Oi is a city of approximately 50,600 people in Saitama, Japan. Located in the Japan Standard Time zone at 35.9°N latitude.
In 2025, Oi recorded an average annual temperature of 62°F. The hottest temperatures reached 107°F in August; the coolest were 27°F in January. Total precipitation for the year was 44 inches, with the wettest month being May. Snowfall for the year totaled approximately 3 inches.
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