Koh Samui’s 50-plus named beaches fall into two categories: the east-coast strips with fine white sand and shallow water that made Samui famous, and the west and north coast beaches that offer sunset views and more local character. The best beaches in Koh Samui concentrate along the east coast from Choeng Mon in the north to Bang Kao in the south, but each has a distinct personality. This guide covers the 7 best swimming beaches with water conditions, facilities, and who each beach suits best, whether you want Chaweng’s full-service party strip or a near-private crescent of sand in the south.
Best Beaches in Koh Samui: East Coast
Chaweng Beach
Koh Samui’s longest and most famous beach at 7 kilometres, with fine white sand, a gentle slope into clear water, and a backdrop of resorts, restaurants, and bars stretching the full length. The northern 2 kilometres (Chaweng Noi to the Amari resort) are quieter and more family-oriented. The central 3 kilometres are the action zone with beach clubs (Ark Bar is the largest, with DJs from 14:00 to 02:00), water sports including jet skis at 1,500 THB per 30 minutes, and 50-plus beachfront restaurants. The southern section near Chaweng Noi is quieter with luxury resorts. Swimming is safe November through August; September and October can bring rough conditions from the northeast monsoon. Jet ski scam warnings apply here as on Phuket: photograph the hull before riding.
Lamai Beach
Samui’s second-largest beach at 4 kilometres, 15 minutes south of Chaweng. Lamai has coarser, golden sand compared to Chaweng’s powder white, but it’s less crowded, cheaper (beachfront Thai meals at 80-150 THB versus Chaweng’s 150-300 THB), and has a more relaxed, mixed-age crowd. The southern end near the famous Grandmother and Grandfather Rocks (Hin Ta and Hin Yai) has a small, swimmable cove with a freshwater stream meeting the sea. Lamai’s central section has a cluster of casual bars and the Sunday Lamai Night Market (17:00 to 23:00) with 80-plus food and souvenir stalls. Suits couples and solo travellers who want a social beach scene without Chaweng’s intensity.
Silver Beach (Haad Thong Ta-khian)
A 250-metre pocket cove between Chaweng and Lamai with the softest sand and clearest water of any Samui beach. The bay is sheltered by granite headlands on both sides, keeping it calm year round, and the shallow entry (waist-deep for 40 metres) makes it the best swimming beach on the island for children and weak swimmers. The Crystal Bay Beach Resort and a small restaurant are the only facilities. Snorkelling around the northern rocks reveals parrotfish and occasional blacktip reef sharks in 2 metres of water. Parking is tight (15 spaces) and fills by 10:00 in high season. Arrive before 9:30 or after 15:00 for a spot.
Best Beaches in Koh Samui: North Coast
Bophut Beach and Fisherman’s Village
Bophut is a 3-kilometre beach anchored by Fisherman’s Village, a 500-metre strip of converted 19th-century Chinese wooden shophouses now housing 30-plus restaurants, boutique hotels, and cocktail bars directly on the sand. The beach itself is coarser than Chaweng but swimmable with a gradual entry. The real draw is the village: the Friday Walking Street Market (17:00 to 22:00) transforms the lane into a pedestrian food and craft market with live music and 100-plus stalls. Coco Tam’s beach bar has beanbags on the sand, fire dancers at 20:00, and cocktails from 200 THB. Suits couples and food-focused travellers who want walkable dining and a more sophisticated atmosphere than Chaweng’s party strip.
Maenam Beach
A 6-kilometre stretch of quiet, golden sand on the north coast with views of Koh Phangan across the water. Maenam has the atmosphere Samui had 30 years ago: family-run bungalow resorts, beachfront Thai restaurants with plastic chairs in the sand, and long stretches of empty beach between developments. Swimming is good year round as the north coast is protected from both monsoon directions. The western end near the Lomprayah ferry pier has a cluster of digital nomad cafes and co-working spaces. Suits long-stay travellers, families on a budget, and anyone looking for old Samui before the development boom.
Choeng Mon Beach
A 1-kilometre horseshoe bay on the northeast tip, 10 minutes from the airport and 15 minutes from Chaweng. The bay is shallow, calm, and ringed by luxury resorts including the Six Senses and SALA Samui. A small offshore island (Koh Fan Noi) is reachable on foot at low tide via a 100-metre sandbar. The beach has a handful of casual Thai restaurants between the resorts and jet ski rentals. Suits families with young children (the shallow bay is the safest on the island), couples at the luxury end, and overnight transit stays near the airport.
