Koh Samet
เกาะเสม็ด · Rayong Province
Population
2K
Budget / Month
$500
Internet
15 Mbps
Best Season
November to May (virtually rain-free; drier than most Thai islands)
About Koh Samet
Koh Samet is the closest quality beach island to Bangkok, reachable in about 3.5 hours door-to-door. This small island in Rayong province punches above its weight with powdery white sand, clear turquoise water, and a lively party scene drawing Bangkok weekenders by the thousands. A rain shadow makes it one of Thailand's driest spots, meaning beach days are almost guaranteed even during mainland monsoon season.
The west coast beaches (Sai Kaew, Ao Phai, Ao Vong Duen) are the main draws, each with different character from party-central to family-friendly. Being part of a national park, development is officially controlled though enforcement is inconsistent.
Koh Samet is not remote wilderness — it is a fun, accessible beach party island with genuine natural beauty. Weekdays are peaceful while weekends transform the island into Bangkok's outdoor nightclub.
Historical Note
Koh Samet is part of Khao Laem Ya - Mu Ko Samet National Park. The island developed for tourism alongside Pattaya and eastern seaboard growth, becoming Bangkok's preferred weekend beach escape due to its proximity and reliable dry weather.
Best time to visit: November to May (virtually rain-free; drier than most Thai islands)
At a Glance
Thai Name
เกาะเสม็ด
Province
Rayong
Region
Eastern
Population
1,500
Area
6.8 km²
Elevation
160 m
Postal Code
21160
Local Language
Central Thai
Cost of Living
budget
/month18,000 THB
~$500 USD
comfortable
/month39,500 THB
~$1,097 USD
luxury
/month85,000 THB
~$2,361 USD
food
| Item | Low (THB) | High (THB) |
|---|---|---|
| Street food meal | 70 | 120 |
| Beach restaurant meal | 120 | 250 |
| Seafood restaurant meal | 200 | 500 |
| Coffee (cafe) | 40 | 120 |
| Beer (bottle) | 80 | 120 |
| Water bottle (1.5L) | 20 | 30 |
| Cocktail / bucket | 150 | 350 |
accommodation
| Item | Low (THB) | High (THB) |
|---|---|---|
| Fan bungalow | 400 | 1,000 |
| Air-con room | 1,000 | 3,000 |
| Beachfront resort | 3,000 | 6,000 |
transport
| Item | Low (THB) | High (THB) |
|---|---|---|
| Speedboat from Ban Phe | 200 | 200 |
| Motorbike rental (day) | 300 | 500 |
| Songthaew (island taxi) | 30 | 100 |
entertainment
| Item | Low (THB) | High (THB) |
|---|---|---|
| Jet ski (30 min) | 800 | 1,500 |
| National park entry fee | 200 | 200 |
Internet & Connectivity
Speed Test Averages
vs Bangkok Average (200 Mbps)
8% of Bangkok speed
Providers
Coworking Spaces
0
Weather & Climate
November to May is best and virtually rain-free. The rain shadow means even June-October has less rain than other islands. Weekdays are strongly recommended — weekends are packed and expensive.
| Month | High °C | Low °C | Rain (mm) | Humidity |
|---|---|---|---|---|
| Jan | 31 | 23 | 10 | 65% |
| Feb | 32 | 24 | 10 | 64% |
| Mar | 33 | 25 | 30 | 66% |
| Apr | 34 | 26 | 50 | 70% |
| May | 33 | 26 | 100 | 74% |
| Jun | 32 | 26 | 80 | 72% |
| Jul | 32 | 25 | 70 | 72% |
| Aug | 32 | 25 | 90 | 74% |
| Sep | 31 | 25 | 120 | 76% |
| Oct | 31 | 24 | 140 | 76% |
| Nov | 31 | 24 | 40 | 68% |
| Dec | 30 | 23 | 10 | 65% |
Things to Do
Sai Kaew Beach (Diamond Sand)
หาดทรายแก้ว
The main beach and party zone with wide white sand, clear water, nightly fire shows, and beach bars. Koh Samet's social center.
Fire Shows
Nightly performances on Sai Kaew and Ao Phai beaches with fire spinning, limbo, and audience participation. Free to watch.
Ao Vong Duen
อ่าววงเดือน
Family-friendly crescent bay with calm water, good snorkeling, and a more relaxed atmosphere than the party beaches.
Ao Prao Sunset
อ่าวพร้าว
The only west-facing beach on the island. Home to the most upscale resorts and perfect for sunset viewing.
Snorkeling
Good coral around the southern tip and offshore rocks. Join a day trip or rent gear at Ao Vong Duen for the best visibility.
Kayaking and SUP
Paddle between beaches along the coast. Particularly beautiful at sunset when limestone headlands glow golden.
Food & Dining
-
Grilled Seafood Platter
Beach restaurants set up charcoal grills each evening with prawns, squid, whole fish, and shellfish priced by weight.
200-600
Beachfront restaurants on all main beaches
ปลาเผา
Pla Pao
Whole fish packed in salt and grilled over coals. Crack open the salt crust to reveal perfectly moist, flavorful fish inside.
150-350
Seafood restaurants on Sai Kaew and Ao Phai
ต้มยำกุ้ง
Tom Yum Goong
Classic hot and sour prawn soup made with fresh Gulf of Thailand prawns. Every beach restaurant has its version.
120-250
Beach restaurants island-wide
ผัดกะเพราหมู
Pad Krapao Moo
Stir-fried pork with holy basil, the quintessential Thai one-dish meal. Quick, cheap, and satisfying.
70-120
Local food stalls near the pier
Food Streets
- Sai Kaew Beach strip
Accommodation
Hostel Dorm
300 - 600
THB / night
Budget Hotel
400 - 1,000
THB / night
Mid-Range
1,000 - 3,000
THB / night
Luxury
6,000 - 15,000
THB / night
Studio /mo
10,000 - 20,000
THB / night
1BR /mo
15,000 - 30,000
THB / night
Best Areas for Tourists
Best Areas for Long Stay
Booking Tip
Weekend prices increase 30-50%. Thai holidays can double prices. Book ahead for weekends; weekdays you can often walk in.
Getting There from Bangkok
Minivan/bus to Ban Phe + speedboat
3-3.5 hours + 15 min
400-500 THB
Minivan/bus to Ban Phe + ferry
3-3.5 hours + 45 min
300-400 THB
Getting Around
Songthaew
WidespreadConverted pickup trucks from the pier to various beaches.
30-100
Boat taxi
Tourist areas onlyBetween beaches by sea. Useful for southern beaches.
50-200
Motorbike rental
LimitedSmall island but roads are steep and rough in places.
300-500/day
Neighborhoods
Sai Kaew Beach (Had Sai Kaew)
Lively beach party atmosphereThe main event. Longest and widest beach with all the nightlife, fire shows, and most accommodation. Party heartland of the island.
Best for: Party-goers and social travelers
Ao Vong Duen
Relaxed family beachCrescent-shaped family bay further south. Calmer water, good swimming, Thai tourist-focused. Quieter at night with several mid-range resorts.
Best for: Families and relaxation seekers
Festivals & Events
Full Moon Parties
Beach parties on Ao Phai and Sai Kaew timed to the full moon. Smaller than Koh Phangan but fun with fire shows and music.
New Year's Eve
Major party night with beach countdown, fireworks, and celebrations. Book accommodation weeks in advance.
Practical Info
Hospital
Basic clinic on island; serious cases by boat to Ban Phe then Rayong hospital
Best SIM Provider
AIS
ATM Availability
Limited
Language Tip
Basic tourist English on the main beaches. Thai helpful with local vendors.
Drinking Water
Do not drink tap water. Bottled water more expensive than mainland.
Tipping Culture
Not expected but appreciated
7-Eleven Density
Sparse
Emergency Numbers
Tourist police 1155, Emergency 191
Day Trips
Island Hopping by Speedboat
Hire a longtail or speedboat to visit smaller islands and snorkeling spots around Koh Samet.
Ban Phe Seafood Market
Take the ferry back to Ban Phe for a morning at the fresh seafood market — cheaper and more varied than island restaurants.
Nearby Cities
Frequently Asked Questions
Is Koh Samet a party island?
Partially. Sai Kaew and Ao Phai have active nightlife with fire shows. Southern beaches are quiet. Even party areas are calmer on weekdays.
How long from Bangkok?
About 3.5 hours total: 3 hours by car/minivan to Ban Phe, then 15-45 minutes by boat.
Weekday or weekend?
Weekdays strongly recommended. Lower prices, empty beaches, and a much more relaxed atmosphere.
Do I pay a national park fee?
Yes, 200 THB for foreigners. Collected at the pier or beach access points. Keep your receipt for re-entry.
Is it expensive?
Compared to mainland, yes (30-60% markup). Compared to Phuket or Koh Samui, it is moderate. Everything costs more as it must be ferried in.
Which beach should I choose?
Sai Kaew for parties. Ao Phai for mellower party vibe. Ao Vong Duen for families. Ao Prao for luxury sunsets. Ao Wai for escape.