Koh Phangan is only half an hour from Koh Samui by boat, and three and a half from the mainland port of Surat Thani. You can easily hop on one of the ferries that run more than once a day from either of these ports. To get to Surat Thani, you can take an overnight bus, but the easiest and most fun way to hit up the island is with likeminded travelers on one of our Island Hopping adventure tours and passes.
Over the Full Moon, of course! Koh Phangan is beautiful any time of year but its rainiest months are from July to October. During these times, you may get caught in sporadic downpours but on the flip-side, accommodation is cheaper and the beaches will be filled with less tourists. The hottest, sunniest months on the island are from March, through to May.