Overview
Important geographic note: Sihanoukville — also known as Kampong Som — is located in Cambodia, on the Gulf of Thailand coast. It is not in Thailand or Vietnam. This guide reflects that reality. Travelers who may be thinking of southern Thai beach towns (such as Hua Hin or Pattaya) or Vietnamese coastal cities (such as Da Nang or Vũng Tàu) should consult separate guides for those destinations.
Sihanoukville sits roughly 230 km southwest of Phnom Penh and serves as Cambodia's main deep-water seaport as well as the gateway to several offshore islands, most notably Koh Rong and Koh Rong Sanloem. The city itself has changed considerably over the past decade and the urban core reflects ongoing large-scale development. Many independent travelers now pass through Sihanoukville primarily to catch ferries to the islands rather than to stay in the city itself.
The surrounding Preah Sihanouk Province retains genuine natural appeal — forested hills, undeveloped coastline in places, and islands with clear water and limited infrastructure. Visitors willing to look beyond the busiest strips can still find quieter beaches and a functional, working port-town atmosphere.
Before You Go
Visas
Most nationalities require a visa to enter Cambodia. For current requirements, check TravelerPulse's Visas section and the official Cambodian Ministry of Foreign Affairs or the e-Visa portal. Do not rely on third-party summaries for entry requirements.
Health
Consult a travel health clinic at least four to six weeks before departure. Hepatitis A and typhoid vaccines are commonly recommended for Cambodia travel. Check current malaria and dengue advisories with your national health authority; risk levels vary by area and season. Ensure your travel insurance covers medical evacuation, as facilities in Sihanoukville are limited compared to Phnom Penh.
Practical prep
- US dollars are the functional day-to-day currency for most tourist transactions; carry small bills.
- ATMs are available in the city center but verify surcharge rates locally.
- Download offline maps before arrival — connectivity on ferries and islands can be unreliable.
- Ferry schedules to the islands change seasonally; verify departure times and book ahead during peak season (December–January).
Getting There
By air
Sihanoukville International Airport (KOS) receives a limited number of flights; check current routes with airlines, as service has fluctuated significantly in recent years. Phnom Penh International Airport (PNH) and Siem Reap International Airport are larger hubs with broader international connections. From Phnom Penh, Sihanoukville is reachable by road.
By road from Phnom Penh
Several bus companies operate daily services between Phnom Penh and Sihanoukville along National Road 4. Journey time is typically three to four hours depending on traffic and road conditions. Shared taxis and private car hire are also available. Verify current operators and prices locally or through your accommodation.
By ferry to the islands
Ferries to Koh Rong and Koh Rong Sanloem depart from the Sihanoukville ferry terminal. Multiple operators run services; schedules are weather-dependent, particularly during the rainy season (May–October). Confirm schedules and book tickets in advance during busy periods.
Getting Around
Within Sihanoukville, tuk-tuks and motorcycle taxis (motos) are the most common forms of local transport. Ride-hailing apps may operate in the city — verify locally which platforms are active. Many of the beaches and the ferry terminal are not within easy walking distance of one another, so budget time and transport costs accordingly.
For the islands, local boat services connect different beaches on Koh Rong and Koh Rong Sanloem, though schedules are informal and can depend on demand and weather. Renting a bicycle or motorbike is possible on the larger islands; verify road and track conditions before setting out, particularly in the rainy season.
Things to See & Do
Offshore islands
Koh Rong and Koh Rong Sanloem are the primary draws for most visitors. Koh Rong is larger and more developed, with a range of guesthouses and beach bars; Koh Rong Sanloem is generally quieter and better suited to travelers seeking less activity. Both islands offer snorkeling, swimming, and bioluminescent plankton experiences (seasonally variable — verify locally).
Beaches near Sihanoukville
Otres Beach, south of the main town, has historically been the quieter, more low-key option compared to Serendipity and Ochheuteal beaches closer to the center. The character and development level of individual beaches changes; ask at your accommodation for current conditions.
Ream National Park
Located a short distance east of Sihanoukville, Ream National Park covers mangrove forest, coastal forest, and some beach areas. Boat trips through the park's waterways and guided walks are possible. Contact the park directly or verify through a reputable local operator for current access, fees, and guide availability, as the park has seen changes to its boundaries and access points in recent years.
Diving and snorkeling
Several dive operators are based in Sihanoukville and on the islands. Water visibility and conditions are generally best during the dry season. Check operator credentials (PADI or equivalent certification) before booking.
Food & Drink
Sihanoukville has a mix of Cambodian and international dining options, concentrated around the main tourist strips and Otres Beach. Cambodian dishes worth seeking out include fish amok (a coconut-based curry traditionally steamed in banana leaf), lok lak (stir-fried beef), and fresh seafood prepared simply.
Street food stalls and local market eateries offer the most economical and often the most authentic eating experiences. The Phsar Leu market area and smaller neighborhood markets are good starting points. Exercise standard food hygiene caution — stick to stalls with high turnover and freshly cooked food.
Fresh coconuts, sugarcane juice, and locally produced Angkor beer are ubiquitous. Tap water is not safe to drink; bottled or filtered water is the norm. On the islands, food options are more limited and generally more expensive than in town — factor this into your budget.
Practical Information
Emergency contacts
Verify current local emergency numbers on arrival or through your accommodation. Cambodia's general emergency number is 119 (police) and 118 (ambulance), though response times and services vary significantly outside Phnom Penh. The nearest hospital with serious-trauma capability is in Phnom Penh; medical evacuation insurance is strongly advised.
Money
US dollars are accepted in most tourist-facing businesses. Cambodian riel is used for small purchases and change. ATMs are available in the city center; verify fees. Card acceptance outside larger establishments is inconsistent — carry sufficient cash, especially when heading to the islands.
Connectivity
Local SIM cards are affordable and available at the airport and in town. Major Cambodian carriers include Cellcard, Smart, and Metfone — compare coverage and data packages. Wi-Fi is available in most guesthouses and cafes.
Electricity
Cambodia uses 230V/50Hz. Plug types A, C, and G are found; a universal adapter is recommended.
Safety
Sihanoukville's urban core has seen significant change in recent years and travelers should exercise standard urban caution: be aware of your surroundings, secure valuables, and avoid poorly lit areas at night. Petty theft (bag-snatching from motos) has been reported; keep bags on the side away from traffic.
On the islands, water safety is a genuine concern. Rip currents can be strong, particularly during the transition seasons. There are no formal lifeguard services on most beaches — swim with caution and ask locals about current conditions. Bungalow and accommodation fires have occurred on the islands due to basic electrical infrastructure; note fire exits and keep a small torch accessible.
Ferry safety standards vary between operators. Overloading and night crossings in rough weather have caused incidents in Southeast Asian island ferry services generally. Choose reputable, established operators and avoid traveling by ferry in clearly adverse weather conditions.
Local Culture & Etiquette
Sihanoukville is a working Cambodian city as well as a tourist hub, and the cultural norms of Cambodia apply. Dress modestly when visiting temples, markets, or residential areas away from the beach. Remove shoes before entering homes and places of worship.
The legacy of the Khmer Rouge era (1975–1979) is present throughout Cambodian society. Treat all conversations about this period with sensitivity and respect. Many Cambodians have family histories directly affected by that time.
Tipping is not mandatory but appreciated in restaurants and for guides; small gestures of respect go a long way. Bargaining is normal in markets but should be conducted good-naturedly. Aggressive or dismissive bargaining is considered disrespectful.
