Cambodia’s south coast is the quieter counterpart to Thailand’s busy islands — less developed, less expensive, and in many ways more interesting. Kampot is a colonial-era riverside town with one of the most pleasant atmospheres in Southeast Asia. Kep is barely a town at all — a handful of restaurants, a legendary crab market, and a national park — but it is one of my favorite places in the region. The offshore islands, Koh Rong and Koh Rong Sanloem, offer genuine tropical island experiences without the infrastructure (and price) of Koh Samui or Phuket.
You can see all of this in a week, or you can lose three weeks here and feel it went too fast.
The South Coast in Context
Cambodia’s coastline is limited — roughly 440 kilometers along the Gulf of Thailand — and much of it is either undeveloped mangrove or has been claimed by private resort development. What remains accessible is concentrated around three main hubs: Kampot (the base), Sihanoukville (the gateway to the islands), and Kep (the quiet weekend spot).
The south coast routes tend to work north-to-south from Phnom Penh, or they connect to Vietnam via the Prek Chak-Xa Xia border crossing that links Kampot to Ha Tien in Vietnam’s Mekong Delta. It’s an excellent routing option for travelers doing a Southeast Asia loop.
Getting to the South Coast
From Phnom Penh to Kampot: 3 hours by bus ($6-8). Direct buses run multiple times daily via Phnom Penh Sorya and Mekong Express. The road is sealed and comfortable.
From Phnom Penh to Sihanoukville: 4-5 hours ($8-12). Giant Ibis is the most reliable operator on this route.
From Kampot to Kep: 30 minutes by tuk-tuk ($8-10) or shared minivan ($4). The road between the two is beautiful — flat rice paddies with Bokor Mountain looming to the north.
From Sihanoukville to Koh Rong: 45 minutes by speed ferry ($12-15), 2.5 hours by slow boat ($7-8). Ferries depart from Serendipity Pier.
Kampot: 3-4 Days
Kampot is the ideal south coast base and one of the most livable small towns in Southeast Asia. The Kampot River runs through town past French colonial buildings in various states of elegant decay. The streets are quiet enough to cycle, the café scene is genuinely good, and the surrounding area — pepper plantations, cave pagodas, the deserted French hill station of Bokor Mountain — keeps you occupied without effort.
What to do:
- Rent a bicycle or motorbike and explore the countryside: pepper farms at Kep Pepper ($2 entry), Phnom Chhnork cave pagoda ($1), and the river villages south of town.
- Bokor Mountain National Park: A French colonial hill station at 1,079 meters, abandoned in 1972 and partially reclaimed by casino developers in 2013. The original ruins — the old hotel, casino, and church — are eerily beautiful in the morning mist. A tuk-tuk round trip from Kampot costs $20-25.
- Kayaking on the Kampot River: Half-day kayak rental $5-8, or join a sunset kayak tour ($10-15). The mangroves south of town shelter fireflies visible after dark.
- The Old Market area: Kampot’s market and the surrounding streets of colonial buildings are best explored on foot in the early morning, when vendors set up and the temperature is bearable.
- Do absolutely nothing: This is genuinely one of the best options in Kampot. The riverfront restaurants, hammock bars, and afternoon coffee culture are excellent.
Where to stay:
- Budget: Magic Sponge, Chiangmai Bungalows ($6-12 dorm, $15-25 private)
- Mid-range: Rikitikitavi, The Columns ($35-60/night, riverside views)
- Romantic: Les Manguiers ($50-100/night, riverside bungalows in a mango orchard)
Where to eat:
- Rusty Keyhole: Best pizza in south Cambodia, charming garden
- Epic Arts Café: Social enterprise, excellent breakfasts, great cause
- The Greenhouse: Western comfort food, large portions, popular with long-termers
- Any of the riverside fish restaurants: Fresh Kampot river fish grilled with kampot pepper is one of the defining food experiences of Cambodia
Kep: 1-2 Days
Kep is 30 kilometers from Kampot and can be done as a day trip, but one night here is worthwhile to experience the town at dusk and dawn. What passes for Kep’s town center is a handful of streets, a beach (sand is imported and frankly not the draw), and the legendary Crab Market.
The Crab Market: A wooden boardwalk extending over the water lined with restaurants whose seafood comes from boats moored directly alongside. The crabs are fresh, the cooking is Cambodian-simple (stir-fried with kampot pepper and butter, or steamed with ginger), and the setting — watching fishing boats work as you eat — is perfect. Budget $10-20 per person for a serious seafood meal.
Kep National Park: A small hill immediately behind town with marked trails through forest. The loop trail takes 2-3 hours and rewards with views over the coastline and Koh Tonsay island. A longer trail reaches a viewpoint over the old Kep villas — grand French colonial mansions bombed and looted during the Khmer Rouge era, now photogenic ruins overtaken by jungle.
Koh Tonsay (Rabbit Island): A short boat ride from the Kep crab market ($8-10 round trip, boats depart when they have passengers). The island has simple bungalows ($15-20/night), a beach of fine sand, and a handful of restaurants. Snorkeling is basic but the swimming is pleasant. Day trips work well; overnight trips are for travelers who want extreme quiet.
Where to stay:
- Knai Bang Chatt: The luxury option, built on the old colonial seaside promenade, genuinely beautiful ($120-200/night)
- Veranda Natural Resort: Mid-range bungalows in a mango and banana orchard ($40-70/night)
- Budget guesthouses near the Crab Market: $15-25/night
Sihanoukville: 1 Night Maximum (Use as Transit)
Sihanoukville’s downtown has been dramatically changed by Chinese casino development and is no longer a destination in itself. Use it as a transit hub:
- Arrive from Phnom Penh or Kampot in the afternoon
- Stay one night at Otres Beach ($20-35 at Tamu or Mushroom Point)
- Take the morning speed ferry to Koh Rong or Koh Rong Sanloem
Otres Beach (2km south of central Sihanoukville) retains the relaxed vibe that the rest of town has lost. If you’re staying a night, stay here rather than in town.
Koh Rong and Koh Rong Sanloem: 3-5 Days
The two islands are distinct in character and worth understanding before you choose.
Koh Rong is the larger and more developed island. Koh Toch Beach (near the main pier) has a strip of beach bars, restaurants, and guesthouses that gets lively at night. 4K Beach on the west coast is more secluded and requires a short boat transfer or jungle walk from the pier. The bioluminescent plankton in the water at night — blue glowing clouds that surround you when you swim — is one of the genuinely magical travel experiences of Southeast Asia.
Koh Rong Sanloem is smaller, quieter, and divided between a backpacker side (Saracen Bay) and a luxury side (Mad Monkey and Koh Rong Sanloem Resort). Saracen Bay’s long arc of white sand with turquoise water is the most beautiful beach in Cambodia. Snorkeling is better here than on Koh Rong. The overall atmosphere is more relaxed and less party-focused.
Practical island tips:
- Electricity is generator-powered and limited on some parts of the islands — charge electronics during the day
- Everything costs 30-50% more than the mainland
- Bring cash in USD (no ATMs on the islands)
- Ferries can cancel in wet season (June-October) due to rough seas — build flexibility into your schedule
- Water pressure in showers is variable — don’t expect a hotel standard experience even at mid-range accommodation
The South Coast in One Week
A recommended 7-day itinerary:
- Day 1: Arrive Kampot via bus from Phnom Penh, afternoon walk in the old town
- Day 2: Bokor Mountain day trip, evening on the riverside
- Day 3: Bike or motorbike through pepper farms, afternoon in Kep (Crab Market dinner)
- Day 4: Koh Tonsay (Rabbit Island) morning, return Kampot afternoon, minivan to Sihanoukville evening
- Day 5: Morning ferry to Koh Rong Sanloem (Saracen Bay), afternoon swimming
- Day 6: Koh Rong Sanloem day — snorkeling, beach, sunset
- Day 7: Morning ferry back to Sihanoukville, bus to Phnom Penh or Siem Reap
Moving On: The Vietnam Connection
The Prek Chak–Xa Xia border crossing (25km south of Kampot) is the most convenient overland connection to Ha Tien in Vietnam’s Mekong Delta. From Ha Tien you can reach Can Tho in 2-3 hours and Ho Chi Minh City in 4-5 hours. Direct bus services from Kampot to Ha Tien or Ho Chi Minh City run daily ($10-15). Check current crossing hours before you travel — the border typically operates 7am-5pm.
For travelers doing a Cambodia-Vietnam loop, the south coast → Mekong Delta connection is one of the most satisfying regional itineraries in Southeast Asia.