Guaratingueta's climate is characterized by mild winters and warm summers. The winter months, May to July, are the coolest with temperatures ranging from 1-31°C, averaging around 16°C in July, making it the coldest month. Spring and autumn seasons are relatively mild, with temperatures gradually increasing towards the warmer summer months. Summer, which spans from September to November and December, is hot and humid, with temperatures often reaching up to 38°C in September. The temperature variation throughout the year is quite significant, but overall Guaratingueta experiences a warm and subtropical climate.