Diaz is a city of approximately 4,000 people in Ilocos, Philippines. Located in the Asia/Manila time zone at 15.8°N latitude.
Recent weather here gives a sense of typical conditions: in 2025, Diaz recorded a mean annual temperature of 80°F, ranging from 66°F lows in December to 101°F highs in April, with about 119 inches of precipitation across the year.