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.
Recent weather here gives a sense of typical conditions: in 2025, Si Chiang Mai recorded a mean annual temperature of 79°F, ranging from 52°F lows in January to 98°F highs in March, with about 93 inches of precipitation across the year.
View historical weather for Si Chiang Mai · More cities in Nong Khai