As autumn officially begins in Brazil, the metropolitan area of São Paulo is expected to feel the effects of the season later than usual. Meteorological institutes predict that a significant cold front, characterized by a powerful polar air mass, will not arrive until the second half of May. This delay is likely to mean continued warm and humid conditions typical of summer for the month of April, with temperatures remaining elevated and occasional afternoon thunderstorms expected.

Adilson Nazário from the Municipal Emergency Management Center (CGE) remarked that according to extended weather forecast models, intense cold air masses will only make an appearance later in the month of May. Until then, residents can expect warmer weather and higher humidity levels. As such, São Paulo will experience a gradual transition into autumn rather than an abrupt shift in climate, challenging the typical expectations associated with this time of year.

The implications of this weather pattern extend beyond mere comfort; they hold significance for local agriculture and energy consumption. Farmers may need to prepare for fluctuations in crop cycles, while energy providers could see unexpected demand as warmer weather persists later into the season. Understanding these trends can help residents and authorities better prepare for the changes that come with autumn in Brazil.