Rio do Sul, Brazil has a mild climate with distinct seasonal variations. Winters are cool and wet, with temperatures ranging from 6-32°C in April, gradually decreasing to -3-28°C in July, making it the coolest month. Springs bring moderate temperatures, averaging around 16-23°C in May-June. Summers are warm and humid, with temperatures often reaching up to 35°C in January-February. Autumns are mild and dry, with temperatures gradually cooling down towards winter.