The observation of the spatial rainfall distribution, medium or long periods, highlights the regularities of rhythm climate of a region, enabling find other areas wetter and drier, and the transition regions. This study aims at analyzing the seasonal quarterly and annual total rainfall in the sub-basin 63 in Mato Grosso do Sul (direct tributary of the Paraná basin), and occurs as a spatio-temporal variability of its rains . It's used total quarterly and annual precipitation time series of 30 years of rainfall data from the sub-basin 63 in Mato Grosso do Sul. In the region surrounding the part of Mato Grosso do Sul, the sub-basin 63, it was concluded that there is a predominance of type tropical climate or altitude tropical, with summer rains and dry winter. The highest rates of annual rainfall (1600-1800 mm) were observed in the Northwest, Midwest and southern sub-basin 63 in Mato Grosso do Sul, according to the average history of 30 years studied, 1977 to 2006. Already the eastern sub-basin 63, in Mato Grosso do Sul, recorded annual minimum of 1150 mm. In the first quarter of the year, which was the wettest, there was a total of 700 mm. Have a minimum of the first quarter of the year was 520 mm, according to the average history of 30 years studied, 1977 to 2006.O estudo abrange os seguintes rios principais: Rio Anhaduí, Rio Anhanduzinho, Rio do Peixe, Rio Feio, Rio Aguapei, Rio Pardo, Rio Santo Anastácio, Rio Sucuriú e Rio Verde. O estudo abrange a parte Oeste do estado de São Paulo e a parte Leste do estado do Mato Grosso do Sul e os seguintes municípios: Água Clara, Anaurilândia, Bandeirantes, Bataguassu, Brasilândia, Camapuã, Campo Grande, Cassilândia, Chapadão do Sul, Costa Rica, Presidente Epitácio, Presidente Prudente, Presidente Venceslau, Promissão, Quatá, Queiroz, Quintana, Rancharia, Regente Feijó, Ribeirão dos Índios, Inocência, Rinópolis, Rosana, Rubiácea, Sagres, Salmourão, Santa Mercedes, Santo Anastácio, Santo Expedito, Santópolis do Aguapeí, São João do Pau d`Alho, Jaraguari, Teodoro Sampaio, Tupã, Tupi Paulista, Valparaíso, Vera Cruz, Nova Alvorada do Sul, Nova Andradina, Ribas do Rio Pardo, Santa Rita do Pardo, Selvíria, Sidrolândia, Três Lagoas, Adamantina, Alfredo Marcondes, Alto Alegre, Alvaro Machado, Alvinlândia, Andradina, Anhumas, Araçatuba, Arco-Iris, Bastos, Bento de Abreu, Bilac, Bora, Braúna, Cafelândia, Caiabu, Caiaua, Castilho, Clementina, Coroados, Dracena, Echopora, Emilianópolis, Euclides da Cunha Paulista, Flora Rica, Florida Paulista, Gabriel Monteiro, Galia, Garça, Getulina, Guaiçara, Gauimbe, Guaraçaí, Guarantã, Herculândia, Iacri, Indiana, Inubia Paulista, Irapuru, Itaurã, João Ramalho, Julio Mesquita, Junqueirópolis, Lavínia, Lins, Lutécia, Maraba Paulista, Mariápolis, Marília, Martinópolis, Mirandópolis, Mirante do Paranapanema, Monte Castelo, Murutinga do Sul, Nova Guataporanga, Nova Independência, Ocauçu, Oriente, Oscar Bressane, Osvaldo Cruz, Ouro Verde, Pacaembu, Panorama, Paraguaçu Paulista, Parapuã, Pauliceia, Penápolis, Piacatu, Piquerobi, Pirajuí, Pirapozinho, Pompéia, Pracinha, Presidente Alves e Presidente Bernardes. Abrange também o Complexo de Urubupungá, a Hidrelétrica de Porto Primavera e a Hidrelétrica de Jupiá.