
Diving atKoh Moan (Cambodia)
Visibility at Koh Moan typically ranges between 5 to 10 meters, influencing how divers experience this uninhabited "Chicken Island." Boat entry is standard for accessing its significant coral reef system, with depths suitable for various certification levels, descending up to 20 m / 65 ft. Divers approach this site expecting moderate clarity, emphasizing the intricate details of the reef and its inhabitants rather than expansive panoramas.
Current morning readings from Koh Moan indicate an air temperature of 29°C. Surface wave heights are averaging around 0.3 m at this time. These local measurements provide a baseline for your daily dive planning.
Dive Site Location & Key Facts
Everything you need to know about this dive site.
Dive Site Overview
Imagine arriving by boat at an uninhabited island known as Koh Moan, or "Chicken Island." This Cambodian dive site invites exploration of its extensive coral reef ecosystem, primarily reached by boat. Depths here reach a maximum of 20 m / 65 ft, accommodating PADI Open Water and Advanced Open Water divers.
Recent conservation efforts have positively influenced the health of these reefs; Marine Conservation Cambodia has notably worked to curb trawling, leading to improved habitat quality and better visibility. While conditions aren't always extreme in clarity, often varying between 5 and 10 meters, the site offers consistent reef diving. The marine environment is dynamic, with glimpses of pelagics like sharks, whales, and dolphins, alongside regular turtle sightings.
Local dive operators, mainly from Sihanoukville, facilitate trips, though divers should research operators, considering Scuba Nation's long-standing reputation. The current state of Koh Moan’s reefs reflects ongoing dedication to protecting Cambodia's underwater heritage.
Koh Moan
Conditions are Good
Best Dive Window
Optimal conditions expected
Current conditions near Koh Moan show 29° air, 31° sea temperature, 0.4 m waves, and 28 km/h wind. Forecast data is refreshed regularly to ensure accuracy.
Best Time to Dive
Planning your visit to Koh Moan involves considering the distinct seasons that shape dive conditions. The period from January to April, and again in December, consistently earns an "Excellent" dive score. During these months, air temperatures hover around a comfortable 27-29°C (81-84°F), while rainfall remains minimal, often less than 3 mm. Wave heights are generally lower, and winds are moderate, contributing to more predictable surface conditions. Water temperatures, not consistently reported with exact values, typically reflect the warm tropical air. As the year progresses from May to November, dive scores shift to "Good." This reflects an increase in wave heights, wind speeds, and notably, rainfall, which can reach up to 17 mm in September. Visibility can fluctuate more during these wetter, windier months. For optimal comfort and calmer seas, targeting the drier, less windy periods is advisable.
PEAK SEASON SCORE
Scores combine air & water temps, waves, wind & rainfall for overall conditions.
BEST MONTHS TO DIVE
Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.
Dive Experience & Conditions
Descending at Koh Moan offers a primarily reef-based experience, with its profile suitable for Open Water divers. Underwater visibility typically ranges from 5 to 10 meters on most dives, though this varies with seasonal conditions. This moderate visibility encourages divers to focus on macro details within the coral reef system. The site offers boat entries into saltwater, where the water temperature is warm, reflecting the tropical climate. Currents are not consistently reported but generally align with regional patterns that can vary. While the overall profile is relatively shallow, the extensive reef structure provides ample opportunity for exploration across its suitable depth limits.
Dive Difficulty & Safety Guidelines
Navigating Cambodia's dive scene, particularly around Koh Moan, presents an opportunity to prioritize responsible dive practices. While no specific site hazards are consistently reported, divers should always assess local conditions, including currents and visibility, before entering the water. Selecting a reputable dive operator is crucial; historical reviews suggest caution with certain Sihanoukville-based companies, while Scuba Nation is noted for its experienced owners and long operational history. Proper certification, like PADI Open Water or Advanced Open Water, is essential for these depths. Remember to maintain neutral buoyancy to protect the coral reefs, especially given ongoing conservation efforts. Always dive within your training and comfort limits.
Recommended Equipment
- Dive Computer
- DSMB
This gear list is based on verified equipment signals for Koh Moan, Cambodia. Always confirm final gear choices with your dive operator, guide, or liveaboard.
Recommended Dive Suit
Individual comfort in the water can vary significantly from diver to diver, even under the same conditions.
For most recreational dives, dive skin or rash guard should provide comfortable protection. A hood or vest is suggested for sensitive divers due to surface winds. Forecast trends indicate little change in overall diving conditions during the next few days.
Divers heading to Koh Moan today should expect water temperatures around 31°C (87°F). Surface air temperatures are resting at 29°C (85°F).
Due to technical issues with our weather providers, live updates are temporarily delayed. The data above reflects the conditions at the time of the last successful fetch.
Emergency & Medical Support
Essential information to help you plan your dive trip to Koh Moan.

Hyperbaric chambers are a critical part of dive safety infrastructure. Availability varies significantly by region, and not all dive areas have immediate access.
Before diving, it's recommended to:
- confirm nearest medical facilities
- check emergency procedures with local dive operators
- ensure dive insurance covers evacuation if required
Divers Alert Network
Diving emergency assistance available through DAN World.
+1-919-684-9111- 24/7 emergency hotline
- Diving medical assistance
- Evacuation coordination
Emergency contacts are provided for reference. Always verify local emergency services before diving.
Marine Life at Koh Moan
The underwater landscape of Koh Moan supports a diverse array of marine inhabitants across its extensive coral reef. Divers frequently encounter fantastic macro life, often requiring a keen eye and a knowledgeable guide to spot well-camouflaged creatures like seahorses, including tiny juveniles. Beyond the reef's intricate details, there's potential for encounters with larger marine animals. Common sightings include various species of sharks and turtles. Occasionally, lucky divers might spot dolphins or even whales, adding an exciting pelagic dimension to the reef exploration.
Dive Sites Near Koh Moan
View all dive sites in CambodiaDiscover more underwater gems in this area.
Dive Centers Near Koh Moan
Working Hours
Today: 08:00 - 18:00
Scuba Nation Diving Centre Cambodia
Koh Rong Dive Center
Cambodia Diving Group
Blue Lagoon Divers Cambodia
Nearest Airports
Nearest airports to help plan travel to this dive area.
Search Flights
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Search Flights on ExpediaFrequently Asked Questions
What kind of island is Koh Moan?
Koh Moan is an uninhabited island, also known as "Chicken Island." It is characterized by a large coral reef system that surrounds it, making it a popular dive destination.
What is the maximum diving depth at Koh Moan?
The maximum diving depth at Koh Moan is 20 m / 65 ft. This depth makes the site suitable for divers with PADI Open Water certification and above.
What marine life can I expect to see?
Divers can expect to see fantastic macro life, including well-camouflaged seahorses. There are also common sightings of sharks, turtles, and occasionally dolphins or whales.
What are the typical visibility conditions?
Underwater visibility at Koh Moan typically ranges between 5 to 10 meters on most dives. Conditions can vary depending on the season and prevailing weather.
What dive certifications are recommended for Koh Moan?
PADI Open Water Diver and PADI Advanced Open Water Diver certifications are recommended. These ensure divers have the necessary training for the site's depths and conditions.
How do conservation efforts impact diving at Koh Moan?
Marine Conservation Cambodia has actively worked to stop trawling around local reefs, including areas near Koh Moan. This has contributed to improved reef health and better visibility by reducing habitat destruction and siltation.
How do I access Koh Moan for diving?
Access to Koh Moan for diving is primarily by boat. Dive operators typically run trips from Sihanoukville or nearby islands like Koh Rong Samloem.
Are there recommended dive operators for this area?
Scuba Nation is noted for its experienced owners and long operational history in Cambodia. Angkor Dive Cambodia also works closely with conservation efforts and local villages. Divers should research operators and read recent reviews before booking.
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Koh Moan
Conditions are Good
Best Dive Window
Optimal conditions expected
Current conditions near Koh Moan show 29° air, 31° sea temperature, 0.4 m waves, and 28 km/h wind. Forecast data is refreshed regularly to ensure accuracy.











