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December Weather in Santa Barbara, Bolivia

Last updated: August 22, 2025

In December, the average temperature in Santa Barbara, Bolivia hovers around 12°C (54°F). Expect a minimum of 2°C (36°F) and a pleasant maximum of 26°C (80°F). However, be prepared for some rain, as 117 mm (4.6 in) of precipitation can fall over approximately 19 days. Plus, with an average humidity of 79%, you might want to keep a light jacket handy!

December Temperature in Santa Barbara

In December in Santa Barbara, the average temperature is 12°C (54°F). Maximums can reach 26°C (80°F) and minimums can be as low as 2°C (36°F). This makes it a great time to explore Santa Barbara, as you can enjoy pleasant daytime weather while also being prepared for cooler evenings.

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 12°C (54°F), with highs reaching up to 26°C (80°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec525252514642424550545554
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 117 mm (4.6 in), which falls over the course of 19 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 117 mm (4.6 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec106133106253132143052117
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 79%. With an average temperature of 12°C (54°F), this humidity makes traveling feel quite muggy, leading to a sticky discomfort that can sap your energy and make outdoor activities less enjoyable.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%90%87%82%59%47%43%60%67%71%79%
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 19, which corresponds to an extreme exposure category. With a time to burn of just 10 minutes, it’s essential to take precautions. For 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 19, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec18181715119101215181919
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 Weather11°C (53°F)106 mm (4.2 inches)87%extreme
February Weather11°C (52°F)133 mm (5.2 inches)88%extreme
March Weather11°C (52°F)106 mm (4.2 inches)89%extreme
April Weather10°C (51°F)25 mm (1.0 inches)87%extreme
May Weather8°C (46°F)3 mm (0.1 inches)82%extreme
June Weather6°C (42°F)1 mm (0.0 inches)59%very high
July Weather6°C (42°F)3 mm (0.1 inches)47%very high
August Weather7°C (45°F)2 mm (0.1 inches)43%extreme
September Weather10°C (50°F)14 mm (0.5 inches)60%extreme
October Weather12°C (54°F)30 mm (1.2 inches)67%extreme
November Weather13°C (55°F)52 mm (2.1 inches)71%extreme
December Weather12°C (54°F)117 mm (4.6 inches)79%extreme

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