Weak upwelling occurs in the northeast during the northeast monsoon.
During the northeast monsoon (November March), the Indian North Equatorial Current (or Northeast Monsoon Drift) flows southwest and west, crossing the Equator.
During the northeast monsoon, strong upwelling occurs along the western coast of India.
During other seasons the prevailing wind is the dry northeast monsoon.
Blue dashed lines represent currents that only exist during northeast monsoon periods.
They sailed there with the northeast monsoon, returning home in the summer with the southwest.
The northeast monsoon typically blows from December to March, and the southwest monsoon blows from May to September.
The northeast monsoon occurs roughly from November to March and brings relatively dry, cool air and little precipitation to the mainland.
During the northeast monsoon, a weak counterclockwise gyre develops in the Arabian Sea, and a strong clockwise gyre forms in the Bay of Bengal.
Surface movements of the waters change direction with the season, the northeast monsoon giving them a clockwise circulation, the southeast monsoon a counterclockwise circulation.
The cooler, drier air of the northeast monsoon produces frequent morning fogs that generally dissipate by midday in the north and northeast regions.
