Explanation
Yes. Snow has fallen in Brazil. Official meteorological records document snowfall in the country's south, including during the cold wave of late July 2021.
Brazil's National Institute of Meteorology reported snow across a broad area of the mountain regions of Rio Grande do Sul and Santa Catarina during that event. Reuters separately reported snowfall in southern Brazil, citing local accounts and meteorological reporting from Somar Meteorologia.
This confirms that snowfall occurs within Brazil; it does not mean that snow is widespread across the country or that it happens everywhere each winter. Because the question identifies no date or location, this check establishes historical occurrence rather than verifying a particular recent report, photograph or video.
Key takeaway
Snowfall in Brazil is real and documented, including in the mountainous south.