The Phi Phi islands are the trip everyone imagines. With a little planning, your day can be extraordinary rather than exhausting.
The Phi Phi islands are the snorkeling trip everyone imagines when they picture Thailand — limestone cliffs, emerald lagoons, and reefs full of life. With a little planning, your day on the water can be extraordinary rather than exhausting. Here's our cheat sheet.
When to Go
The best window is November to April, when the Andaman is calm and visibility can hit 20 metres. From May to October, the southwest monsoon brings bigger swells and many operators pause trips. If you're visiting in the green season, pick a calm-weather day and be flexible — the sea decides.
Start Early
The secret to a great Phi Phi day is beating the crowds. Boats that leave Phuket by 7am reach Maya Bay and Pileh Lagoon while the water is still glassy and nearly empty. By noon, those same spots are busy. An early start is worth every lost hour of sleep.
What to Pack
- Reef-safe sunscreen — standard sunscreen kills coral. This is non-negotiable.
- Your own snorkel mask — rental masks leak; a well-fitted mask changes everything.
- A dry bag — for phone, wallet, and a dry change of clothes.
- A light rash guard — sun protection that stays on in the water.
- Sea-sickness pills — even calm days can roll. Take one 30 minutes before departure.
- Cash — for national park fees and a cold drink on the boat.
Where the Fish Are
Pileh Lagoon is the postcard, but the best snorkeling is around Mosquito Island and Bamboo Island, where the coral is healthiest. Avoid standing on or touching the reef — it's a living animal, and a single kick can undo decades of growth.
A note on Maya Bay: it closes for a few months each year to let the ecosystem recover — check it's open before you plan. Our Phi Phi snorkeling tour times the crowds for you, packs the essentials, and keeps groups small so you actually get to see the fish, not the back of someone else's fins.