Diaz is a city of approximately 4,000 people in Ilocos, Philippines. Located in the Asia/Manila time zone at 15.8°N latitude.
In 2025, Diaz recorded an average annual temperature of 80°F. The hottest temperatures reached 101°F in April; the coolest were 66°F in December. Total precipitation for the year was 119 inches, with the wettest month being July.
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