Si Chiang Mai is a city of approximately 14,100 people in Nong Khai, Thailand. Located in the Indochina time zone at 18°N latitude.
In 2025, Si Chiang Mai recorded an average annual temperature of 79°F. The hottest temperatures reached 98°F in March; the coolest were 52°F in January. Total precipitation for the year was 93 inches, with the wettest month being September.
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