Si Ma Cai is a city of approximately 5,700 people in Lao Cai, Vietnam. Located in the Indochina time zone at 22.7°N latitude.
Recent weather here gives a sense of typical conditions: in 2025, Si Ma Cai recorded a mean annual temperature of 66°F, ranging from 35°F lows in January to 88°F highs in June, with about 68 inches of precipitation across the year.
View historical weather for Si Ma Cai · More cities in Lao Cai