December Weather in San Jose, Peru

Last updated: August 27, 2025

In December, the average temperature in San Jose, Peru is a pleasant 23°C (73°F), with a minimum of 17°C (62°F) and a maximum reaching 32°C (89°F). Expect a bit of rain, with an average precipitation of 16 mm (0.6 in) spread over 4 days. The air is quite humid, with an average humidity level of 82%, making it feel both warm and tropical.

December Temperature in San Jose

In December in San Jose, the average temperature is 23°C (73°F), with maximums reaching up to 32°C (89°F) and minimums dipping as low as 17°C (62°F). This pleasant climate makes San Jose an ideal destination for travelers seeking mild weather and outdoor adventures.

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 (73°F), with highs reaching up to 32°C (89°F) and lows dropping to around 17°C (62°F).

Data source: Temperature data for San Jose generated using information from the Copernicus Climate Change Service.

December Precipitation in San Jose

In San Jose in December, the precipitation amount is 16 mm (0.6 in) over a span of 4 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 16 mm (0.6 inches) of precipitation spread over approximately 4 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in San Jose

In San Jose in December, humidity is 82%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making outdoor activities feel a bit more strenuous but offering a tropical ambiance perfect for leisurely strolls and relaxed sightseeing.

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 82%, offering insight into how humid the weather typically is during this month.

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 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 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 13, which falls under the extreme exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (78°F)	17 mm (0.7 inches)	83%	extreme
February Weather	26°C (80°F)	45 mm (1.8 inches)	81%	extreme
March Weather	26°C (80°F)	85 mm (3.3 inches)	88%	extreme
April Weather	24°C (76°F)	21 mm (0.8 inches)	85%	extreme
May Weather	22°C (72°F)	11 mm (0.4 inches)	78%	extreme
June Weather	21°C (69°F)	2 mm (0.1 inches)	62%	extreme
July Weather	19°C (67°F)	2 mm (0.1 inches)	44%	extreme
August Weather	19°C (66°F)	2 mm (0.1 inches)	38%	extreme
September Weather	19°C (67°F)	1 mm (0.0 inches)	42%	extreme
October Weather	20°C (68°F)	9 mm (0.3 inches)	58%	extreme
November Weather	21°C (70°F)	7 mm (0.3 inches)	69%	extreme
December Weather	23°C (73°F)	16 mm (0.6 inches)	82%	extreme