With a population of around 109,000, Mong Cai sits in Quang Ninh, Vietnam. The city operates in the Indochina time zone.
In 2025, Mong Cai averaged an annual temperature of 73°F, with hottest temperatures reaching 94°F in July and lowest around 44°F in January. The city received approximately 92 inches of precipitation during the year.
View historical weather for Mong Cai · More cities in Quang Ninh