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December Weather in Mendoza, Peru

Last updated: August 27, 2025

In Mendoza, Peru, the average temperature in December hovers around 16°C (61°F). Expect minimums of 8°C (47°F) and maximums reaching up to 25°C (77°F). Rain is not uncommon, with an average precipitation of 274 mm (10.8 in) spread over 29 days. The air is quite humid, with an average humidity level of 82%, so be prepared for a moist climate!

December Temperature in Mendoza

In December in Mendoza, the average temperature is 16°C (61°F). Maximums can reach 25°C (77°F) and minimums can be as low as 8°C (47°F). Overall, this mild weather makes Mendoza an ideal destination for outdoor activities and sightseeing during this time of year.

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

The chart illustrates December temperature patterns in Mendoza, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mendoza, December typically has an average temperature of 16°C (61°F), with highs reaching up to 25°C (77°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec606160595958565757596161
Data source: Temperature data for Mendoza 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 Mendoza

In Mendoza in December, the precipitation amount is 274 mm (10.8 in) spread over 29 days.

December Precipitation Trends in Mendoza

The chart displays monthly precipitation patterns in Mendoza, 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 Mendoza, December typically receives around 274 mm (10.8 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec23524627319913489686379208278274
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mendoza

In Mendoza in December humidity is 82%. With an average temperature of 16°C (61°F), this humidity feels like a heavy blanket enveloping you, making travel feel a bit sluggish and requiring frequent breaks to hydrate and cool down.

December Average Humidity in Mendoza

This chart illustrates the average monthly humidity levels in Mendoza, 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 Mendoza is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%81%88%85%78%62%44%38%42%58%69%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mendoza

In Mendoza in December, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Mendoza.

Maximum UV Index Levels in Mendoza for December

The chart shows the monthly maximum UV Index (UVI) for Mendoza 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 Mendoza typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec171818181513131416171616
Data source: Mendoza 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 Mendoza Compares to Other Months

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

This table compares monthly weather conditions in Mendoza, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (60°F)235 mm (9.2 inches)83%extreme
February Weather16°C (61°F)246 mm (9.7 inches)81%extreme
March Weather15°C (60°F)273 mm (10.7 inches)88%extreme
April Weather15°C (59°F)199 mm (7.8 inches)85%extreme
May Weather15°C (59°F)134 mm (5.3 inches)78%extreme
June Weather14°C (58°F)89 mm (3.5 inches)62%extreme
July Weather13°C (56°F)68 mm (2.7 inches)44%extreme
August Weather14°C (57°F)63 mm (2.5 inches)38%extreme
September Weather14°C (58°F)79 mm (3.1 inches)42%extreme
October Weather15°C (59°F)208 mm (8.2 inches)58%extreme
November Weather16°C (61°F)278 mm (10.9 inches)69%extreme
December Weather16°C (61°F)274 mm (10.8 inches)82%extreme

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