In the program geography in schools, knowledge areas geography naturally plays an important role, as one of the basis to explain the natural phenomena and economic - social. The knowledge geographic nature often difficult and abstract, especially knowledge about climate. Some of the contents on climate students find difficult is to find out the southwest monsoon in Vietnam. Within the scope of article, the authors would like to clarify: the cause of formation, performance characteristics, operation time of the Southwest monsoon in Vietnam, based on climatology to explain, and identify system Ventilate the area. On that basis, proposed teaching content Southwest monsoon while teaching about climate of Vietnam.