Weather
As Brazil lies in the Southern Hemisphere, its seasons are the exact opposite of what Northern Hemisphere residents are used to: summer is December through March and winter June through September. Within the country the climate varies considerably from region to region. In most of Brazil the summers are very hot. Temperatures can rise to 43°C (110°F) with high humidity.
The Northeast (from Salvador north) is warm year-round, often with a pleasant breeze coming off the ocean. Temperatures hover between the upper 20s to mid-30s Celsius (low 80s and mid-90s Fahrenheit).
As befits a rainforest, the Amazon is also hot and humid year-round, with temperatures hovering around the mid- to high 30s Celsius (mid-90s to low 100s Fahrenheit). The dry season lasts from June to December and is often called "summer" by the locals as it is hot and sunny. As the rivers recede, beaches and islands reappear. The wet season typically runs from December to May and is referred to as "winter." The humidity is higher in the rainy season, building up over the course of the day to produce a heavy downfall almost every afternoon. Even then, however, mornings and early afternoons can be clear and sunny.
The Pantanal is very hot in the rainy season, with temperatures climbing over the low 40s Celsius mark (100°F). Most of the rain falls December through March. The driest time of the year is May through October. In these winter months things cool down considerably, though nighttime temperatures will seldom drop below 20°C (68°F).
Rio has very hot and humid summers -- 38°C (100°F) and 98% humidity are not uncommon.
São Paulo has a similar climate to Rio's, hot in the summer. Brazil's biggest holidays are New Year's (JAN. 1) and Carnaval (March 1-5 / 2014).
