Koh Samui
Koh Samui is the Gulf coast's most developed island — an easy international-airport entry point, calm family-friendly beaches, and a home base for day trips to Koh Phangan's Full Moon Party and Koh Tao's diving. Its dry season runs roughly December–September, opposite Phuket's Andaman-coast calendar — don't assume the same months apply. Budget from $30/day backpacking to $200+/day resort.
Think of Koh Samui as Phuket's more laid-back cousin on the other side of the country: its own international airport, resorts in every price bracket, and calm beaches — plus two wilder islands, Koh Phangan and Koh Tao, just a short ferry hop away for whenever you want to switch things up.
Best beaches on Koh Samui
| Beach | Best for |
|---|---|
| Chaweng | Nightlife and the busiest strip |
| Lamai | A quieter, slightly cheaper alternative to Chaweng |
| Bophut / Fisherman's Village | A relaxed base with a weekly night market |
| Choeng Mon | Families wanting a calm, shallow beach |
Day trips from Koh Samui
- Koh Phangan's Full Moon Party — the famous beach party on Haad Rin beach, held monthly around the full moon; ferries run frequently for day-trippers who don't want to stay overnight.
- Koh Tao diving — widely considered the cheapest place in the world to get PADI-certified, with excellent visibility; day trips or multi-day courses both run from Samui.
- Ang Thong Marine Park — a cluster of dramatic limestone islands, best seen on a full-day boat tour with kayaking and a viewpoint hike.
When to visit — this is not Phuket's calendar
The Gulf coast (Koh Samui, Koh Phangan, Koh Tao) has a different dry season than the Andaman coast (Phuket, Krabi) — roughly December through September, with the rainiest window around October–November. Booking Koh Samui using Phuket's seasonal calendar is a common and avoidable mistake.
What it costs
| Item | Approx. cost |
|---|---|
| Guesthouse, per night | $25–45 |
| Beachfront resort, per night | $120–300+ |
| Ferry to Koh Phangan | $8–15 round-trip |
| PADI Open Water course (Koh Tao) | $280–350 |
Common mistakes
- Planning Koh Samui around Phuket's dry-season months — the two coasts are on opposite calendars, so double-check the Gulf coast's own season before booking dates.
- Booking Chaweng expecting a quiet honeymoon vibe — it's the island's busiest, most nightlife-heavy strip; Choeng Mon or a quieter stretch of Lamai suits a calmer trip better.
- Skipping travel insurance that covers scooter riding — as elsewhere in Thailand, many standard policies exclude it by default.
How to save money on Koh Samui
- Stay a short walk back from the beach rather than beachfront — the price difference is often significant for a two-minute walk.
- Book the Koh Phangan or Koh Tao ferry directly with the operator (Lomprayah, Seatran) instead of through your resort, which often marks it up.
- Eat at Fisherman's Village or a local Thai restaurant instead of the resort's own restaurant for dinner — same quality, noticeably lower prices.
Where to stay in Koh Samui — our picks
Four Seasons Resort Koh Samui
Hillside pool villas over Ang Thong Bay — one of the most photographed resorts in Thailand.
Check availability on Booking.com ←ibis Bophut Koh Samui
Steps from Fisherman's Village in Bophut — walkable to restaurants and the weekly night market.
Check availability on Booking.com ←Lub d Koh Samui Chaweng Beach
Right on Chaweng Beach — the easiest budget option for the island's main strip.
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