Mae Sai, in Chiang Rai, Thailand, is home to roughly 27,500 people in the Indochina time zone at 20.4°N latitude.
In 2025, Mae Sai averaged an annual temperature of 76°F, with hottest temperatures reaching 99°F in April and lowest around 52°F in November. The city received approximately 95 inches of precipitation during the year.
View historical weather for Mae Sai · More cities in Chiang Rai