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December Weather in San Jose, Panama

Last updated: August 27, 2025

In San Jose, Panama, the average temperature in December is a pleasant 23°C (74°F), with minimums dipping to 19°C (66°F) and maximums reaching up to 29°C (84°F). Expect a precipitation amount of 160 mm (6.3 in) spread over 28 days, and enjoy a relatively high average humidity of 79%.

December Temperature in San Jose

In December in San Jose, the average temperature is 23°C (74°F). The maximum can reach 29°C (84°F), and the minimum can be as low as 19°C (66°F). It's a great time to visit San Jose for enjoyable weather and outdoor activities.

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 23°C (74°F), with highs reaching up to 29°C (84°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec737374757575757575747474
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 total precipitation amount is 160 mm (6.3 in) over the course of 28 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 160 mm (6.3 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec1027981158374326326319401413344160
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 23°C (74°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities a bit less comfortable, urging travelers to seek shade and hydration throughout the day.

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.
JanFebMarAprMayJunJulAugSepOctNovDec121314151513131314141210
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 Weather23°C (74°F)102 mm (4.0 inches)72%extreme
February Weather23°C (74°F)79 mm (3.1 inches)71%extreme
March Weather23°C (74°F)81 mm (3.2 inches)69%extreme
April Weather24°C (76°F)158 mm (6.2 inches)70%extreme
May Weather24°C (76°F)374 mm (14.7 inches)73%extreme
June Weather24°C (76°F)326 mm (12.8 inches)90%extreme
July Weather24°C (75°F)326 mm (12.8 inches)88%extreme
August Weather24°C (75°F)319 mm (12.6 inches)87%extreme
September Weather24°C (75°F)401 mm (15.8 inches)87%extreme
October Weather24°C (75°F)413 mm (16.2 inches)86%extreme
November Weather23°C (74°F)344 mm (13.5 inches)86%extreme
December Weather23°C (74°F)160 mm (6.3 inches)79%very high

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