767470665854535559647073
Data source: Temperature data for Merinos 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 Merinos

In Merinos in December, the precipitation amount is 88 mm (3.5 in) over the course of 5 days.

December Precipitation Trends in Merinos

The chart displays monthly precipitation patterns in Merinos, 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 Merinos, December typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec1281077894106125751041261268188
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Merinos

In Merinos in December humidity is 66%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making outdoor activities slightly uncomfortable but still enjoyable for travelers who are properly hydrated and prepared for the moist conditions.

December Average Humidity in Merinos

This chart illustrates the average monthly humidity levels in Merinos, 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 Merinos is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%64%70%80%85%82%72%67%71%69%65%66%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Merinos

In Merinos 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 Merinos, you can check here.

Maximum UV Index Levels in Merinos for December

The chart shows the monthly maximum UV Index (UVI) for Merinos 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 Merinos typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151312854468111314
Data source: Merinos 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 Merinos Compares to Other Months

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

This table compares monthly weather conditions in Merinos, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)128 mm (5.0 inches)58%extreme
February Weather23°C (74°F)107 mm (4.2 inches)64%extreme
March Weather21°C (71°F)78 mm (3.1 inches)70%extreme
April Weather19°C (66°F)94 mm (3.7 inches)80%very high
May Weather14°C (58°F)106 mm (4.2 inches)84%moderate
June Weather12°C (55°F)125 mm (4.9 inches)82%moderate
July Weather12°C (53°F)75 mm (3.0 inches)72%moderate
August Weather13°C (56°F)104 mm (4.1 inches)67%high
September Weather15°C (60°F)126 mm (5.0 inches)71%very high
October Weather18°C (64°F)126 mm (5.0 inches)69%extreme
November Weather21°C (70°F)81 mm (3.2 inches)65%extreme
December Weather23°C (74°F)88 mm (3.5 inches)66%extreme

Compare Merinos's Climate with Cities Worldwide