Cambodia

This serene island is one of the most popular tourist attractions in Kep and has long been regarded as one of Cambodia’s hidden gems. Ideal for escaping the bustle of large cities, Koh Tonsay offers a peaceful, slow-paced lifestyle. A small Cambodian island untouched by modernity, it invites travelers to unwind and enjoy a relaxing break. Whether you're drawn to the beach, the sea, the natural scenery, or the local culture, you'll find plenty of options to make the most of your stay.

Discovering Koh Tonsay

Located about 4.5 kilometers off the coast of Kep, near the Cambodian-Vietnamese border, Koh Tonsay lies in the Gulf of Thailand. Covering just 2 square kilometers, the island boasts a long beach lined with coconut palms and a dense jungle inland.

During your visit to Koh Tonsay, it is highly recommended to stay overnight in one of the island's simple bungalows. This allows you to fully enjoy all the island has to offer. Around seven basic cabins are available, each equipped with essential amenities such as shared toilets and outdoor showers. Prices range from $5 to $10 depending on comfort level. For a more comfortable stay with a private shower, opt for an $8 bungalow—most of which come with a hammock on the veranda.

Things to do

Koh Tonsay is best known for its beaches. It offers about half a dozen, with the main beach stretching over one kilometer. A few meters wide, it features golden sand, shaded lounge chairs under coconut trees, and numerous hammocks beneath wooden huts. A stroll along the beach remains one of the island’s most enjoyable activities.

The gently sloping shore creates shallow, warm waters—perfect for swimming or paddling, especially for children and less confident swimmers.

Relaxing in a hammock facing the sea is a must on Koh Tonsay. Whether you’re reading a book, listening to music, or simply watching the waves, swaying in the breeze is part of the island’s charm.

For those interested in water activities, fishing is also an option—either from the shore or by following local fishing boats. Although equipment may be basic, you can usually borrow gear from the bungalow hosts. The rocky areas near the beaches often offer good chances of catching something.

The island is also famous for its fresh seafood. Caught locally and prepared on the spot, dishes typically include fish, shrimp, crab, and squid. The friendly locals and restaurant owners are happy to prepare local specialties for you, such as Kep’s famous crab served with Kampot pepper.

Home to a dense tropical forest, Koh Tonsay is also ideal for hiking. The island is small enough to walk around in just 2 to 3 hours. Along the trail, you’ll pass remnants of an old Khmer Rouge bunker. With calm, clear water, the island is also a great spot for snorkeling. As with fishing, snorkeling gear can be borrowed from the bungalow operators. You can take a boat or ask locals to guide you to the best snorkeling spots, such as the rocky outcrops at either end of the main beach—perfect for observing marine life.

How to get there

To reach Koh Tonsay, you’ll need to take a boat—the only means of transportation to the island. Boats carry both passengers and supplies from the mainland. The journey takes approximately 20 minutes.