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December Weather in Rio Mayo, Argentina

Last updated: August 22, 2025

In December, the average temperature in Rio Mayo, Argentina hovers around 17°C (62°F). Expect nighttime lows of 3°C (38°F) and daytime highs reaching up to 34°C (94°F). With an average humidity of 74% and a modest precipitation amount of 8 mm (0.3 in) over just 2 days, it's a season of mild warmth and occasional showers.

December Temperature in Rio Mayo

In December in Rio Mayo, the average temperature is 17°C (62°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop as low as 3°C (38°F). Be prepared for a range of weather conditions when traveling during this month.

December Weather in Rio Mayo: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Rio Mayo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Mayo, December typically has an average temperature of 17°C (62°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec626458514438384246515762
Data source: Temperature data for Rio Mayo 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 Rio Mayo

In Rio Mayo in December, the precipitation amount is 8 mm (0.3 in) over the course of 2 days.

December Precipitation Trends in Rio Mayo

The chart displays monthly precipitation patterns in Rio Mayo, 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 Rio Mayo, December typically receives around 8 mm (0.3 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec11102837263627201416148
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Rio Mayo

In Rio Mayo in December, humidity is 74%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket enveloping you, making travel slightly uncomfortable as it can cause perspiration and a heavy feeling in the air, especially during outdoor activities.

December Average Humidity in Rio Mayo

This chart illustrates the average monthly humidity levels in Rio Mayo, 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 Rio Mayo is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%77%75%84%89%91%90%90%85%80%73%74%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Rio Mayo

In Rio Mayo in December, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Rio Mayo.

Maximum UV Index Levels in Rio Mayo for December

The chart shows the monthly maximum UV Index (UVI) for Rio Mayo 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 Rio Mayo typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1311853224681113
Data source: Rio Mayo 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 Rio Mayo Compares to Other Months

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

This table compares monthly weather conditions in Rio Mayo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (62°F)11 mm (0.4 inches)70%extreme
February Weather18°C (64°F)10 mm (0.4 inches)77%extreme
March Weather14°C (58°F)28 mm (1.1 inches)75%very high
April Weather11°C (51°F)37 mm (1.4 inches)84%moderate
May Weather7°C (44°F)26 mm (1.0 inches)89%moderate
June Weather3°C (38°F)36 mm (1.4 inches)90%low
July Weather3°C (38°F)27 mm (1.1 inches)90%low
August Weather6°C (42°F)20 mm (0.8 inches)90%moderate
September Weather8°C (46°F)14 mm (0.6 inches)85%high
October Weather10°C (51°F)16 mm (0.6 inches)80%very high
November Weather14°C (58°F)14 mm (0.5 inches)73%extreme
December Weather17°C (62°F)8 mm (0.3 inches)74%extreme

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