Koh Seh: Cambodia’s Quiet Island Escape Near Kampot

Why Koh Seh Stands Out

Koh Seh is a small, largely undeveloped island in the Gulf of Thailand that feels worlds away from Cambodia’s busier coastal spots. Its gently curving beaches, fringing coral reefs, and low hills covered in scrub forest attract travelers who want to swim, snorkel, or simply sit under the shade without crowds or vendors.

Getting There from Kampot

Most visitors reach Koh Seh by boat from Kampot’s riverside or from nearby Kep. Local operators run half-day and full-day trips, often combining the island with a stop at another nearby islet. The crossing takes roughly 45 minutes to an hour depending on sea conditions and the type of vessel. Private long-tail or speedboat charters give more flexibility for early-morning or sunset departures. Bring cash for the boat fee and any lunch arranged onboard.

Best Time to Visit

The dry season from November through April offers the calmest seas and clearest water for snorkeling. From May to October, afternoon showers are common and wave action can reduce visibility, though the island remains accessible and far less crowded. Early morning arrivals avoid the strongest sun and give the best chance of spotting reef fish before boats stir the water.

What to See and Do

Snorkeling along the northern and eastern shores reveals soft corals and schools of small reef fish; bring your own mask and fins or rent them from the boat crew. The shallow bays are also suitable for leisurely swims and stand-up paddleboarding when the sea is flat. A short trail leads inland to a modest viewpoint where the entire island and surrounding waters are visible on clear days. Birdwatchers often spot kingfishers and egrets along the shoreline at dawn and dusk.

Practical On-Island Advice

• There are no permanent restaurants or shops, so carry water, snacks, and sun protection.
• Stay on marked paths to avoid disturbing nesting birds and fragile vegetation.
• Respect local fishing gear left on the beach; do not move or damage it.

Nearby Places Worth Combining

Kep National Park’s hiking trails and the famous crab market lie a short boat ride away. Many visitors pair Koh Seh with Rabbit Island (Koh Tonsay) for a two-island day trip, or continue to the pepper plantations and salt fields around Kampot town on the return journey.