September is Como’s second act. Lake at 22–24°C (warmer than June), summer crowds gone after school starts, and the first autumn colors on the upper mountains.
Plan this trip →Warmest lake water of the year. Swimming through late September. Villas still open. Ferries full schedule. Sagra della Misoltina (Bellano): festival celebrating the traditional sun-dried lake fish. Hiking above Varenna and Menaggio without the heat.
Shoulder by mid-Sept. Hotels €90–180/night (dropping weekly). Book 2–3 weeks ahead. Best value-to-weather ratio.