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December Weather in Rioja, Peru

Last updated: August 27, 2025

In Rioja, Peru, the average temperature in December hovers around 20°C (68°F), with comfortable highs reaching up to 28°C (82°F) and lows dipping to 13°C (56°F). Prepare for a wet month, as 196 mm (7.7 in) of precipitation typically falls over 29 days, and expect a notable average humidity of 89%.

December Temperature in Rioja

In December in Rioja, the average temperature is 20°C (68°F). Maximums can reach 28°C (82°F), while minimums can drop to as low as 13°C (56°F). This pleasant climate makes it an ideal time for outdoor activities and exploration.

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

The chart illustrates December temperature patterns in Rioja, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rioja, December typically has an average temperature of 20°C (68°F), with highs reaching up to 28°C (82°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec676867676766656667686868
Data source: Temperature data for Rioja 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 Rioja

In Rioja in December, the total precipitation amount is 196 mm (7.7 in) spread over 29 days.

December Precipitation Trends in Rioja

The chart displays monthly precipitation patterns in Rioja, 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 Rioja, December typically receives around 196 mm (7.7 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec230197255207159104805163161231196
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Rioja

In Rioja in December, humidity is 89%. With an average temperature of 20°C (68°F), this humidity feels like walking through a warm, damp blanket that clings to your skin, making each step feel heavier and the air thick with moisture, which can be quite uncomfortable for traveling.

December Average Humidity in Rioja

This chart illustrates the average monthly humidity levels in Rioja, 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 Rioja is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%76%81%86%86%70%47%37%42%62%76%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Rioja

In Rioja 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 Rioja.

Maximum UV Index Levels in Rioja for December

The chart shows the monthly maximum UV Index (UVI) for Rioja 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 Rioja typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161718171412121315161515
Data source: Rioja 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 Rioja Compares to Other Months

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

This table compares monthly weather conditions in Rioja, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (67°F)230 mm (9.1 inches)80%extreme
February Weather20°C (68°F)197 mm (7.8 inches)76%extreme
March Weather19°C (67°F)255 mm (10.0 inches)81%extreme
April Weather19°C (67°F)207 mm (8.1 inches)86%extreme
May Weather19°C (67°F)159 mm (6.3 inches)86%extreme
June Weather19°C (66°F)104 mm (4.1 inches)70%extreme
July Weather18°C (65°F)80 mm (3.1 inches)47%extreme
August Weather19°C (66°F)51 mm (2.0 inches)37%extreme
September Weather19°C (67°F)63 mm (2.5 inches)42%extreme
October Weather20°C (68°F)161 mm (6.3 inches)62%extreme
November Weather20°C (68°F)231 mm (9.1 inches)76%extreme
December Weather20°C (68°F)196 mm (7.7 inches)89%extreme

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