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December Weather in Belen, United States

Last updated: June 24, 2025

In December, the average temperature in Belen, United States hovers around 3°C (38°F). Expect minimums dipping to -17°C (1°F) and maximums reaching up to 18°C (65°F). The region experiences an average precipitation of 11 mm (0.4 in) over about 3 days, coupled with a humidity level of 79%. Stay prepared for a brisk but varied climate!

December Temperature in Belen

In December in Belen, the average temperature is 3°C (38°F), with maximums reaching up to 18°C (65°F) and minimums dropping as low as -17°C (1°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both chilly and mild conditions.

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

The chart illustrates December temperature patterns in Belen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Belen, December typically has an average temperature of 3°C (38°F), with highs reaching up to 18°C (65°F) and lows dropping to around -17°C (1°F).
JanFebMarAprMayJunJulAugSepOctNovDec374251596978807972594838
Data source: Temperature data for Belen 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 Belen

In Belen in December, the precipitation amount is 11 mm (0.4 in) over the course of 3 days.

December Precipitation Trends in Belen

The chart displays monthly precipitation patterns in Belen, 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 Belen, December typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec15171214713231424231411
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Belen

In Belen in December, humidity is 79%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and urging you to seek shelter indoors to escape the cold, clammy air.

December Average Humidity in Belen

This chart illustrates the average monthly humidity levels in Belen, 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 Belen is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%79%66%60%57%55%57%65%72%78%81%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Belen

In Belen in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Belen for better planning.

Maximum UV Index Levels in Belen for December

The chart shows the monthly maximum UV Index (UVI) for Belen 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 Belen typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479111213121211864
Data source: Belen 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 Belen Compares to Other Months

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

This table compares monthly weather conditions in Belen, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)15 mm (0.6 inches)78%moderate
February Weather5°C (42°F)17 mm (0.7 inches)79%high
March Weather11°C (51°F)12 mm (0.5 inches)66%very high
April Weather15°C (60°F)14 mm (0.5 inches)60%extreme
May Weather20°C (69°F)7 mm (0.3 inches)57%extreme
June Weather26°C (78°F)13 mm (0.5 inches)55%extreme
July Weather27°C (80°F)23 mm (0.9 inches)56%extreme
August Weather26°C (79°F)14 mm (0.6 inches)65%extreme
September Weather22°C (73°F)23 mm (0.9 inches)72%extreme
October Weather15°C (59°F)23 mm (0.9 inches)78%very high
November Weather9°C (48°F)14 mm (0.5 inches)81%high
December Weather3°C (38°F)11 mm (0.4 inches)79%moderate

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