Jaguariuna's climate is mild with distinct seasonal variations. Winter, from June to August, brings chilly mornings and cool nights, but temperatures rise significantly during the day, averaging around 18-20°C. Autumn and spring are quite similar, with temperatures gradually increasing in March and April, then stabilizing until May, when it cools down again. Summer is hot, especially in September, with high temperatures often reaching up to 37°C, while winter's cold snaps can drop as low as 3°C.