The wet season is a term commonly used when describing the weather in the tropics. The weather in the tropics is dominated by the tropical rain belt, which oscillates from the northern to the southern tropics over the course of the year. The tropical rain belt lies in the southern hemisphere roughly from November to March, and during this time the southern tropics experience a wet season, in which rain is common. Typically, days start off hot and sunny, with humidity building during the day and culminating in large thunderstorms and torrential rain in the afternoon or evening.
From April to September, the rain belt lies in the northern hemisphere, and the northern tropics experience their wet season.
The rain belt reaches roughly as far north as the Tropic of Cancer and as far south as the Tropic of Capricorn. Near these latitudes, there is one wet season and one dry season annually. On the equator, there are two wet and two dry seasons as the rain belt passes over twice a year, once moving north and once moving south. Between the tropics and the equator, locations may experience a short wet and a long wet season. Local geography may substantially modify these climate patterns, however.
A wet season or rainyseason is a season in which the average rainfall in a region is significantly increased.
The term green season is also sometimes used as a euphemism by tourist authorities.
Tropical weather is dominated by the movement of the tropical rain belt, which oscillates from the northern to the southern tropics over the course of the year.
The term was originally applied to seasonal winds in the Indian Ocean and Arabian Sea.
The word is also used more specifically for the season in which this wind blows from the southwest in India and adjacent areas that is characterized by very heavy rainfall, and especially, for the rainfall associated with this wind.
Together, these factors mean that the heat capacity of the layer participating in the seasonal cycle is much larger over the oceans than over land, with the consequence that land warms faster and reaches a higher temperature than the ocean.
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