Pristine white sand beach on Koh Rong island, Cambodia, with turquoise water
Experience

Beaches & Islands in Cambodia

Pristine Islands in the Gulf of Thailand

60+ islands across 4 provinces Best: Nov–Apr Top pick: Koh Rong Samloem

Quick Answer

Cambodia's coastline along the Gulf of Thailand is one of Southeast Asia's last undiscovered beach frontiers, spread across four provinces — Preah Sihanouk, Kep, Kampot, and Koh Kong. Koh Rong and Koh Rong Samloem are 45 minutes by speedboat from Sihanoukville. Quieter islands like Koh Ta Kiev and Rabbit Island (Koh Tonsay) near Kep stay close to off-grid, while the Koh Sdach archipelago near the Thai border in Koh Kong sees only a handful of visitors a day. November to April is the best time for beaches — calm seas and guaranteed sunshine.

Top Beaches & Islands Experiences in Cambodia

Editor-curated picks — click any experience to explore further.

  1. 1
    Island

    Koh Rong — Bioluminescent Bay

    Preah Sihanouk

    Cambodia's most famous island — electric blue plankton at night, Long Beach by day
  2. 2
    Island

    Koh Rong Samloem — Saracen Bay

    Preah Sihanouk

    Perfectly calm lagoon — the most beautiful anchorage in the Gulf of Thailand
  3. 3
    Island

    Rabbit Island (Koh Tonsay)

    Kep

    No cars, basic huts, family-run seafood — 20 minutes from Kep by wooden boat
  4. 4
    Beach

    Otres Beach

    Preah Sihanouk

    The mainland's best beach — yoga studios, backpackers, and a relaxed village feel
  5. 5
    Island

    Koh Ta Kiev — Off-Grid

    Preah Sihanouk

    No Wi-Fi, generator-powered bungalows, hammocks over the water — pure escape
  6. 6
    Market

    Kep Crab Market

    Kep

    Pick your live crab, choose your preparation — Kampot pepper or garlic fried
  7. 7
    Nature

    Ream National Park

    Preah Sihanouk

    Mangroves, dolphins, and empty beaches within Cambodia's coastal national park
  8. 8
    Water sports

    Snorkelling — Koh Rong Reef

    Preah Sihanouk

    Coral reefs and tropical fish in remarkably clear water — gear available to rent
  9. 9
    Island

    Koh Sdach Archipelago

    Koh Kong

    A 12-island fishing-village archipelago near the Thai border, barely touched by tourism
  10. 10
    Nature

    Kampot River Firefly Cruise

    Kampot

    Sunset past the old train bridge, then fireflies flickering on the riverbank

Koh Rong Islands

Cambodia's most famous island pair, 25–45 minutes by speedboat from Sihanoukville — from lively beach bars to barely-touched coves a short boat hop further out.

Island

Koh Rong

Preah Sihanouk

7km Long Beach, Koh Touch village, and bioluminescent plankton at night
Island

Koh Rong Samloem

Preah Sihanouk

Saracen Bay's mirror-calm lagoon — the quieter, more beautiful sister island
Island

Koh Ta Kiev

Preah Sihanouk

Off-grid eco-island with no roads, an hour by longtail from Otres Beach
Island

Koh Thmei

Preah Sihanouk

Three pine-shaded beaches inside Ream National Park, almost no visitors

Sihanoukville Mainland Beaches

Away from the casino towers, the mainland still holds a relaxed beach village and a protected stretch of coastal park.

Beach

Otres Beach

Preah Sihanouk

Yoga studios, beach bars, and the main pier for island ferries
Nature

Ream National Park

Preah Sihanouk

Mangrove boat trips, dolphin sightings in season, and empty wild beaches

Kep & Rabbit Island

Cambodia's smallest province trades scale for charm — a famous crab market, a walkable town beach, and an island day trip with no cars at all.

Island

Rabbit Island (Koh Tonsay)

Kep

20 minutes by wooden boat — white sand, seafood shacks, and no traffic
Beach

Kep Beach

Kep

A quiet crescent at the tip of the peninsula, framed by colonial villa ruins
Market

Kep Crab Market

Kep

Live crab straight from floating cages, fried with fresh Kampot pepper

Kampot Riverside

Kampot isn't a beach town, but the Praek Tuek Chhu river delivers one of the coast's best evening rituals.

Nature

Kampot River Sunset & Firefly Cruise

Kampot

Boats drift past the old train bridge at sunset, then fireflies after dark

Koh Kong's Hidden Islands

Near the Thai border, a 12-island archipelago that sees a fraction of the visitors Sihanoukville's islands do — reached by local boat, not scheduled ferry.

Island

Koh Sdach (King Island)

Koh Kong

A working fishing-village island and the gateway to the wider archipelago
Island

Koh Totang

Koh Kong

No roads, no cars — crystal water and white sand at the edge of the map

Beaches & Islands for Every Type of Traveler

Beach Seeker

Koh Rong Samloem's Saracen Bay is the gold standard — calm, clear, and genuinely undeveloped. Come before the rest of the world discovers it.

See itinerary

Couple Escape

Koh Rong Samloem for privacy and bioluminescence, then Kep for fresh crab and a peaceful riverside town. A perfect 5-day coastal loop.

See itinerary

Digital Detox

Koh Ta Kiev has no Wi-Fi, no phone signal, and generator-powered bungalows. Exactly as hard to leave as it sounds.

See itinerary

Budget Traveller

Otres Beach hostels start at $8/night. Speedboats run every two hours to Koh Rong. Budget $25–40/day all-in — still one of SE Asia's best-value beach destinations.

See itinerary

Where in Cambodia?

Preah Sihanouk, Cambodia

Preah Sihanouk

Tropical Islands & Gulf of Thailand Beaches
Kampot, Cambodia

Kampot

Riverside Charm, Famous Pepper & Crab
Koh Kong, Cambodia

Koh Kong

Cardamom Rainforest & Wild Rivers
Kep, Cambodia

Kep

Crab, Beaches & Pepper Plantations

Browse all provinces

Best Time for Beaches & Islands in Cambodia

Dry Season — Nov to Apr

Clear skies, cool temperatures, and easy access across Cambodia. Ideal for temples, trekking, and beach visits. Peak season (Dec–Jan) brings the most visitors and highest prices — book accommodation in advance.

Recommended

Green Season — May to Oct

Lush green landscapes, fewer crowds, lower prices, and full-flow waterfalls. Rain falls mostly in afternoon downpours — mornings are often clear. Bioluminescence peaks on the coast. Temples are quieter and photogenic with moody skies.

Budget-friendly

Full month-by-month guide

How to Experience Beaches & Islands in Cambodia

Getting There

Most visitors fly into Phnom Penh (PNH) or Siem Reap (REP). Budget carriers including AirAsia and Bangkok Airways connect both cities to regional hubs. Overland from Thailand or Vietnam is straightforward and popular.

What to Bring

Lightweight, breathable clothing. Temples require covered shoulders and knees — a scarf doubles as both cover-up and temple-appropriate wear. Reef-safe sunscreen for coastal areas. A good insect repellent for jungle and evening activities.

Guided vs Self-Guided

Most Cambodian experiences can be done independently. Guided tours add significant value at historical sites (context, access, storytelling) and for wildlife experiences (safety, specialist knowledge). Licensed guides cost $30–50/day and are available through hotels.

Budget Guide

Cambodia is excellent value. Budget travellers: $30–50/day (dorm, street food, local transport). Mid-range: $60–100/day (guesthouse, restaurant meals, tuk-tuk). The Angkor Pass is $37/day or $62 for 3 days — the main fixed cost for temple visitors.

Full budget guide for Cambodia

Suggested Itineraries

10–12 Days in Cambodia — Temples & Beach
10–12 days

10–12 Days in Cambodia — Temples & Beach

Angkor Wat at sunrise

 14 Days in Cambodia — The Full Country
14+ days

14 Days in Cambodia — The Full Country

Angkor Wat at sunrise

All Cambodia itineraries

Frequently Asked Questions

What is bioluminescence and when can I see it in Cambodia?
Bioluminescence is a natural phenomenon where marine plankton emit blue light when disturbed. It is most spectacular at Koh Rong and Koh Rong Samloem from July to October when blooms peak, though it is often visible year-round. Wade into the water after dark and watch your footsteps light up electric blue — one of travel's genuinely magical experiences.
How do I get to Koh Rong from Sihanoukville?
Multiple ferry companies run speedboats and slow boats from Sihanoukville pier. Journey time is 30–45 minutes by speedboat or 1.5 hours by slow boat. Ferries run approximately every 2 hours from 8am to 5pm. Book at the pier or through your guesthouse. Cost: $8–15 USD each way.
What is the difference between Koh Rong and Koh Rong Samloem?
Koh Rong is the larger island with more development, a village atmosphere, and the famous 7km Long Beach. Koh Rong Samloem is quieter with more untouched nature — the protected Saracen Bay lagoon is its highlight. Couples and those seeking peace generally prefer Samloem; those wanting more activity and social scene prefer Koh Rong.
Is the sea safe for swimming in Cambodia?
During the dry season (November to April), seas are calm and perfect for swimming. From May to October, conditions are unpredictable with rougher seas and occasional storms. Always check local conditions with boat operators. Saracen Bay on Koh Rong Samloem is protected and swimmable year-round regardless of weather.
What is the best Cambodia beach for snorkelling?
Koh Rong and the surrounding islands offer the best snorkelling — relatively clear water with coral reefs and tropical fish. Koh Rong Samloem's M'Pai Bay and the reefs off Koh Ta Kiev are particularly good. Bring reef-safe sunscreen — many local operators now require it.
What are Cambodia's best lesser-known islands?
Beyond Koh Rong and Koh Rong Samloem, Koh Ta Kiev and Koh Thmei near Sihanoukville offer off-grid beaches with no roads and minimal development. Near the Thai border in Koh Kong, the Koh Sdach archipelago — including the remote Koh Totang — sees only a handful of visitors a day. All are reached by local or chartered boat rather than scheduled ferry, which is exactly what keeps them quiet.

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