From November to May, the only way to access Belo-sur-Mer is by sea. Local pirogues ply the route, but journey times are entirely dependent on winds. It's much faster (2½ hours), but also more expensive, to arrange a motor boat transfer with one of the tour operators in Morondava or Ecolodge du Menabe in Belo.
Access to Belo-sur-Mer by road is only possible by 4WD from May to November. There are irregular taxis-brousses (Ar30,000, four hours) between Belo-sur-Mer and Morondava in 4WD bâchés.