May to June and again from September to October are great months for visiting Brazil. May to June represent the fall and edge into the Southern Hemisphere’s winter, which can still provide nice beach weather in destinations like Rio de Janeiro or allow you to visit places like the Amazon or the Pantanal.
September and October are mainly Brazil’s spring and generally great months for warm days on the beach, drier weather in the Amazon, and open floodplains along the Pantanal. By visiting during these months, you can find the best time to visit to explore ecosystems and weather influenced by the Tropic of Capricorn in the south and the Equator in the north.