アメリカの旅行者向け：カンボジアのビーチを初旅行に追加すべきか？コ・ロンを超えて

Why the beaches are an 'add-on,' not the main event in 2026

Most Americans picture Cambodia as Angkor Wat at sunrise — and on a first trip, it should be. The temples and Phnom Penh are the headline, and they earn it. But Cambodia also has a 275-mile coastline and a cluster of genuinely beautiful tropical islands an hour or two off the south coast, and the question every first-time US traveler eventually asks is whether to tack them onto the itinerary or save them for a second trip.

The honest answer: the islands are worth it, but only if your trip has the days to absorb them. Cambodia's beaches sit at the bottom of the country, a long way south of Siem Reap. Getting there means a domestic flight or a five-hour bus from Phnom Penh, then a ferry. That is most of a day gone in each direction. On a tight 5-day temple-and-capital run, the islands will leave you exhausted and shortchange Angkor. On 8 days or more, they are the perfect slow ending.

This guide walks through which islands are actually worth your nights, why you should treat Sihanoukville as a transit point rather than a stop, how the coast fits into a wider route, and how the visa works across the whole trip. When you are ready, you can apply for your Cambodia eVisa in a few minutes — the same single visa covers the temples and the sea. If you are still mapping the days, our 10-day Cambodia itinerary for Americans shows exactly where the coast slots in.

Which Cambodian islands are actually worth your nights

There are dozens of islands in the Gulf of Thailand off Cambodia's coast, but for a first trip the choice realistically comes down to three, all reached by ferry from Sihanoukville. Each has a clear personality, and picking the wrong one for your travel style is the most common island regret US travelers report.

Koh Rong Sanloem — the quiet one

If you want postcard white sand, glassy turquoise water, and quiet evenings, this is the island. Saracen Bay is the main strip — a long crescent of pale sand with low-key bungalows and beach restaurants, no roads, no cars, and barely any nightlife. Most first-time American couples and families who add an island choose Koh Rong Sanloem and are happy they did. Two to three nights is the sweet spot: enough to slow down, not so long you run out of things to do.

Koh Rong — the livelier sibling

Bigger, busier, and more backpacker-flavored. Koh Touch village on Koh Rong has bars, hostels, and a party reputation, while the far beaches (Long Set / 4K Beach, Sok San) are spectacular and much calmer. If you are in your 20s or want some evening energy, Koh Rong fits. If you are after pure quiet, go to its sibling instead. Many travelers split the difference by staying on a remote Koh Rong beach away from Koh Touch.

Koh Ta Kiev — the rustic, off-grid option

本土により近く、よりシンプル—エコキャンプ、ハンモック、限られた電気、そしてほとんどWi-Fiがない生活を想像してください。これは適切な旅行者にとっては素晴らしい非接続体験ですが、快適さを期待する任何人にとっては悔しいミスになります。サバイバルが旅行の目的な場合にのみコ・タ・キエウを追加し、フラッシュライトと現金をパックしてください。カード払いは稀なので。