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December Weather in Shelby, Peru

Last updated: August 27, 2025

In December, the average temperature in Shelby, Peru hovers around 6°C (44°F), with extremes dipping to a chilly -3°C (27°F) and reaching a comfortable 17°C (63°F). This month sees an average precipitation of 187 mm (7.3 in) spread across 28 days, contributing to a notable 90% humidity level. Prepare for a mix of wet and cool weather as you explore!

December Temperature in Shelby

In December in Shelby, the average temperature is 6°C (44°F). The maximum can reach 17°C (63°F), while the minimum can dip as low as -3°C (27°F). This varied climate makes Shelby an intriguing destination for travelers seeking both cool and mild weather experiences.

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

The chart illustrates December temperature patterns in Shelby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shelby, December typically has an average temperature of 6°C (44°F), with highs reaching up to 17°C (63°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec434343424140393940424343
Data source: Temperature data for Shelby 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 Shelby

In Shelby in December, the precipitation amount is 187 mm (7.3 in) over the course of 28 days.

December Precipitation Trends in Shelby

The chart displays monthly precipitation patterns in Shelby, 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 Shelby, December typically receives around 187 mm (7.3 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec1802012061067231233667115152187
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Shelby

In Shelby in December humidity is 90%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that clings to your skin, making outdoor excursions uncomfortable and requiring extra layers to stay warm and dry while exploring.

December Average Humidity in Shelby

This chart illustrates the average monthly humidity levels in Shelby, 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 Shelby is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%91%89%85%65%47%38%40%56%76%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Shelby

In Shelby in December, the maximum UV index is 18, which corresponds to an extreme exposure category. This means that the time to burn is just 10 minutes. For more detailed information, you can check the hourly UV index in Shelby.

Maximum UV Index Levels in Shelby for December

The chart shows the monthly maximum UV Index (UVI) for Shelby 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 Shelby typically reaches 18, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec202020181513141517191918
Data source: Shelby 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 Shelby Compares to Other Months

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

This table compares monthly weather conditions in Shelby, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)180 mm (7.1 inches)91%extreme
February Weather6°C (43°F)201 mm (7.9 inches)90%extreme
March Weather6°C (43°F)206 mm (8.1 inches)91%extreme
April Weather6°C (42°F)106 mm (4.2 inches)89%extreme
May Weather5°C (42°F)71 mm (2.8 inches)85%extreme
June Weather5°C (40°F)31 mm (1.2 inches)65%extreme
July Weather4°C (39°F)23 mm (0.9 inches)47%extreme
August Weather4°C (40°F)36 mm (1.4 inches)38%extreme
September Weather5°C (41°F)67 mm (2.7 inches)40%extreme
October Weather5°C (42°F)115 mm (4.5 inches)56%extreme
November Weather6°C (43°F)152 mm (6.0 inches)76%extreme
December Weather6°C (44°F)187 mm (7.3 inches)90%extreme

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