Koh Bida Nok⚠ data unverified
Thailand · Asia · Andaman Sea
4.2
/ 5
★★★★☆
Wall-and-reef diving with 4 standout species — a great fit for most divers.
Level Intermediate
Marine life
4.5
Visibility
4.0
Accessibility
3.7
Facilities
4.0
Pros
- Excellent visibility up to 20 m
- 4 standout marine species
- Best conditions in Nov–Apr
Cons
Best for
Plan your trip
$$🛏️
Suggested stay
2–3 days
💸
Cost level
Relative cost $$ · ≈ $96/day
Developed dive town, but options are limited and prices average.
🏨
Where to stay
Day-boat diving based at a dedicated dive resort or dive centre. A manageable dive base with a handful of operators.
🧭
Real daily cost in Thailand
Around $96/day per person · food $29 · hotel $74
Good to know
- Gentle conditions — great for long, unhurried dives.
- An Advanced Open Water certification is recommended.
- Prime season is Nov–Apr.
📷 Generated via AI (photorealistic) · AI-generated
Depth
3–30 m (10–98 ft)
Visibility
20 m (66 ft)
Water temp
27–30°C (81–86°F)
Current
Mild
Best season
Nov–Apr
Certification
Open Water
Dive shops
8
Why go
Koh Bida Nok sits in the Andaman Sea off Thailand, a wall and reef system where dives drop from shallow tops into deeper water. Dives run to 30 m with around 20 m visibility, gentle currents and sea temperatures of 27–30°C. Marine highlights include turtles, reef fish, leopard sharks and corals. Best season is Nov–Apr, typically reached by boat. A good choice for divers with some experience. Open Water certification is sufficient for most sites here.
Site type
ReefWall
Access
Boat
Came hoping for turtles, and it delivered. The 20 m visibility kept everything sharp.
A great teaching site: the 20 m visibility and the gentle profile let newer divers build confidence.
Great diving, great vibe. A place worth coming back to.