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December Weather in San Jose, Panama

Last updated: August 27, 2025

In San Jose, Panama, the average temperature in December hovers around 26°C (79°F). Expect a minimum of 23°C (73°F) and a peak of 31°C (88°F) during this time. The region sees around 90 mm (3.6 in) of precipitation over 20 days, resulting in an average humidity level of 79%. Prepare for a warm and slightly damp month!

December Temperature in San Jose

In December in San Jose, the average temperature is 26°C (79°F). Maximums can reach 31°C (88°F), while minimums can be as low as 23°C (73°F). This pleasant weather makes San Jose an ideal destination for travelers seeking warmth and comfort during their visit.

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

The chart illustrates December temperature patterns in San Jose, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Jose, December typically has an average temperature of 26°C (79°F), with highs reaching up to 31°C (88°F) and lows dropping to around 23°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec797980818079797979797879
Data source: Temperature data for San Jose 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 Jose

In San Jose in December, the precipitation amount is 90 mm (3.6 in) over a span of 20 days.

December Precipitation Trends in San Jose

The chart displays monthly precipitation patterns in San Jose, 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 Jose, December typically receives around 90 mm (3.6 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec2914207126226827025125327026290
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Jose

In San Jose in December humidity is 79%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting. Travelers should be prepared for a heavy air that clings to the skin, making hydration essential while navigating the sights and sounds of the city.

December Average Humidity in San Jose

This chart illustrates the average monthly humidity levels in San Jose, 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 Jose is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%71%69%70%73%90%89%87%87%86%86%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Jose

In San Jose 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 Jose.

Maximum UV Index Levels in San Jose for December

The chart shows the monthly maximum UV Index (UVI) for San Jose 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 Jose typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121314151513131313131210
Data source: San Jose 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 Jose Compares to Other Months

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

This table compares monthly weather conditions in San Jose, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)29 mm (1.2 inches)72%extreme
February Weather26°C (80°F)14 mm (0.5 inches)71%extreme
March Weather27°C (80°F)20 mm (0.8 inches)69%extreme
April Weather27°C (81°F)71 mm (2.8 inches)70%extreme
May Weather27°C (80°F)262 mm (10.3 inches)73%extreme
June Weather26°C (80°F)268 mm (10.5 inches)90%extreme
July Weather26°C (80°F)270 mm (10.6 inches)88%extreme
August Weather26°C (80°F)251 mm (9.9 inches)87%extreme
September Weather26°C (79°F)253 mm (10.0 inches)87%extreme
October Weather26°C (79°F)270 mm (10.6 inches)86%extreme
November Weather26°C (79°F)262 mm (10.3 inches)86%extreme
December Weather26°C (79°F)90 mm (3.6 inches)79%very high

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