Racha & Maithon Island (8 hrs)
Look, if you've got eight hours and want to actually see what makes Phuket's waters special, Koh Racha Yai deserves serious consideration. The snorkeling here puts most other spots to shame—giant grouper, butterflyfish schools, and visibility that'll make you forget you're in Thailand's busiest waters. Thailand proves that turquoise has at least 50 shades, and this island shows them all.
The Gao, an Azimut 55ft motor yacht, handles this run smoothly. What matters in Thai waters is having proper air-conditioned comfort since the tropical heat is no joke, and this boat nails that. Twelve guests maximum means you're not crammed in with half of Phuket's tourists—it's actually pleasant.
Thailand has a way of surprising you with weather shifts, so pack a waterproof bag for phones and cameras. Tropical showers here are warm and brief, honestly part of the real experience. November through February offers the most reliable conditions, but monsoon season (May-October) brings fewer crowds and that authentic local vibe if you can roll with occasional refreshing downpours.
Maithon Island works as your second stop—quieter than Racha, better coral in places, and the crew handles lunch setups with solid efficiency. It is recommended you bring reef-safe sunscreen; what happens underwater matters more than most people think.
Perfect choice for your Thailand yacht charter if you want decent diving, reasonable crowds, and a boat that actually feels like a proper vessel rather than a floating hotel room.