Watersports are popular in Lugano; you can also bike or play golf and tennis.
Boating -- You can rent rowboats and motorboats along the lakefront.
Sailing -- Go to Circolo Velico, Lago di Lugano, Foce Cassarate (tel. 091/971-09-75; www.cvll.ch), which charges 15F to 20F per hour or 55F to 100F for a half-day, depending on the size of the boat.
Scuba -- Try Lugano-Sub, Riva Paradiso 23 (tel. 091/994-37-40; www.luganosub.ch).
Swimming -- The Lido (tel. 091/971-40-41) is a sandy stretch of beach along the lake. You can also relax on the lawn or eat at the cafeteria on the terrace. Admission to the Lido is 10F for adults, 5F for ages 9 to 20, and 3F for children 8 and under. Rental of a cabana costs another 20F, plus a 10F deposit. The beach is open in the summer daily from 9am to 7:30pm. In addition, many hotels have heated pools, some with salt water.
Water-Skiing -- The Club Nautico-Lugano, via Calloni 9 (tel. 091/994-12-56), between Lugano and Melide, charges 150F per hour, instruction included.
Windsurfing -- You can windsurf on the lake at Club Nautico-Lugano, via Calloni 9 (tel. 091/994-12-56), between Lugano and Melide. The cost is 20F per hour.