Koh Samae San Cluster

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Military Island Diving

Intermediate Good Now

A military-controlled island cluster with some of the best visibility in the upper Gulf and pristine reef systems.

Depth Range

5–28m

Site Type

reef

Samae San

Visibility

10–25m

26–30°C

Getting There

30 min boat from Samae San pier

~25 km south of Pattaya

Live 7-Day Conditions — Koh Samae San Cluster

SST ~31°C

Mon
18 May

29

poor

25km/h W
1.4m

Tue
19 May

40

marginal

21km/h SW
1.3m

Wed
20 May

42

marginal

19km/h SW
1.0m

Thu
21 May

39

poor

25km/h S
0.8m

Fri
22 May

42

marginal

22km/h S
1.0m

Sat
23 May

40

marginal

23km/h S
1.0m

Sun
24 May

47

marginal

22km/h S
1.0m

Marine Life

Seahorses Nudibranchs Groupers Barracuda Sea Turtles

Notable Features

• Military-protected ecosystem
• Best upper Gulf visibility
• Exceptional macro life
• Pristine conditions

Best Time to Visit

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Peak Good Now

About Koh Samae San Cluster

The Koh Samae San cluster (including Koh Chuang, Koh Chan, and several smaller islands) is a military-controlled area that has inadvertently become one of the upper Gulf's best dive destinations. Restricted access means the reefs are in exceptional condition. Visibility often exceeds 15m — remarkable for the upper Gulf. Macro life is outstanding, with multiple seahorse species and rare nudibranchs.