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Ream National Park
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national-park
Ream National Park, officially known as Preah Sihanouk Ream National Park, is a coastal protected area located in southwestern Cambodia near Sihanoukville. Established in 1993, the park covers about 210 square kilometers, encompassing a diverse range of habitats from evergreen forests and mangroves to sandy beaches and coral reefs. The area is a sanctuary for numerous species, including rhesus macaques, white-bellied sea eagles, and occasionally, dolphins in the offshore waters. Geographically, the park also includes the islands of Koh Thmei and Koh Seh, which are celebrated for their rich marine biodiversity. Historically, Ream was one of the first national parks in Cambodia designated to safeguard delicate coastal ecosystems from industrial encroachment. However, in recent years, the park has faced significant environmental pressure due to large-scale infrastructure projects and land concessions. Sustaining the mangrove forests is particularly crucial as they serve as natural storm buffers and essential nurseries for the region's commercial fish populations.
- Location: Cambodia
- Top sights: Coral (snorkel) · Fishing Village · Monkey Maya
- Nearby: Otres Beach (12 km)
Best time to visit & climate
The most pleasant time to visit is Jan, Feb, Dec.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 26 | 27 | 28 | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 27 | 26 |
| Rain mm | 27 | 24 | 72 | 134 | 248 | 380 | 444 | 373 | 426 | 253 | 125 | 48 |
📋 Practical info
Getting there
The national park is most easily accessible from Sihanoukville, often reached by a short taxi ride or organized boat tours departing from the coastal city.
Best season
The dry season, running from November to April, provides the best weather conditions for exploring the sandy beaches, mangroves, and lively coral reefs.
Terrain & paths
The landscape features a mix of flat sandy beaches, muddy mangrove swamps, and coastal trails that are generally easy to navigate for most casual visitors.
What to bring
Lightweight and breathable tropical clothing, strong sun protection, insect repellent, and sturdy water shoes are essential for comfortable coastal exploration.
Parking
Parking is typically available near the park headquarters or main entrance gates, though many travelers prefer arranging drop-offs from nearby Sihanoukville.
Safety
Stay aware of local tides when walking on the beaches, use mosquito repellent to prevent tropical diseases, and always follow marked trails in the mangroves.
Time needed
A comprehensive visit usually takes at least half a day to a full day, depending on whether you include boat trips, guided walks, or beach relaxation.
Geography
Facts
- The park was established in 1993 by royal decree.
- Mangrove forests line the banks of the Prek Tuek Sap River.
- Over 150 different bird species have been recorded in the park.
- The islands of Koh Thmei and Koh Seh are part of the protected zone.
- The park contains both terrestrial rainforest and marine reefs.
- Irrawaddy dolphins are occasionally sighted in the coastal waters.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
Vehicle
Only stops with (optional):
© OpenStreetMap contributors · OpenRouteService
Sights in the town Ream National Park (6)
Sights nearby
Frequently asked questions
What is special about Ream National Park?
It combines mangrove forests, freshwater marshes, and beautiful coastal stretches.
Can you take boat tours through the mangroves?
Yes, guided boat tours on the Prek Tuek Sap river are very popular.
Are there beaches in the park?
There are quiet, undeveloped beaches like Koh Thmei, well-suited for relaxation.
How far is the park from Sihanoukville?
The park entrance is about 18 kilometers east of Sihanoukville, near the airport.
Can you go birdwatching in the park?
Yes, over 150 bird species, including eagles and herons, are native here.
Ream National Park: where is it located?
Ream National Park is located in Cambodia.
Ream National Park: what is there to see?
Highlights include Coral (snorkel), Fishing Village, Monkey Maya.
Ream National Park: when is the best time to visit?
The most pleasant time to visit is Jan, Feb, Dec.
Ream National Park: why is it worth visiting?
Ream National Park, officially known as Preah Sihanouk Ream National Park, is a coastal protected area located in southwestern Cambodia near Sihanoukville.
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A formerly quiet stretch of sandy beach south of Sihanoukville on the Gulf of Thailand.
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Koh Thmei
An unspoiled island located within Ream National Park, known for its wildlife and mangrove forests.
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