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December Weather in San Jose, Philippines

Last updated: August 27, 2025

In San Jose, Philippines, the average temperature in December hovers around 27°C (81°F). Daily highs can reach up to 31°C (88°F), while minimum temperatures may drop to 24°C (75°F). Expect significant precipitation, with an average of 382 mm (15.0 in) spread over 29 days, contributing to a notably high humidity level of 89%.

December Temperature in San Jose

In December in San Jose, the average temperature is 27°C (81°F). Maximums can reach 31°C (88°F) and minimums can be as low as 24°C (75°F). This pleasant weather makes San Jose an ideal destination for travelers seeking warmth and sunshine.

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 27°C (81°F), with highs reaching up to 31°C (88°F) and lows dropping to around 24°C (75°F).
JanFebMarAprMayJunJulAugSepOctNovDec797981828483828382828281
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 382 mm (15.0 in) spread over 29 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 382 mm (15.0 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec235138104107130222304255264252192382
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 89%. With an average temperature of 27°C (81°F), this humidity feels like a wet blanket enveloping you, making outdoor activities challenging and travel a little less comfortable.

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 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%78%77%79%83%86%87%87%88%85%89%89%
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 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121315161414141415131111
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 (80°F)235 mm (9.3 inches)82%extreme
February Weather26°C (80°F)138 mm (5.4 inches)78%extreme
March Weather27°C (81°F)104 mm (4.1 inches)77%extreme
April Weather28°C (82°F)107 mm (4.2 inches)79%extreme
May Weather29°C (84°F)130 mm (5.1 inches)83%extreme
June Weather28°C (83°F)222 mm (8.7 inches)86%extreme
July Weather28°C (83°F)304 mm (12.0 inches)87%extreme
August Weather28°C (83°F)255 mm (10.0 inches)87%extreme
September Weather28°C (83°F)264 mm (10.4 inches)88%extreme
October Weather28°C (82°F)251 mm (9.9 inches)85%extreme
November Weather28°C (82°F)191 mm (7.5 inches)89%extreme
December Weather27°C (81°F)382 mm (15.0 inches)89%extreme

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