Bertioga's climate is mild, with temperatures gradually warming up towards the end of the year. Winters are cool and dry, with January being the coolest month, averaging around 24°C. As spring approaches in March, temperatures rise slightly, but remain relatively stable until June, when they start to drop again. The summer months from September to November bring warmer temperatures, with occasional highs above 30°C, while winters maintain a gentle chill, with lows ranging between 1-12°C throughout the year. Overall, Bertioga's temperature fluctuations are moderate, with an average annual temperature around 19°C.