Brazil, the largest country in South America, experiences a summer season (December to March) characterized by high temperatures, intense solar radiation, and significant regional precipitation variability. Influenced primarily by the South Atlantic Convergence Zone (SACZ) and the seasonal migration of the Intertropical Convergence Zone (ITCZ), the Brazilian summer is not a monolithic period of heat and rain. This paper analyzes the distinct weather patterns across the five major geographic regions (North, Northeast, Central-West, Southeast, and South), discusses the atmospheric systems governing these patterns, and examines the associated phenomena, including heatwaves, urban flooding, and drought risks. The paper concludes with an assessment of how climate variability (El Niño, La Niña) and long-term climate change are reshaping the Brazilian summer. 1. Introduction
Summer in Brazil, which spans from December 21 to March 20, coincides with the country’s rainy season in most of its territory. Unlike the temperate summers of North America or Europe, the Brazilian summer is defined more by humidity and thermal discomfort than by extreme temperature spikes, though the latter are becoming more frequent. Given Brazil’s extensive latitudinal range (from 5°N to 33°S), the experience of summer varies dramatically: from the torrential, convective rains of the Amazon to the more temperate, well-defined storms of the southern states. Understanding these patterns is crucial for agriculture, water resource management, disaster preparedness, and tourism. weather in brazil in summer
The Dynamics of the Brazilian Summer: Climatic Characteristics, Regional Contrasts, and Socio-Environmental Impacts Brazil, the largest country in South America, experiences