January Weather in San Jose, Philippines

Last updated: August 27, 2025

In January, the average temperature in San Jose, Philippines is a pleasant 26°C (79°F), with a minimum of 22°C (71°F) and a maximum reaching 31°C (89°F). Expect 58 mm (2.3 in) of precipitation spread over about 7 days, contributing to an average humidity of 78%. Ideal for those who enjoy warm, humid climates!

January Temperature in San Jose

In January in San Jose, the average temperature is 26°C (79°F). Maximums can reach 31°C (89°F), and minimums can dip as low as 22°C (71°F). This pleasant weather makes it an ideal time for outdoor adventures and exploration.

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

The chart illustrates January 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, January typically has an average temperature of 26°C (79°F), with highs reaching up to 31°C (89°F) and lows dropping to around 22°C (71°F).

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

January Precipitation in San Jose

In San Jose in January, the precipitation amount is 58 mm (2.3 in) over the course of 7 days.

January Precipitation Trends in San Jose

The chart displays monthly precipitation patterns in San Jose, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In San Jose, January typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 7 days.

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

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Millimeters (mm) Inches (in)

January Humidity in San Jose

In San Jose in January, humidity is 78%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket wrapping around you, making travel a bit sluggish as the air hangs thick, leaving you in need of frequent breaks to hydrate and find shade.

January Average Humidity in San Jose

This chart illustrates the average monthly humidity levels in San Jose, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in San Jose is approximately 78%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Jose

In San Jose in January, 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 January

The chart shows the monthly maximum UV Index (UVI) for San Jose in January, 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 January, the maximum UV index in San Jose typically reaches 11, which falls under the extreme exposure category.

Data source: San Jose January 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 January 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 January’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 January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	58 mm (2.3 inches)	78%	extreme
February Weather	26°C (79°F)	36 mm (1.4 inches)	75%	extreme
March Weather	27°C (81°F)	37 mm (1.5 inches)	74%	extreme
April Weather	28°C (83°F)	36 mm (1.4 inches)	76%	extreme
May Weather	29°C (84°F)	155 mm (6.1 inches)	76%	extreme
June Weather	28°C (83°F)	298 mm (11.7 inches)	81%	extreme
July Weather	27°C (81°F)	465 mm (18.3 inches)	84%	extreme
August Weather	27°C (81°F)	355 mm (14.0 inches)	85%	extreme
September Weather	27°C (81°F)	386 mm (15.2 inches)	85%	extreme
October Weather	27°C (81°F)	265 mm (10.4 inches)	82%	extreme
November Weather	27°C (81°F)	153 mm (6.0 inches)	85%	extreme
December Weather	27°C (80°F)	165 mm (6.5 inches)	86%	very high