The weather and climate in Brazil are quite varied due to its large size. The country has five main climatic zones. While some areas are typically hot all year round, others are more subject to seasonal variations.
São Paulo and Brasília are situated on a plateau, enjoying mild weather, with average temperatures around 67°F (19°C) for São Paulo and 70°F (21°C) for Brasília. Coastal regions and cities, like Rio de Janeiro, have warmer climates. Temperatures in Rio are often around 86°F (30°C) in summer. You should stay hydrated and indoors on especially hot days. The yearly average is a pleasant 80°F (26°C).
The subtropical climate in the south means that summers are hot and winters can get slightly chilly. Temperatures from July to August can drop below freezing. You may occasionally find yourself waking up to morning frost.
The Amazon Basin experiences warm and wet weather all year round. It is known for incredibly high levels of humidity, and the temperature tends to hover around 77°F (25°C). The Equatorial Amazon gets a lot of rain from December to May, while June to October are the best months to travel to this region, as they are the driest.