São Sebastião do Caí is a city located in the state of Rio Grande do Sul, Brazil, situated near the capital city of Porto Alegre. Founded on May 1, 1875, the municipality has a population of approximately 25,000 inhabitants.
The geography of the city is defined by the Caí River, which flows through its center. The river originates in the mountains of São Francisco de Paula and eventually empties into Guaíba Lake. The University of Caxias do Sul (UCS) serves as a primary educational institution within the municipality.
The local culture reflects the history of 19th-century settlement by German-speaking Europeans. While its presence in the public sphere has diminished since World War II, the German language remains integrated into daily family and community life throughout the region.