Sao Bernardo do Campo's climate is characterized by mild winters, with temperatures rarely dipping below 0°C. Spring brings gradual warming, with highs reaching up to 33°C in March and April, but averaging around 20-23°C. Summer is warm, with temperatures often soaring above 30°C from September to November. Winters are cool, with lows occasionally falling below 10°C, while the rest of the year experiences mild conditions, with average temperatures ranging from 15°C to 24°C. The temperature fluctuations throughout the year are moderate, with little extreme variation between seasons.