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December Weather in San Mateo, Colombia

Last updated: August 23, 2025

In December, the average temperature in San Mateo, Colombia hovers around 11°C (52°F), with minimums dipping to 0°C (33°F) and maximums reaching up to 19°C (67°F). Expect about 77 mm (3.0 in) of precipitation spread over 21 days, contributing to an average humidity of 70%.

December Temperature in San Mateo

In December in San Mateo, the average temperature is 11°C (52°F). Maximums can reach 19°C (67°F) and minimums can be as low as 0°C (33°F). This mild climate makes it an ideal time for exploring the area's outdoor attractions and enjoying local activities.

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

The chart illustrates December temperature patterns in San Mateo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Mateo, December typically has an average temperature of 11°C (52°F), with highs reaching up to 19°C (67°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec515252535352525252525252
Data source: Temperature data for San Mateo 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 Mateo

In San Mateo in December, the total precipitation amount reaches 77 mm (3.0 in) over the course of 21 days.

December Precipitation Trends in San Mateo

The chart displays monthly precipitation patterns in San Mateo, 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 Mateo, December typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec8411525023323321118614415618016477
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Mateo

In San Mateo in December, humidity is 70%. With an average temperature of 11°C (52°F), this humidity feels like a chilly blanket hugging your skin, making outdoor exploration invigorating yet slightly uncomfortable without the right layers.

December Average Humidity in San Mateo

This chart illustrates the average monthly humidity levels in San Mateo, 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 Mateo 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 Mateo

In San Mateo 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 Mateo.

Maximum UV Index Levels in San Mateo for December

The chart shows the monthly maximum UV Index (UVI) for San Mateo 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 Mateo typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151718191716161616151413
Data source: San Mateo 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 Mateo Compares to Other Months

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

This table compares monthly weather conditions in San Mateo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)84 mm (3.3 inches)52%extreme
February Weather11°C (52°F)115 mm (4.5 inches)47%extreme
March Weather11°C (52°F)250 mm (9.8 inches)45%extreme
April Weather11°C (53°F)233 mm (9.2 inches)54%extreme
May Weather12°C (53°F)233 mm (9.2 inches)81%extreme
June Weather11°C (52°F)211 mm (8.3 inches)88%extreme
July Weather11°C (52°F)186 mm (7.3 inches)88%extreme
August Weather11°C (52°F)144 mm (5.7 inches)82%extreme
September Weather11°C (52°F)155 mm (6.1 inches)78%extreme
October Weather11°C (52°F)180 mm (7.1 inches)83%extreme
November Weather11°C (52°F)164 mm (6.5 inches)83%extreme
December Weather11°C (52°F)77 mm (3.0 inches)70%extreme

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