Ubatuba's weather is characterized by a mild spring, with temperatures gradually warming up from April to June, peaking at around 31°C in May. Summer brings hot and humid conditions, with temperatures often reaching over 30°C from December to February, but cooling down slightly in March and November. Autumn sees a return to milder temperatures, with highs ranging from 29°C to 34°C from September to November. Winter is the coolest period, with temperatures averaging around 16°C in July and August, although still relatively mild compared to other regions. The temperature fluctuations throughout the year are moderate, with minimal extremes.