The weather in Brazil is a diverse mix of sunny days, tropical breezes, and a significant rainy season. Depending on which region you are traveling to and what time of year your plans bring you to Brazil, you can expect large variations in the climate and temperature. Although the mountains have more noticeable seasons, the coastal temperatures are more mild, which makes it a great beach destination year-round.
Spring in Brazil: The spring runs from late September through late December, the same time as fall in the Northern Hemisphere. When traveling to the southern region of the Amazon region, you can expect the rainy season beginning in mid-October through March. In the central portion of the Amazon, the rainy season begins in December and runs to mid-May. Temperatures in Rio de Janeiro and Sao Paulo are still in the 80s at this time of year, and the beaches are pleasant.
Summer in Brazil: December through March marks the summer in Brazil and the peak tourist season for its major destinations, often due to crowds coming down from the colder parts of the Northern Hemisphere. High temperatures in Sao Paulo and Rio can easily reach into the 90s, and this is also the peak rainy season, so expect warm, wet weather. However, it’s still one of the best time for beach vacations and attending the famous Carnival.
Autumn in Brazil: The low season for the Rio area begins about halfway through the spring, in May, and continues long into October. For the coastal cities such as Salvador, Natal, Fortaleza, and Recife, temperatures average around 77 degrees. Rainy season in the coastal northeast region begins between April and May and lasts for about three months.
Winter in Brazil: Between June and September, travelers will find great deals on hotels and flights because of the off-peak season. Even though it is winter, the temperatures are still mild, particularly near the equator and along the coast, with highs still in the 70s in many areas, though there can be a significant amount of rain in destinations such as Recife during May, June, and July, with precipitation declining beginning in August.