Koh Rong

Koh Rong offers a relaxed and accessible diving experience with over 30 dive sites scattered around the island and its smaller neighbor, Koh Rong Samloem. This Cambodian gem is particularly renowned for its vibrant shallow reefs and incredible macro life, making it a paradise for underwater photographers and those who appreciate the smaller critters. The dive sites are typically characterized by gentle slopes, coral gardens, and artificial reefs, providing a diverse underwater landscape that is perfect for novice divers and those looking to gain new certifications in a beautiful, laid-back setting.

Diving conditions in Koh Rong are generally favorable year-round, with warm waters and mild currents, creating a safe and comfortable environment for all skill levels. The sheltered bays ensure that diving is possible even during the wetter season. Visitors should come to Koh Rong for its affordability, pristine natural beauty both above and below the water, and the opportunity to see a unique mix of marine life, from colorful nudibranchs and seahorses to larger schooling fish. It's an ideal destination for a tranquil dive holiday away from the crowds.

Top Sites

Frequently Asked Questions

What's the most popular dive site in Koh Rong, Cambodia?
While many sites are popular, the dive sites around the neighboring island of Koh Rong Samloem are often highlights. "Secret Garden," for example, is famous for its incredible macro biodiversity. Divers love exploring its sandy bottoms and coral bommies to find seahorses, nudibranchs, and various shrimp. Its shallow depth and calm conditions make it accessible to all levels, contributing to its popularity for both day trips and training dives.
What are the good and less popular dive sites in Koh Rong, Cambodia?
Well-known sites in Koh Rong, Cambodia include the coral gardens and artificial reefs around Koh Rong Samloem, prized for macro life. For a less-crowded experience, ask your dive center about exploring the rocky outcrops on the western side of Koh Rong. These sites can have stronger currents but may reward divers with larger schools of fish like barracuda and trevally. Exploring these more remote spots often requires specific conditions and a knowledgeable local guide.
What water temperature is it like throughout the year diving in Koh Rong, Cambodia?
The water temperature in Koh Rong, Cambodia is warm and pleasant all year, typically ranging from 27°C to 31°C (81°F to 88°F). The warmest months are usually from March to May, when temperatures can peak at 31°C. During the cooler, drier season from November to February, the water temperature might dip slightly to around 27-28°C, which is still very comfortable for diving.
When is the best time to visit Koh Rong, Cambodia?
The best time to dive in Koh Rong, Cambodia is during the dry season, from November to May. During these months, you can expect calmer seas, better underwater visibility (often 10-20 meters), and plenty of sunshine. While diving is possible year-round, the rainy season from June to October can bring reduced visibility and rougher surface conditions, though the sheltered bays around the islands still offer good diving opportunities.
What's the visibility like during the dive season in Koh Rong, Cambodia?
During the peak dive season in Koh Rong, Cambodia (November to May), underwater visibility is generally good, averaging between 10 to 20 meters (33 to 66 feet). It can sometimes exceed 25 meters on exceptionally clear days. During the rainy season (June to October), runoff from the islands and plankton blooms can reduce visibility to a range of 5 to 10 meters (16 to 33 feet), particularly at sites closer to the mainland.
Are there any seasonal migrations or special events (e.g., manta rays, whale sharks) in Koh Rong, Cambodia?
While Koh Rong, Cambodia is not a major migration hub, there are occasional and exciting seasonal sightings. Lucky divers might encounter whale sharks between December and May, although these encounters are rare and not guaranteed. The area is more renowned for its consistent resident macro life. Plankton blooms during certain times of the year can attract larger filter feeders, increasing the chance of a special encounter.
What marine life can I expect to see in Koh Rong, Cambodia?
Koh Rong, Cambodia is a fantastic destination for macro enthusiasts. You can expect to see a wide variety of nudibranchs, seahorses, pipefish, and crustaceans like boxer shrimp. The reefs are also home to colorful reef fish, including parrotfish, butterflyfish, and anemonefish. On artificial reefs and rocky sites, you might spot schools of fusiliers, barracuda, and large groupers. Stingrays are also commonly seen resting on the sandy bottoms.
What thickness wetsuit should I wear in Koh Rong, Cambodia?
With water temperatures in Koh Rong, Cambodia staying between 27-31°C (81-88°F) year-round, a wetsuit is often optional. However, for thermal protection on multiple dives, a 3mm shorty or a full-length 2mm or 3mm wetsuit is highly recommended. Some divers are comfortable in just a rash guard, but a thin wetsuit provides comfort and a barrier against potential stings from jellies or coral.
How do I get to Koh Rong, Cambodia?
To get to Koh Rong, Cambodia, you first need to travel to the coastal city of Sihanoukville (KOS airport). From Sihanoukville's Serendipity Pier or Ochheuteal Pier, several ferry companies operate daily services to Koh Rong and Koh Rong Samloem. The fast ferry journey takes approximately 45-60 minutes. It's advisable to book your ferry ticket in advance, especially during the high season, to secure your spot.
Should I book a liveaboard or stay on shore in Koh Rong, Cambodia?
Staying on shore is the standard and most practical option for diving in Koh Rong, Cambodia. The island has numerous dive centers offering daily trips to the 31+ local sites, all of which are easily accessible by day boat. There are currently no dedicated liveaboards that operate exclusively around Koh Rong, as the dive sites are clustered closely together. A shore-based stay allows you to enjoy both the diving and the relaxed island life.
All Dive Sites in Koh Rong (31)
AtlantisBack DoorCastleCoral BayCoral Bay 2Corner BarDive Shop PointEast ReefExplosion ReefFabrices Monkey IslandFly ByGiraffeKhmer GardenKoh MoanKoh Prins WestKoh Rong CornerKoh Touch 1Koh Touch EastKoh Trang OlKoh VealLast ChanceLast TreeLighthouseMddle TreeMonkey CaveMpai BayNudibranch HeavenRocky RidgeSponge GardenSunset Beach CornerVietnamese Bay