The wind that changes direction twice a year is called.

Winds that change direction twice a year are called monsoons. In winter, the wind blows from land, and in summer from the ocean. This is due to the fact that in summer the land heats up more than the ocean and a low pressure area is established over the land, and a high pressure area over the ocean. In winter, the opposite. In summer, the wind carries moisture-laden air, and in winter it is cold and dry.