The aim of the work was to evaluate climate trends in eight monthly rainfall series of the State of São Paulo, Brazil by using the non-parametric model called Seasonal Mann-Kendall test (SMK). Results of the SMK applied at the location of Monte Alegre do Sul shown the presence of increasing trends within the monthly series of May and September. At the weather stations of Campinas and Ribeirão Preto the results of this non parametric test indicated the presence of increasing trends within the monthly series of May. At the weather station of Jundiaí, the SMK indicated the presence of increasing trends only when annual precipitation amounts were evaluated. At the locations of Cordeirópolis and Pindorama, no significant trend was detected. At the weather station of Ubatuba, the SMK indicated the presence of decreasing trend within the monthly series of August.
climate change; seasonal Mann Kendall test
