The Maldives has a tropical monsoon climate (Am) under the Köppen climate classification, which is affected by the large landmass of South Asia to the north. Because the Maldives has the lowest elevation of any country in the world, the temperature is constantly hot and often humid. The presence of this landmass causes differential heating of land and water. These factors set off a rush of moisture-rich air from the Indian Ocean over South Asia, resulting in the southwest monsoon. Two seasons dominate Maldives' weather: the dry season associated with the winter northeastern monsoon and the rainy season which brings strong winds and storms.