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December Weather in San Martin, Colombia

Last updated: August 23, 2025

In December, the average temperature in San Martin, Colombia is a pleasant 25°C (77°F). You can expect a minimum of 17°C (63°F) and a maximum of 31°C (88°F), making it an inviting time to explore. However, plan for some rain, as 122 mm (4.8 in) of precipitation is spread over 24 days, contributing to an average humidity of 70%.

December Temperature in San Martin

In December in San Martin, the average temperature is 25°C (77°F). Maximums can reach 31°C (88°F), while minimums can drop to as low as 17°C (63°F). This pleasant climate makes it an ideal time for travelers to explore the beauty of San Martin.

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

The chart illustrates December temperature patterns in San Martin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Martin, December typically has an average temperature of 25°C (77°F), with highs reaching up to 31°C (88°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec767978777776767676757676
Data source: Temperature data for San Martin 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 Martin

In San Martin in December, the total precipitation amount is 122 mm (4.8 in) spread over 24 days.

December Precipitation Trends in San Martin

The chart displays monthly precipitation patterns in San Martin, 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 Martin, December typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec8728200452696610558563519452322122
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Martin

In San Martin in December, humidity is 70%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, moist blanket that clings to your skin, making every step feel heavier as you explore the sights and sounds of your destination.

December Average Humidity in San Martin

This chart illustrates the average monthly humidity levels in San Martin, 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 Martin is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec52%47%45%54%81%88%88%82%78%83%84%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Martin

In San Martin 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 San Martin.

Maximum UV Index Levels in San Martin for December

The chart shows the monthly maximum UV Index (UVI) for San Martin 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 Martin typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121314151413131313131110
Data source: San Martin 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 Martin Compares to Other Months

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

This table compares monthly weather conditions in San Martin, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)87 mm (3.4 inches)52%extreme
February Weather26°C (79°F)28 mm (1.1 inches)47%extreme
March Weather26°C (79°F)200 mm (7.9 inches)45%extreme
April Weather25°C (77°F)452 mm (17.8 inches)54%extreme
May Weather25°C (77°F)696 mm (27.4 inches)81%extreme
June Weather25°C (77°F)610 mm (24.0 inches)88%extreme
July Weather24°C (76°F)558 mm (22.0 inches)88%extreme
August Weather24°C (76°F)563 mm (22.2 inches)82%extreme
September Weather24°C (76°F)519 mm (20.4 inches)78%extreme
October Weather24°C (76°F)451 mm (17.8 inches)83%extreme
November Weather24°C (76°F)322 mm (12.7 inches)83%extreme
December Weather25°C (77°F)122 mm (4.8 inches)70%very high

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