January Weather in San Jose, Philippines

Last updated: August 27, 2025

In January, the average temperature in San Jose, Philippines hovers around 27°C (80°F), making it a warm destination for visitors. Expect a minimum temperature of 20°C (69°F) and a maximum that can reach up to 33°C (91°F). With 119 mm (4.7 in) of precipitation spread across 12 days, occasional rain is likely. The average humidity sits at a tropical 81%, adding to the warm and lush atmosphere of the region.

January Temperature in San Jose

In January in San Jose, the average temperature is 27°C (80°F). Maximums can reach 33°C (91°F), and minimums can be as low as 20°C (69°F). This pleasant climate makes San Jose an ideal destination for travelers seeking warm weather and outdoor activities.

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 27°C (80°F), with highs reaching up to 33°C (91°F) and lows dropping to around 20°C (69°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 total precipitation amount is 119 mm (4.7 in), falling over a span of 12 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 119 mm (4.7 inches) of precipitation spread over approximately 12 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 81%. With an average temperature of 27°C (80°F), this humidity feels like a warm blanket wrapping around you, making travel feel sticky and heavy, but the vibrant atmosphere can still be invigorating, inviting moments of exploration in slower, more deliberate steps.

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 81%, 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 is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, 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 12, 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	27°C (80°F)	119 mm (4.7 inches)	81%	extreme
February Weather	27°C (81°F)	81 mm (3.2 inches)	78%	extreme
March Weather	28°C (83°F)	78 mm (3.1 inches)	76%	extreme
April Weather	29°C (84°F)	108 mm (4.3 inches)	77%	extreme
May Weather	28°C (83°F)	267 mm (10.5 inches)	78%	extreme
June Weather	27°C (81°F)	382 mm (15.0 inches)	80%	extreme
July Weather	27°C (80°F)	510 mm (20.1 inches)	81%	extreme
August Weather	27°C (80°F)	537 mm (21.2 inches)	83%	extreme
September Weather	27°C (80°F)	466 mm (18.3 inches)	85%	extreme
October Weather	27°C (80°F)	429 mm (16.9 inches)	80%	extreme
November Weather	27°C (81°F)	194 mm (7.6 inches)	83%	extreme
December Weather	27°C (81°F)	211 mm (8.3 inches)	86%	extreme