Rainy season
Rain is heaviest in September and October. Depressions from the South China Sea may affect the Gulf of Thailand, and May can bring stronger waves and winds.

Seasons, beaches, viewpoints, island activities, tours, local transport fares and national park fees.
Koh Samet has a tropical monsoon climate and can be visited through most of the year. The most recommended period is November to April, when the sea is generally clearer, waves are calmer and outdoor conditions are favorable.
Rain is heaviest in September and October. Depressions from the South China Sea may affect the Gulf of Thailand, and May can bring stronger waves and winds.
Northeast monsoon winds bring cooler conditions to eastern Thailand, although temperatures remain mild because of the maritime influence.
Skies are often clear and conditions suit water activities. Southerly and southeasterly winds make this a popular beach-holiday period.
Koh Samet has more than 15 beaches and bays, each with a different atmosphere—from lively shores with restaurants and activities to quiet coves suited to nature and relaxation.
Fine white sand, a broad beachfront and the island’s liveliest atmosphere, with resorts, restaurants, water sports, pubs and bars. Best for travelers who enjoy activity and nightlife.
A more private beach between Sai Kaew and Ao Phai, within easy walking reach of both. White sand, a broad shore and shade from trees make it good for swimming and sunbathing.
A compact bay next to Sai Kaew. The water is very clear and the setting is quieter, suitable for relaxing, reading and budget-conscious stays.
A small beach about 200 metres from Ao Phai. It is relatively quiet, with only a few small resorts; the shore is narrow but enjoyable for swimming.
A crescent-shaped bay with roughly 500 metres of white sand and a gentle slope, ideal for water activities, with many accommodation, dining and bar options.
Fine white sand and a famous wooden pier extending into the sea. Romantic and photogenic, about a 100-metre walk from Ao Wong Duen.
A tiny, simple beach with limited facilities, shell fragments and rocks. Swim carefully. It suits travelers seeking a very quiet atmosphere.
A peaceful, natural beach with fewer crowds, clean shore and clear water. Sandy and rocky areas make it suitable for fishing, snorkeling and enjoying the view.
Next to Ao Sang Thian, quiet and private, with fine sand and a photo-friendly pier. Accommodation is affordable, though facilities may be basic.
Farther from the northern end of the island, with fewer visitors and a natural feel. One resort gives it a private-beach atmosphere; good for groups and kayaking.
Spans the eastern and western sides, offering attractive beaches, sunset views and shallow-water snorkeling. Access depends on your accommodation area by boat or songthaew.
At the island’s southern tip, with many rocks. Better for kayaking, snorkeling, coral viewing and seasonal fishing than long beach walks; a fine sunset viewpoint is nearby.
One of the island’s two west-coast beaches. Calm, private and home to a small number of upscale resorts; good for kayaking, sailing and sunsets.
Close to Na Dan Pier and convenient to reach, yet fairly peaceful. Suitable for swimming and relaxed beach time, with several accommodation choices.
A quiet white-sand beach by the national park office, with camping space and well-preserved nature. There are no restaurants directly on the beach.
A very small, isolated beach north of Ao Phrao, inaccessible by road and without resorts or shops. Usually reached on a tour stop or by kayak.
The island’s key viewpoints are best visited in the late afternoon when the sun is softer. A motorbike is convenient, but take care on curves and steep roads.
Between Ao Lung Dam and Ao Wai, about 2.6 km from the central resort area. Visit in the evening for colorful sky and sea views.
There are viewpoints on both the west and east sides, about a 10-minute walk apart and roughly 4.8 km from the central area. Enjoy both sunrise and sunset perspectives.
Choose activities according to sea conditions and your interests, from snorkeling and paddling to live music and evening fire shows.
A Koh Samet highlight, with clear water and several broad shallow-reef areas around the island.
Paddle along the coast and enjoy the scenery while getting some gentle exercise.
A long board and paddle activity best enjoyed when the water is relatively calm.
Some periods bring waves strong enough for board surfing in suitable areas.
Head out at sea, fish for squid and enjoy fresh squid on board when available.
Many restaurants and resorts feature live music and fire-spinning performances.
Available from operators at selected active beaches; follow local safety guidance.
Rent a motorbike to connect beaches and viewpoints, and ride carefully on curves and hills.
Popular sample itineraries for visiting nearby islands, snorkeling around reefs and joining an evening squid-fishing trip.
Meet at Na Dan Pier and board by noon. The trip combines snorkeling, beach time, sunbathing and viewpoints—ideal for seeing major highlights in one day.
Similar to the 6-island program but without Koh Talu, one of the main highlights. Suited to travelers with only half a day.
Join a large wooden boat in the evening and learn basic squid-fishing techniques while experiencing the sea at night.
Reference fares for island songthaews, shown as per-person and private-charter prices. Confirm the current fare with the driver before departure.
| Destination | Per person | Private charter |
|---|---|---|
| Sai Kaew Beach | 20 ฿ | 150 ฿ |
| Ao Noi Na | 30 ฿ | 300 ฿ |
| Pier | 30 ฿ | 200 ฿ |
| Ao Thapthim | 20 ฿ | 150 ฿ |
| Ao Phrao | 30 ฿ | 200 ฿ |
| Ao Wong Duen | 20 ฿ | 200 ฿ |
| Ao Sang Thian | 30 ฿ | 250 ฿ |
| Ao Wai | 40 ฿ | 350 ฿ |
| Ao Kiu | 40 ฿ | 400 ฿ |
| Ao Pakarang | 50 ฿ | 450 ฿ |
| Round the island | 1,000 ฿ | 2,000 ฿ |
These are reference prices from the 2025 revised guide and may change. Agree on the fare with the driver before departure.
Entrance fees for Khao Laem Ya–Mu Ko Samet National Park for Thai and international visitors.