Phak Hai, in Phra Nakhon Si Ayutthaya, Thailand, is home to roughly 19,400 people in the Indochina time zone at 14.5°N latitude.
In 2025, Phak Hai recorded an average annual temperature of 82°F. The hottest temperatures reached 103°F in April; the coolest were 61°F in November. Total precipitation for the year was 66 inches, with the wettest month being September.
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