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December Weather in Buellton, United States

Last updated: June 24, 2025

In December, the average temperature in Buellton, United States is a comfortable 14°C (57°F). You'll experience a minimum of 9°C (48°F) and a maximum of 23°C (73°F) throughout the month. With 69 mm (2.7 in) of precipitation spread over 6 days, the air remains pleasantly humid, boasting an average humidity of 76%.

December Temperature in Buellton

In December in Buellton, the average temperature is 14°C (57°F), with a maximum that can reach 23°C (73°F) and a minimum that can dip as low as 9°C (48°F). This pleasant range makes it a great time for outdoor exploration and enjoying the local scenery.

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

The chart illustrates December temperature patterns in Buellton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Buellton, December typically has an average temperature of 14°C (57°F), with highs reaching up to 23°C (73°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec565555565760636464646056
Data source: Temperature data for Buellton 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 Buellton

In Buellton in December, the precipitation amount is 69 mm (2.7 in) over a period of 6 days.

December Precipitation Trends in Buellton

The chart displays monthly precipitation patterns in Buellton, 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 Buellton, December typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec96788617101111102669
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Buellton

In Buellton in December humidity is 76%. With an average temperature of 14°C (57°F), this humidity feels like a warm blanket wrapped around you, creating a heavy atmosphere that can make outdoor activities feel sluggish and stifling, urging travelers to seek shade and refreshment more frequently.

December Average Humidity in Buellton

This chart illustrates the average monthly humidity levels in Buellton, 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 Buellton is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%83%80%76%75%74%75%72%70%70%74%77%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Buellton

In Buellton 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 Buellton for better planning.

Maximum UV Index Levels in Buellton for December

The chart shows the monthly maximum UV Index (UVI) for Buellton 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 Buellton typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121110754
Data source: Buellton 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 Buellton Compares to Other Months

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

This table compares monthly weather conditions in Buellton, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (56°F)95 mm (3.8 inches)80%moderate
February Weather13°C (55°F)78 mm (3.1 inches)83%high
March Weather13°C (55°F)86 mm (3.4 inches)80%very high
April Weather13°C (56°F)17 mm (0.7 inches)76%very high
May Weather14°C (57°F)10 mm (0.4 inches)75%extreme
June Weather15°C (60°F)1 mm (0.1 inches)74%extreme
July Weather17°C (63°F)1 mm (0.0 inches)75%extreme
August Weather18°C (64°F)1 mm (0.0 inches)72%extreme
September Weather18°C (64°F)1 mm (0.1 inches)70%very high
October Weather18°C (64°F)9 mm (0.4 inches)70%high
November Weather16°C (61°F)25 mm (1.0 inches)74%moderate
December Weather14°C (57°F)69 mm (2.7 inches)76%moderate

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