Koh Tan
เกาะตัน
Samui's Snorkeling Island
A charming uninhabited island just 15 minutes south of Koh Samui with coral reefs, turtles, and zero crowds.
Depth Range
1–8m
Site Type
island reef
Koh Samui & Nearby
Visibility
5–15m
27–30°C
Getting There
15 min longtail from south Samui
~3 km south of Koh Samui
18 May
19 May
20 May
21 May
22 May
23 May
24 May
Marine Life
Notable Features
- • Closest reef to Koh Samui
- • Turtle encounters
- • Uninhabited island
- • Regular trips from our base
Best Time to Visit
About Koh Tan
Koh Tan is a small, forested island just off Koh Samui's south coast — the closest proper snorkeling destination from our home base. The northern reef stretches between Koh Tan and tiny Koh Madsum, with healthy coral patches harboring turtles, stingrays, and a variety of reef fish. The island has a few homestays but remains largely undeveloped, offering a genuine escape from Samui's tourism.
Tips
We run trips here regularly. Combine with Koh Madsum for a full day. Best snorkeling on the north/northeast side.
Experience Required
None. Perfect for beginners and families.
Location
GPS: 9.3830°N, 99.9670°E
Freedive Koh Tan With Us
We run trips to Koh Tan from Koh Samui. Maximum 3 students per trip. All equipment and safety gear provided.