12 Emerging Southeast Asian Islands That Belong on Your Must-Explore List

9. Pulau Weh, Indonesia

Where the Indian and Andaman Oceans meet, Pulau Weh beckons divers and serenity-seekers with dramatic volcanic landscapes, crystalline lagoons, and abundant sea life. The island’s position makes its water especially rich in plankton and nutrients, attracting schools of fish, sea turtles, and occasional whale sharks. Pulau Weh is laid-back by design: the main village of Sabang features cozy guesthouses and simple seafood eateries, while the surrounding coastline offers secluded coves and palm-fringed beaches. The island’s interior harbors a dormant volcano, hot springs, and rare birds. Dive centers cater to all skill levels, spotlighting pristine reefs and wrecks just offshore. To get there, travelers typically fly to Banda Aceh, then board a ferry for the final stretch. May through September is the most reliable for weather and calm seas. Pulau Weh is a top pick if you value outstanding biodiversity and prefer islands where local hospitality feels as genuine as the scenery.