With a population of around 20,700, Irosin sits in Bicol Region, Philippines. The city operates in the Asia/Manila time zone.
In 2025, Irosin averaged an annual temperature of 79°F, with hottest temperatures reaching 94°F in June and lowest around 71°F in February. The city received approximately 130 inches of precipitation during the year.
View historical weather for Irosin · More cities in Bicol Region