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December Weather in San Sebastian, Colombia

Last updated: August 23, 2025

In December, the average temperature in San Sebastian, Colombia hovers around 14°C (58°F). Expect a wide range in daily temperatures, with minimums dropping to 7°C (45°F) and maximums reaching up to 22°C (72°F). The region experiences significant precipitation, totaling 156 mm (6.2 in) over approximately 23 days, contributing to an average humidity level of 85%. Stay prepared for a mix of cool and wet conditions!

December Temperature in San Sebastian

In December in San Sebastian, the average temperature is 14°C (58°F). The maximum can reach 22°C (72°F), while the minimum can drop to as low as 7°C (45°F). This mild weather makes it an ideal time to explore and enjoy outdoor activities in San Sebastian.

December Weather in San Sebastian: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Sebastian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Sebastian, December typically has an average temperature of 14°C (58°F), with highs reaching up to 22°C (72°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec575857575757555657575857
Data source: Temperature data for San Sebastian 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 San Sebastian

In San Sebastian in December, the precipitation amount is 156 mm (6.2 in) spread over 23 days.

December Precipitation Trends in San Sebastian

The chart displays monthly precipitation patterns in San Sebastian, 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 San Sebastian, December typically receives around 156 mm (6.2 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec150177211174174126896863126211156
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Sebastian

In San Sebastian in December, humidity is 85%. With an average temperature of 14°C (58°F), this humidity feels like a thick blanket wrapping around you, making even short walks feel heavy and exhausting for traveling.

December Average Humidity in San Sebastian

This chart illustrates the average monthly humidity levels in San Sebastian, 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 San Sebastian is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%66%74%83%93%93%84%61%53%67%78%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Sebastian

In San Sebastian in December, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Sebastian.

Maximum UV Index Levels in San Sebastian for December

The chart shows the monthly maximum UV Index (UVI) for San Sebastian 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 San Sebastian typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161718181614151515161513
Data source: San Sebastian 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 San Sebastian Compares to Other Months

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

This table compares monthly weather conditions in San Sebastian, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (57°F)150 mm (5.9 inches)72%extreme
February Weather14°C (58°F)176 mm (6.9 inches)66%extreme
March Weather14°C (58°F)211 mm (8.3 inches)74%extreme
April Weather14°C (58°F)174 mm (6.9 inches)83%extreme
May Weather14°C (58°F)174 mm (6.9 inches)93%extreme
June Weather14°C (57°F)126 mm (4.9 inches)93%extreme
July Weather13°C (56°F)89 mm (3.5 inches)84%extreme
August Weather13°C (56°F)68 mm (2.7 inches)61%extreme
September Weather14°C (57°F)62 mm (2.5 inches)53%extreme
October Weather14°C (58°F)126 mm (5.0 inches)67%extreme
November Weather14°C (58°F)211 mm (8.3 inches)78%extreme
December Weather14°C (58°F)156 mm (6.2 inches)85%extreme

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