If you’ve got romance on your mind, Thailand offers wonderful options for private moments on beaches and in coves or for exploring new experiences together, Koh Tao is considered one of the best places in the world to learn scuba diving. Although diving is possible almost all year round, the waters are clearest from July to September.
The reefs are calm and shallow, perfect for novice divers, and this is one of the few places where you can spot a whale shark as well as tropical fish, reef sharks and barracudas. You could stay in accommodation offered by your scuba-diving school or in a bungalow or in one of the growing number of upscale resorts that line the shores of this turtle-shaped island.
With hotels suffering limited communication networks and electricity cuts, Koh Tao still has the feel of being off the tourist trail, and, if off beat adventure is what you want, this is probably the perfect place (fly into Koh Samui Airport, and take a high-speed ferry to Koh Tao).