Palm trees on a quiet Koh Mak beach — White Sand Beach Resort @ Ao Kao Bay, Koh Mak, Trat

The shoreline

Beaches of Koh Mak

Long stretches of soft sand, shallow turquoise water, and almost no one in sight.

Speedboat moored on a palm-lined Koh Mak beach with clear turquoise water

Woman relaxing against a leaning coconut palm on a Koh Mak beach

Group running along the beach at sunset on Koh Mak

Couple at a palm-lined beach on Ao Kao, Koh Mak

01 · Beach

Ao Kao (White Bay) Beach

The social heart of the island

The island's longest and most beautiful beach stretching along the southwest coast. Soft white sand and a gently shelving entry into calm turquoise water, lined with bungalow resorts, such as Lazy Day and White Sand Beach Resort, small restaurants and massage huts — yet still blissfully quiet.. The back road behind the beach is where most of the island's restaurants and shops are clustered.

Best forSwimming, easy access, sports, long-stays
WaterCalm, shallow, often clear and turquoise
VibeRelaxed but sociable — the island's main hub

Golden sunset over the calm sea at Ao Suan Yai, Koh Mak

02 · Beach

Ao Suan Yai Beach

The most spectacular sunsets on the island

A long, sweeping bay on the northwest coast — equally beautiful to Ao Kao but quieter and more upscale. Clear water with views toward the tiny island of Koh Kham just offshore. Ideal for couples and anyone wanting a more private, resort-style experience. Home of Koh Mak Resort and Seavana Resort.

Best forSunsets, swimming, couples, snorkeling toward Koh Kham
WaterCalm and clear
VibeQuieter, slightly more upscale

03 · Beach

Ao Pra Beach

Secluded and intimate

A smaller, more hidden bay on the northwest coast, tucked beside Ao Suan Yai. Home to a handful of boutique resorts and almost no foot traffic — the right choice if you want a beach almost to yourself.

Best forPrivacy, couples, remote and lonely
VibeVery secluded

Sunset over the Ao Nid pier with a tall palm silhouette, Koh Mak

04 · Beach

Ao Nid Bay

The local side of the island

Where the main pier sits. Less a swimming beach and more a working waterfront — fishing boats, seafood restaurants, and the island museum. Worth visiting for the authentic local atmosphere.

Best forLocal food, cultural interest, arrivals & departures of Bonsiri Boat and Koh Mak Ferry
Home toKoh Mak Seafood restaurant and the Koh Mak Museum. Sunrise location and early birds' favourite pier.

Swimmers and snorkelers in clear turquoise water with a sailboat anchored off Koh Kham

05 · Beach

Koh Kham (Day Island)

Powder sand, black rocks, perfect snorkeling

Not technically part of Koh Mak, but the most popular day trip — a tiny islet just offshore from Ao Suan Yai with powder-white sand, black volcanic rocks, and excellent snorkeling. Most resorts run daily boat trips, and on calm mornings it's reachable by kayak in about thirty minutes. Sporty people swim the distance of 1,100 meters from Koh Mak to Koh Kham easily within 45 minutes.

Best forSnorkeling, day trips, photography
Getting thereResort boat trip or ~30 min kayak from Ao Suan Yai. We recommend visiting early morning or late afternoon to avoid the crowds from Koh Chang.