Best Islands in Cambodia: A Comparison Guide for 2026 Travelers

Gulf of Thailand^^^⁼xxxxxxxxxxxxxxxxxxèht********************************* has more than 60 islands scattered along its southern coast — but only a handful are set up for travelers. Each one has its own character, its own rhythm, and its own kind of guest. Some are loud and social. Some are quiet and off-grid. Some sit somewhere in between.

Here's an honest, lived-in comparison of the five islands worth knowing about — written for travelers trying to figure out which one is actually right for them.

The Quick Comparison

Koh Rong — busy, social, party-friendly, easy to reach.

Koh Rong Sanloem — quieter sister island, beach-bungalow chill.

Koh Ta Kiev — off-grid, sanctuary energy, where you go to disconnect.

Koh Thmei — birdwatchers and nature people, almost no infrastructure.

Koh Totang — single eco-lodge, ultra-remote, all-inclusive.

Below, the full picture on each — vibe, access, what to expect, and who it's actually for.

Koh Rong

The biggest and best-known of Cambodia's islands. Long sandy beaches, lots of guesthouses and beach bars, daily ferries from Sihanoukville (45-60 minutes). The main strip on Koh Touch is busy, music-heavy, and built for backpackers. The other beaches — Long Set, Sok San, Coconut Beach — are progressively quieter and have nicer resorts.

Best for: first-time visitors, social travelers, anyone who wants variety. Less ideal if you came to unplug.

Koh Rong Sanloem

Koh Rong's mellower neighbor. Same fast ferry connection (~1 hour), but the vibe is different — Saracen Bay has a string of beach-bungalow resorts and that's about it. Sunset Beach on the west side is even quieter. Snorkeling and bioluminescent plankton are excellent. Wi-Fi is patchy by design.

Best for: couples, honeymooners, travelers who want beach time without the noise.

Koh Ta Kiev (where Kactus is)

A small, mostly untouched island about an hour by longtail boat from Otres Beach. There are only a few accommodations on the entire island, and the whole place runs off-grid — solar power, well water, no traffic, no shops. The beaches are long and empty. You walk everywhere.

This is the island for travelers who specifically want to disconnect: digital detox, yoga and wellness retreats, slow mornings, real darkness at night. At Kactus we've leaned into that — daily yoga, sauna and ice bath, home-cooked Khmer-Western fusion, treehouse dorms and beach bungalows.

Best for: wellness travelers, solo introspection, couples wanting nature, anyone serious about unplugging.

Koh Thmei

Inside Ream National Park, Koh Thmei is largely uninhabited and protected. The only commercial accommodation is Koh Thmei Resort, with simple wooden bungalows. The island is known for birdwatching (over 150 species), coral reefs, and complete quiet.

Best for: nature obsessives, photographers, birdwatchers, travelers who want "empty island" without any frills.

Koh Totang

The most remote on this list — Koh Totang sits in the Koh Sdach archipelago, several hours from Sihanoukville. The single property, Nomads Land, has five solar-powered bungalows and offers an all-inclusive package. You don't move much; you settle in.

Best for: travelers ready for a serious commitment to remoteness, families or small groups who want the whole island feel.

Honorable Mentions

Koh Russey (Bamboo Island) hosts the luxury Alila Villas — beautiful but a different price tier. Krabey Island is home to Six Senses Krabey, also luxury. Both are reachable from Sihanoukville in under an hour.

Which Island Is Right for You?

If it's your first time in Cambodia and you want a bit of everything → Koh Rong (a quieter beach, not Koh Touch).

If you want a beach holiday with your partner and easy comforts → Koh Rong Sanloem.

If you specifically need to slow down, unplug, and reset → Koh Ta Kiev. (We may be biased, but the math is honest — it's the island built for this.)

If you're chasing birds, snorkeling, and silence → Koh Thmei.

If you want to disappear for a week → Koh Totang.

If budget isn't a factor → Koh Russey or Krabey via Six Senses or Alila.

A Note on Sustainable Travel

Cambodia's islands are fragile. Coral bleaching, plastic accumulation, and over-development on Koh Rong have all happened fast. When you choose where to stay, look for properties that run on solar, that filter and reuse water, that work with local fishermen and farmers, and that limit how much they build. The smaller, off-grid operators tend to be the ones doing this work — and your booking is what keeps them viable.

Plan Your Stay at Kactus

If Koh Ta Kiev sounds like your kind of island, we'd love to host you. We have bungalows from beachfront treehouses to budget-friendly dorms, all-inclusive wellness packages with yoga and sauna, and scheduled boat transfers from Otres Beach included in your nightly stay.

Browse our bungalows, check our wellness packages, or message us on WhatsApp at +855 962 683 069 with any questions. We'll help you figure out if Kactus is the right fit — and if it's not, we'll honestly tell you which of the islands above probably is.