Rio de Janeiro, or simply Rio, is the second-most populous city in Brazil and the sixth-most populous in the Americas. Rio de Janeiro is the capital of the state of Rio de Janeiro, Brazil's third-most populous state, after São Paulo and Minas Gerais. Part of the city has been designated as a World Heritage Site, named "Rio de Janeiro: Carioca Landscapes between the Mountain and the Sea", by UNESCO on 1 July 2012 as a Cultural Landscape.
Best Times to Visit Rio de Janeiro The best time to visit Rio is between December and March when the weather is warm and sunny enough to hit the beaches. The city's seductive samba beat and incredible panoramic views last year-round but arrive in February to experience Carnival.