The Seasons of Brazil: A Study of Climatic Regionality and Meteorological Dynamics
This densely populated region has a true tropical seasonality. Summer brings torrential, often catastrophic, rainfall (e.g., flooding in São Paulo). Winter (June-August) is mild (15-20°C) and dry, with the occasional passage of friagens (cold fronts from the South) dropping temperatures suddenly. season in brazil
The seasons are defined by flood and ebb. The Summer (wet) transforms the Pantanal into a vast flooded plain, while Winter (dry) is extremely dry, with relative humidity dropping below 20%. The Brazilian "winter" here is a desert-like season. The Seasons of Brazil: A Study of Climatic
The only region with well-defined thermal seasons. Summer is hot (above 30°C), Autumn features foliage change (rare in Brazil), Winter brings frost, fog, and occasional snowfall (e.g., in São Joaquim). Spring is marked by severe thunderstorms and hail. The seasons are defined by flood and ebb
| City | Summer (Dec-Feb) | Winter (Jun-Aug) | | :--- | :--- | :--- | | Manaus (Amazon) | Very hot, heavy rain | Warm, less rain | | Salvador (NE Coast) | Hot, humid | Warm, pleasant | | Brasília (Central) | Rainy, thunderstorms | Dry, cool nights | | São Paulo (SE) | Rainy, humid (22-28°C) | Dry, mild (12-20°C) | | Porto Alegre (South) | Hot, storms (22-32°C) | Cold, foggy (8-18°C) |
This region experiences the most extreme seasonality regarding water. A very short, unpredictable rainy season (February to May) followed by an intense, almost rainless dry season (June to January). Winter here is paradoxically the driest time.
| Season | Months (approx.) | Meteorological Characteristics | | :--- | :--- | :--- | | | December – March | High heat, high humidity, intense convective rainfall (thunderstorms), risk of flooding. | | Autumn | April – May | Gradual cooling, first dry spells in the interior, fog in the South. | | Winter | June – September | Coldest temperatures (especially South), peak of the dry season in the tropics, frost risk in the South. | | Spring | October – November | Rising temperatures, return of rainfall, strong winds and occasional hail. |