Sao Jose dos Pinhais experiences mild winters, with temperatures ranging from -2C in July to 9C in April and September. Spring is characterized by moderate temperatures, gradually warming up from March's average of 22C to May's average of 16C. Summer brings warm days, with highs often reaching the mid-30s Celsius, while autumn sees a slight drop in temperature before winter sets in again. The coldest months are July and August, averaging around 13C, whereas the warmer months are December, January, and February, averaging above 20C.