Koh Samui has beaches on every side of the island, and they are not all created equal. The east coast has the longest, whitest sand. The north coast is calmer and quieter. The west coast faces the wrong way for morning swimming but delivers the sunsets. A few spots between the main areas are worth the short detour. Here is the full picture.
The short version
- Chaweng — best overall: long white sand, good swimming (November-April), busiest
- Lamai — second-best east coast beach, less crowded, southern end rocky with the famous Hin Ta/Hin Yai rocks
- Silver Beach (Crystal Cove) — small, clear water, best snorkelling near shore, between Chaweng and Lamai
- Choeng Mon — calm, clear coves, suited to families; closes off from the Gulf swell
- Bophut — shaded, low-key, good for a quiet morning swim, not spectacular
- Maenam — long, quiet, underdeveloped; better for a walk than a swim
- Lipa Noi — west coast; calm at low tide, good for kids and sunset; some seaweed
- Taling Ngam — south-west, remote, very calm; seaweed more likely
Chaweng
Chaweng is the island’s benchmark beach. The main stretch runs about 7km — consistent white sand, turquoise water, and a gradual shelf that makes it good for swimming. The northern end (Chaweng Noi) is slightly quieter; the central section from the main road access points down to the south is where the beach bars, sun loungers, and most activity concentrate.
Swimming conditions: good from November to April. From May through October, the Gulf of Thailand’s monsoon season can bring rougher surf and the occasional flag warning. The beach does not close, but check conditions before you go in if the sea looks unsettled.
Seaweed: occasional in low season; clears quickly after any swell. Not a persistent problem at Chaweng the way it is further south.
Crowd level: high. High season (December-January, July-August) sees the beach genuinely packed in the mid-morning onwards. Go before 9am for the best experience.
Access: central Chaweng is easily walkable from most Chaweng hotels. Sunbeds and umbrellas available; free beach access always available.
Lamai
Lamai is Samui’s second-best beach for good reason. The main stretch is around 4km, with the central section offering the nicest sand and conditions. Swimming is good in the same November-April window as Chaweng.
The southern end changes character — the sand narrows and large rounded granite boulders appear in the water. This is where Hin Ta and Hin Yai (the grandmother and grandfather rocks) are located: two naturally shaped rock formations that have been a local attraction for decades. Worth seeing, but it is a photo stop rather than a swimming spot.
The beach is less crowded than Chaweng and the town behind it a bit more relaxed. Prices at beachside restaurants and for sun loungers are typically lower.
Silver Beach (Crystal Cove / Coral Cove)
Silver Beach goes by several names — Crystal Cove and Coral Cove appear on different maps — and sits on the east coast between Chaweng and Lamai. It is small, about 250 metres, with fine white sand and clear water that is among the best on the island for snorkelling close to shore.
The small scale means it fills up fast. Get there before 10am or after 3pm to avoid the squeeze. There is a beach bar and a few restaurants on the rocky headland above.
This is one of the few Koh Samui beaches where you can meaningfully snorkel without getting on a boat — tropical fish are common around the rock formations at each end of the cove.
Note: the beach sits at the bottom of a steep access road. If you are not on a scooter or with a driver, getting here requires some planning.
Choeng Mon
The coves at Choeng Mon face north, which shelters them from the main Gulf swell. The result is reliably calm, clear water — some of the most consistent swimming on the island regardless of season. The beach is sandy with a few rock formations at the edges of each cove.
This is the best beach on the island for families with young children — the calm water, gradual depth, and limited boat traffic make it the most forgiving environment for kids who are not strong swimmers. Koh Samui with kids covers the full family picture.
Upscale resorts line the headland, but the beach itself is public. A short walk between coves is worth it — each one has a slightly different character.
Bophut
Bophut Beach is on the north coast, west of Chaweng. The sand is darker and coarser than the east coast beaches, and the swimming is decent but not exceptional. Its appeal is not really the beach — it is the Fisherman’s Village behind it, with its restaurants, boutique hotels, and Friday walking market.
Good for a morning swim before exploring the village. Not the right choice if the beach itself is your main reason for coming to Koh Samui.
Maenam
Maenam’s beach is long — around 4km — and almost always quiet. The sand is pale and the water is generally calm, but the swimming is inconsistent. The beach can pick up seagrass from the bay, and the sea floor is shallower and murkier in places than the east coast beaches.
Its value is not the beach itself but its access to the ferry pier for Koh Phangan and the budget accommodation inland. Go to Maenam for the price and the quiet, not the swimming.
Bang Por
Bang Por sits on the north-west coast, past Maenam. It is undeveloped — a long strip of sand with a handful of local restaurants at the western end and almost no tourist infrastructure. The water is calm and shallow, and it is rarely busy.
This is a good spot for an afternoon drive if you want somewhere that feels genuinely un-curated. Bring what you need; the facilities are minimal.
Lipa Noi
Lipa Noi is on the west coast, roughly halfway down the island. The beach faces west, which means you are watching the sun set over the Gulf rather than rise over it. The water is calm — often flat — particularly at low tide, when it becomes shallow and ideal for paddling with young children.
The trade-off is seaweed. Low tide exposes quite a bit of it, and it varies by season. High tide covers the sand further, but the swimming area becomes better. Check conditions when you arrive rather than assuming.
Sunset here is genuinely good — the view opens over the water with the mainland silhouette in the far distance on clear evenings.
Taling Ngam
Taling Ngam is on the south-west coast, more remote than Lipa Noi and less visited. The beach is shaded by coconut palms and very calm. It is also more likely to collect seaweed than the east coast, and the tourist amenities are minimal.
Best treated as a detour on a full island loop rather than a base. The view down from the road above is striking — worth stopping for.
Seasonal conditions
November to April: best conditions across the east coast (Chaweng, Lamai, Silver Beach). Gulf swell is low, visibility is good. December-January is peak season — prices and crowd levels at their highest.
May to October: monsoon season brings more rain and occasional rough surf on the east coast. The west coast actually improves in this period — wind direction changes, and Lipa Noi and Taling Ngam get calmer, clearer water. This is low season for the island; prices drop considerably.
Seaweed: Maenam, Lipa Noi, and Taling Ngam are the most affected. Chaweng and Silver Beach least so. Lamai is mid-range and variable.
Where to base yourself
Your beach preference should inform where you stay. See the where to stay guide for a full area-by-area breakdown, and browse /hotels/ to compare options across the main beaches. For a good look at all the island’s options, the Koh Samui itinerary guide includes a suggested route that covers most of these beaches in four days.
