Brazil is the world s largest tropical country. Once 93pct of the territory is located in the southern hemisphere, the seasons are the direct opposite of those in Europe or in the United States. When it is winter in the northern hemisphere, it is summer in Brazil and vice-versa. Climate ranges from the typically tropical north, where it never gets cold, to a more temperate climate in the south, where there is even snow in winter, with all sorts of sub-tropical Variations in between. On average, temperature during summer ranges from 25c to 40c /75f to 100f/. The climate in Brazil is divided into :
HUMID TROPICAL: occurs throughout Amazonia /including the west of maranhao and the north of mato grosso/, except in the northest of para and amazonas and the east of roraima. Such climate is characterized by the absence of dry season, high rain levels /around 3.000mm a year/ and very high humidity and nebulosity with little thermic amplitude /even less than the variation between day and night/. The typical vegetation of this type of climate is the equatorial forest.
EQUATORIAL: covers the northwest of Amazonia and is similar to the humid tropical climate but the rain is better distributed throughout the year. The predominant vegetation is the equatorial forest.
DRY TROPICAL: characterized by rainy season /with high rainy levels/ in the summer and dry season in winter. this climate covers the biggest part of the country /north of mato grosso do sul, south of mato grosso, north of Sao Paulo, west, north & east of minas gerais, all the coast from rio de janeiro to bahia, part of ceara, west of piaui, east ofmaranhao, northwest of para & east of roraima. Due to the big area covered, the rain totals as well as the rainy and the dry seasons vary. the rain average goes from 1.300 to 1.600mm and the typical vegetation is the "cerrado".
SEMI-DRY: found in the backwoods of the northeast, it spreads out to the coast & is characterized by low nebulosity, heavy insolation, high evaporation level & high temperature average/ around 27 celsius/. The relative air humidity is normally low & the rain, which is not much /from 250mm to 600mm a year/, concentrates in a short period of time, causing torrential floods. Even during rainy time, its ditribution is irregular, which makes the rain not to fall down for some years & leads to drought. The typical vegetation of this type of climate is the "caatinga". The oriental coast of the northeast is marked by the absence of summer rain & its occurance in winter which corresponds to the rainy season & not to the winter itself/, with rainy levels around 1.600mm a year.