Four days and nights that close the holiday season and fill Old San Juan wall to wall: salsa, reggaetón, bomba y plena and rock en español across multiple stages, artisan markets, food the length of every block, and vejigante mask processions. Held the third weekend of January; the 2027 dates are confirmed by the municipality in the fall. Book San Juan lodging early or plan to stay in Santurce and walk in.