Manaus鈥 best beach has fine white sand and tea-colored water, and can be coupled with a visit to the Museu do Seringal for a nice city escape. Like all river beaches, Lua is biggest when the water is low (September to December). Beach shacks serve fish and beer at tables set up along the water.
Catch a boat to Praia da Lua (R$5, 10 minutes) from Marina Davi, just past Ponta Negra. Take bus 120 or 121 (R$3, 20 minutes) to the turnaround, and then walk or wait for the free 鈥楨special鈥 bus to the marina.