Whether you want to collect beach glass or watch the sunset, Plage de Babouillat is a spot you might want to check out, located 15.7 mi (25.3 km) from central Koumac. If you want to continue walking by the waves, head to Plage Ouest and Plage Est, both within a short walk.
Sightseeing doesn't mean you have to blow the budget. For some things to do in Koumac, enjoy the outdoors at Plage de Pandop or Koumac Caves. Don't forget to include a visit to plage de Tangadiou.