Foz do Iguacu experiences a subtropical climate with mild winters and hot, humid summers. The winter months of May to July are cool, with average temperatures ranging from 5-16°C, making it the coolest period of the year. Spring, from August to October, brings moderate temperatures, averaging around 20-23°C, while autumn, from November to March, is warm, with averages between 25-28°C. Summer months, December and January, are hot, with average highs reaching up to 39°C. The temperature variations throughout the year create a distinctive seasonal pattern in Foz do Iguacu.