Sao Joaquim da Barra experiences a mild climate, with temperatures varying across the seasons. During the summer months of September and October, temperatures soar, often reaching highs above 37°C, while winter is quite chilly, with lows around freezing point in June and July. Spring and autumn are relatively mild, with temperatures ranging from 12 to 35°C. The temperature drops slightly in April and May, but still remains warm compared to the cooler months of June and July. Overall, Sao Joaquim da Barra has a moderate climate with distinct seasonal changes.