San Mariano, in Cagayan Valley, Philippines, is home to roughly 12,400 people in the Asia/Manila time zone at 17°N latitude.
Recent weather here gives a sense of typical conditions: in 2025, San Mariano recorded a mean annual temperature of 79°F, ranging from 65°F lows in February to 97°F highs in June, with about 137 inches of precipitation across the year.
View historical weather for San Mariano · More cities in Cagayan Valley