One of Southeast Asia’s most overlooked coastlines.
Coastal Cambodia stretches along the Gulf of Thailand in the country’s southwest, running roughly from Koh Kong near the Thai border to the Vietnamese border in the southeast. It is a region of striking variety: the lively, rapidly developing port city of Sihanoukville; the unspoiled islands of Koh Rong and Koh Rong Sanloem; the slow, riverside charm of Kampot with its world-famous pepper; and the quiet, faded resort town of Kep with its celebrated Crab Market.
Whether you are a beach traveler seeking sun and seafood, an island hopper bound for Koh Rong, a slow traveler drawn to Kampot’s riverside calm, a food lover chasing the world’s best pepper and crab, or a family looking for an easy coastal escape, Coastal Cambodia offers a genuinely different side of the country.
What Coastal Cambodia is
Coastal Cambodia lies along the Gulf of Thailand in the country’s southwest, running roughly from Koh Kong near the Thai border to the Vietnamese border in the southeast. It is not a single administrative unit but a travel region that encompasses several provinces: Koh Kong in the northwest near Thailand, Preah Sihanouk (Sihanoukville) at the centre, Kampot and Kep in the east, and the coastal edges of Koh Kong and Kampot provinces.
The Cambodian coast has a layered history — from ancient trade routes and colonial ports to war, isolation, and modern revival. Under French rule, Kampot developed as an important trading port, and Kep became Cambodia’s premier seaside resort — a glamorous retreat for the colonial elite, with modernist villas lining the hills above the sea. Sihanoukville was developed in the 1950s under King Norodom Sihanouk as Cambodia’s first deep-water port.
During the Vietnam War era and the Khmer Rouge period (1975–1979), the coast suffered greatly. Kep’s villas were abandoned, Kampot’s economy collapsed, and Sihanoukville became isolated. From the late 1990s, Sihanoukville became a beloved stop on the Southeast Asia backpacker trail, while Kep and Kampot began to attract slow travelers. Since around 2016, Sihanoukville has undergone rapid development. Today, the coast is a region of contrasts — busy Sihanoukville, quiet Kep, and the increasingly popular riverside town of Kampot.
Highlights of Coastal Cambodia
From the lively beaches of Sihanoukville to the island escapes and riverside towns, these are the places that define Coastal Cambodia.
Sihanoukville is Coastal Cambodia’s largest city and main ferry port. Otres is the most relaxed of the town beaches — a long, tree-lined stretch of sand with low-key guesthouses and beach bars. Serendipity is the social heart of the coastline, and Independence Beach is quieter and more relaxed.
Koh Rong Cambodia’s Best-Known IslandKoh Rong is a large, mostly undeveloped landmass with white-sand beaches, clear water, and a lively backpacker scene around Koh Tuch village. Long Set Beach offers a quieter alternative, and night swimming with bioluminescent plankton is a memorable experience.
Koh Rong Sanloem The Quieter SisterKoh Rong Sanloem is Koh Rong’s quieter neighbour, popular with honeymooners, divers, and travelers seeking calm. Saracen Bay is the main beach, with a growing cluster of small resorts and guesthouses. Lazy Beach and Sunset Beach offer quieter alternatives.
Kampot Riverside Charm & PepperKampot is one of Coastal Cambodia’s most beloved slow-travel destinations — a riverside town of colonial shophouses, wide boulevards, and the world’s most prized pepper. Several pepper farms around town welcome visitors for tours and tastings. Bokor National Park is the region’s most dramatic natural attraction.
Kep Quiet Coastal TownKep is a quiet coastal town just 25 km from Kampot, known for its famous Crab Market, abandoned modernist villas, and easy access to Rabbit Island. The Crab Market is Kep’s most famous attraction — a lively waterfront market where local fisherwomen pull fresh crab traps directly from the sea.
Ream National Park Wild CoastReam National Park offers a wilder side of Cambodia’s coast — mangroves, beaches, and forest just 20 km from Sihanoukville. The park encompasses 21,000 hectares of mangrove forests, coastal beaches, coral reefs, and evergreen forest. Boat trips through the mangrove channels are a popular way to see the park.
Best time to visit Coastal Cambodia
Coastal Cambodia is warm year-round, but the coastal seasons are more pronounced than elsewhere in the country. The dry season from November to March is the best time for beach days and island trips.
Clear skies, calm seas, and comfortable temperatures. The best time for beach days, island trips, and diving. This is the peak season, so book accommodation and ferries in advance.
Hot and humid, but with calm seas and fewer crowds. Beach time is best in the morning and late afternoon. A good time for those who don’t mind the heat.
Heavy afternoon rains, rougher seas, and lush scenery. Ferries to the islands can be cancelled in rough seas. Lower prices and quieter beaches. Build flexibility into island plans.
Coastal Cambodia is a year-round destination. The region’s towns, markets, and national parks are open throughout the year. The Sea Festival usually rotates between coastal provinces in December.
Practical information
Getting there & around
By air: Sihanouk International Airport (KOS) is about 18 km from Sihanoukville town and receives a limited number of domestic and regional flights. Most international travelers arrive via Techo International Airport (KTI) in Phnom Penh and continue overland or by air. By road: From Phnom Penh to Sihanoukville (2.5–3 hours via the expressway), from Sihanoukville to Kampot (2–2.5 hours), from Kampot to Kep (20–40 minutes), from Vietnam (Ha Tien) about 45 minutes to Kampot.
Ferries and speedboats connect Sihanoukville Port with Koh Rong and Koh Rong Sanloem multiple times daily. Journey times range from about 45 minutes to 1 hour 30 minutes depending on the operator and destination. Within the coast, tuk-tuks, motorbike taxis, and ride-hailing apps work in most towns. Bicycles and motorbikes are ideal for the countryside around Kampot and Kep.
Good to know
- — Beachwear is fine on the sand; cover shoulders and knees in town and at temples
- — Swim where lifeguards are present; be aware of strong currents during the green season
- — Use reef-safe sun protection when swimming near coral
- — US dollars and Cambodian riel are both used; small bills are essential
- — Check ferry schedules and sea conditions before booking island trips in the green season
Other places nearby
Coastal Cambodia sits along the Gulf of Thailand, within easy reach of Phnom Penh and the rest of the country.
Cambodia
The full Cambodia guide — Siem Reap, Angkor, Phnom Penh, and everything else worth knowing.
Explore Cambodia → Region · Central CambodiaCentral Cambodia
The heartland of Cambodia — Phnom Penh, the Mekong, Tonle Sap, and the region’s river towns.
Explore Central Cambodia → City · Phnom Penh MunicipalityPhnom Penh
Cambodia’s capital on the Mekong, 2.5–3 hours from Sihanoukville via the expressway.
Explore Phnom Penh → City · Siem Reap ProvinceSiem Reap
The gateway to Angkor Wat, often combined with Coastal Cambodia on a full itinerary.
Explore Siem Reap →Questions About Coastal Cambodia
Where is Coastal Cambodia?
Coastal Cambodia stretches along the Gulf of Thailand in the country’s southwest, running roughly from Koh Kong near the Thai border to the Vietnamese border in the southeast.
What is Coastal Cambodia famous for?
Coastal Cambodia is famous for its beaches including Otres and Serendipity in Sihanoukville, the islands of Koh Rong and Koh Rong Sanloem, the riverside town of Kampot with its world-famous pepper, quiet Kep with its Crab Market, and Ream National Park.
How many days do you need for Coastal Cambodia?
Five to seven full days is ideal for most travelers. Five days covers Sihanoukville, an island escape, Kampot, and Kep. Seven days allows a slower pace with diving, Ream National Park, and extra island time.
Is Coastal Cambodia worth visiting?
Yes, with the right expectations. Sihanoukville’s town beaches have changed dramatically due to development, but Otres Beach, Koh Rong, Koh Rong Sanloem, Kampot, and Kep remain beautiful and rewarding coastal escapes.
What are the best things to do in Coastal Cambodia?
Relax on Otres Beach, take a boat to Koh Rong or Koh Rong Sanloem, explore Kampot‘s pepper farms and Bokor National Park, visit Kep’s Crab Market, cycle through the countryside, and explore Ream National Park.
What is the best time to visit Coastal Cambodia?
November to March offers the best beach weather with clear skies and calm seas. The green season from May to October brings occasional heavy rain but also greener scenery and lower prices.
How do you get around Coastal Cambodia?
The Phnom Penh–Sihanoukville Expressway connects the capital to the coast in 2.5–3 hours. From Sihanoukville, travelers can reach Kampot (2–2.5 hours) and Kep (about 2 hours), or take ferries to Koh Rong and Koh Rong Sanloem from the port.
Can Coastal Cambodia be combined with Phnom Penh?
Yes. The Phnom Penh–Sihanoukville Expressway makes the journey fast and comfortable at 2.5–3 hours. Most travelers combine Coastal Cambodia with Phnom Penh and Siem Reap on a full Cambodia itinerary.
Discover Cambodia’s Gulf coast.
Coastal Cambodia works best as a 5–7 day journey — Sihanoukville, an island escape, Kampot, and Kep. Our specialists can arrange transport, ferries, hotels, and an itinerary that suits your pace.
Start Planning →Cambodia coastal expertise, on the ground.
If you are building Cambodia programs that include Coastal Cambodia or the Gulf of Thailand, we can support you with local DMC services, vetted hotel partners, and confidential trade rates across the region.
Visit the Trade Page →The Gulf of Thailand shoreline.
From the island escapes of Koh Rong to the riverside calm of Kampot and the famous crab of Kep, Coastal Cambodia is one of Southeast Asia’s most rewarding — and most overlooked — coastlines.