Tres Lagoas experiences a subtropical climate with distinct seasonal variations. Winters are mild, with temperatures ranging from 4-12°C in June and July, making it the coolest period of the year. Spring brings moderate temperatures, averaging around 25-28°C, while summer is hot and humid, with temperatures often reaching 37-43°C from September to November. Autumn sees a slight decrease in temperature, but remains warm, with average highs still above 30°C. The region's temperature fluctuations are relatively small throughout the year, but there is a noticeable drop in temperature during winter months.