Similan Islands Diving Season

Similan Island Diving Season

Similan Islands Diving Season

Scuba day trips and overnight trips run from October through to May, with the very best conditions existing from November to April. Outside of these months, surface swells can adversely affect conditions. From May to August, the weather is often better in the Gulf of Thailand, so you might consider day trip diving in Koh Samui, although local diving around Phuket and Phi Phi continues year round too.

The Similan Island liveaboard season runs from early October to mid May, but there are a limited number of cruises all year round.