The relation between El Niño Souther Oscillation (ENSO) and degree-day (GD) was studied for Piracicaba (SP), for the period from 1950 to 2001. When GD in years of occurrence of El Niño was evaluated, using mean values, was observed mainly positives deviations and in years of occurrence of La Niña, was observed positive desvios in the first semester and negatives in the second semester. However, when GD in isolated years of occurrence of each phenomenon was analyzed, observed variation in the results in accordance with year and intensity of the phenomenon. Generalized influence of ENOS in relation to the GD was not observed.
degree-days; temperature; ENSO
