Rio das Ostras, Brazil's climate is characterized by a warm and humid tropical savanna climate. The dry season typically spans from April to September, with temperatures gradually warming up throughout the year, reaching their peak in January and February with average highs around 36-37°C. From October to March, the region experiences a relatively wet season, although rainfall remains moderate. Summer months (December to February) are warmest, while winter months (June to August) are cooler, with temperatures rarely dipping below 10°C. Overall, Rio das Ostras enjoys mild winters and hot summers, with average temperatures ranging from 18-39°C throughout the year.