Vietnam is located in the south of the Tropic of Cancer, with high temperature and rainy weather and a tropical monsoon climate. The annual average temperature is about 24℃, and the annual average rainfall is 1500 ~ 2000mm. The north is divided into four seasons: spring, summer, autumn and winter. There are obvious rainy and dry seasons in the south, with rainy season from May to 10 in most areas and dry season from 1 1 to April of the following year.

The climate in Viet Nam is tropical, with heavy rainfall and high humidity throughout the year. The northern region is more or less continental because of the influence of China's terrestrial climate. The East China Sea (the "South China Sea" or "South China Sea", which was called by Vietnam after the end of 1950s) has a great influence on the humid climate of tropical monsoon on land.

The humid tropical monsoon climate has different effects on Vietnamese territory, so different regions in Vietnam have different climate characteristics. The climate in Vietnam changes with the seasons, east, west, north and south. Due to the influence of the northeast monsoon, the annual average temperature in Vietnam is lower than that in countries of the same latitude in Asia.