San Jacinto, in Ilocos, Philippines, is home to roughly 10,500 people in the Asia/Manila time zone at 16.1°N latitude.
In 2025, San Jacinto averaged an annual temperature of 81°F, with hottest temperatures reaching 101°F in April and lowest around 71°F in December. The city received approximately 109 inches of precipitation during the year.
View historical weather for San Jacinto · More cities in Ilocos