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December Weather in San Jose, Belize

Last updated: August 22, 2025

In San Jose, Belize, the average temperature in December hovers around 24°C (76°F), offering a comfortable climate for outdoor activities. However, temperatures can vary widely, with a minimum of 12°C (54°F) and a peak of 33°C (91°F). Expect about 53 mm (2.1 in) of precipitation spread over 14 days, contributing to an average humidity of 88%, ensuring a lush and vibrant atmosphere throughout the month.

December Temperature in San Jose

In December, in San Jose, the average temperature is 24°C (76°F). The maximum can reach 33°C (91°F) and the minimum can be as low as 12°C (54°F). This makes San Jose a pleasant destination for travelers looking to enjoy mild weather and a variety of 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 24°C (76°F), with highs reaching up to 33°C (91°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec757880838483838383817776
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 53 mm (2.1 in) over a period of 14 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 53 mm (2.1 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec552927357823911515018322610253
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 88%. With an average temperature of 24°C (76°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel like a gentle swim through the air, where every step is accompanied by a comforting yet slightly oppressive warmth.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%80%69%64%63%62%65%78%86%87%88%88%
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 is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131413131313131298
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 Weather24°C (75°F)55 mm (2.2 inches)85%very high
February Weather26°C (78°F)29 mm (1.2 inches)80%extreme
March Weather27°C (80°F)27 mm (1.1 inches)69%extreme
April Weather28°C (83°F)35 mm (1.4 inches)64%extreme
May Weather29°C (84°F)78 mm (3.1 inches)63%extreme
June Weather28°C (83°F)239 mm (9.4 inches)62%extreme
July Weather28°C (83°F)115 mm (4.5 inches)65%extreme
August Weather28°C (84°F)150 mm (5.9 inches)78%extreme
September Weather28°C (83°F)183 mm (7.2 inches)85%extreme
October Weather27°C (81°F)226 mm (8.9 inches)87%extreme
November Weather25°C (78°F)102 mm (4.0 inches)88%very high
December Weather24°C (76°F)53 mm (2.1 inches)88%very high

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