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December Weather in Santa Barbara, Guatemala

Last updated: August 23, 2025

In Santa Barbara, Guatemala, the average temperature in December hovers around 16°C (60°F), with a minimum dipping to 5°C (41°F) and a maximum reaching up to 25°C (78°F). Expect a precipitation amount of 22 mm (0.9 in) spread over about 5 days, and enjoy an average humidity level of 76%. Stay prepared for a mild and somewhat humid month!

December Temperature in Santa Barbara

In December in Santa Barbara, the average temperature is 16°C (60°F). The maximum can reach 25°C (78°F), and the minimum can be as low as 5°C (41°F). This makes Santa Barbara a comfortable destination for those who enjoy mild weather and pleasant outdoor activities during this time of year.

December Weather in Santa Barbara: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Santa Barbara, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Barbara, December typically has an average temperature of 16°C (60°F), with highs reaching up to 25°C (78°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec606264656564636363636160
Data source: Temperature data for Santa Barbara 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 Santa Barbara

In Santa Barbara in December, the total precipitation amount is 22 mm (0.9 in) spread over a period of 5 days.

December Precipitation Trends in Santa Barbara

The chart displays monthly precipitation patterns in Santa Barbara, 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 Santa Barbara, December typically receives around 22 mm (0.9 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec181126682293331232142592496722
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Santa Barbara

In Santa Barbara in December humidity is 76%. With an average temperature of 16°C (60°F), this humidity feels like a warm embrace, making it somewhat uncomfortable for traveling, as the air can feel heavy and oppressive, potentially leading to fatigue and a constant need for hydration.

December Average Humidity in Santa Barbara

This chart illustrates the average monthly humidity levels in Santa Barbara, 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 Santa Barbara is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%68%59%57%65%66%75%82%82%83%80%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Santa Barbara

In Santa Barbara in December, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Santa Barbara.

Maximum UV Index Levels in Santa Barbara for December

The chart shows the monthly maximum UV Index (UVI) for Santa Barbara 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 Santa Barbara typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121416161515161514141110
Data source: Santa Barbara 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 Santa Barbara Compares to Other Months

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

This table compares monthly weather conditions in Santa Barbara, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)18 mm (0.7 inches)76%extreme
February Weather17°C (62°F)11 mm (0.4 inches)68%extreme
March Weather18°C (64°F)26 mm (1.0 inches)59%extreme
April Weather18°C (65°F)68 mm (2.7 inches)57%extreme
May Weather18°C (65°F)229 mm (9.0 inches)65%extreme
June Weather18°C (64°F)333 mm (13.1 inches)66%extreme
July Weather17°C (64°F)123 mm (4.8 inches)75%extreme
August Weather17°C (64°F)214 mm (8.4 inches)82%extreme
September Weather17°C (63°F)259 mm (10.2 inches)82%extreme
October Weather17°C (63°F)249 mm (9.8 inches)83%extreme
November Weather16°C (62°F)67 mm (2.6 inches)80%extreme
December Weather16°C (60°F)22 mm (0.9 inches)76%very high

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