Things to Do in Koh Samui in March

The Cooking Class by Samui Native Instructor Geng and O Family develops inside a thatched open-air kitchen on a hillside above Laem Sor. The breeze carries the tang of kaffir lime leaves and the low rumble of a mortar pounding fresh curry paste. Geng walks small groups through a full Thai meal. It starts at a local wet market. The smell of crushed galangal and fermented shrimp paste hangs thick between the stalls there. It finishes back at the family compound with four or five dishes served on banana-leaf platters. They overlook the southern coastline. The hands-on format means you are slicing lemongrass and cracking coconuts yourself. You are not watching a demonstration from behind a counter.

The 3-Day PADI Open Water Diver Course, Koh Samui compresses the full certification into three concentrated days. Confined-water skills are practiced in a sheltered bay near Choeng Mon. Open-water dives are conducted at sites like Sail Rock or the Japanese Gardens off Koh Tao. The granite boulders there are crusted with purple and orange soft corals. Barracuda patrol the thermocline in loose silver curtains. Koh Samui's dive schools run smaller student-to-instructor ratios than the high-volume operations on Koh Tao itself. That means more bottom time per student. It also means less waiting on a crowded boat deck listening to gear clank against aluminium tanks. Surfacing after your first open-water dive to see the green humps of the Ang Thong archipelago stretched across the horizon is the kind of image that stays mapped to the feeling of breathing underwater for the first time.

The Sunrise Stand Up Paddleboard (SUP) Tour in Koh Samui launches before dawn from a quiet stretch of sand. Within twenty minutes the horizon cracks open in bands of copper and violet. Your paddle blade dips into water so still it reflects the coconut palms on shore like tinted glass. The guides lead small groups along the rocky headlands between beaches. They pause at shallow reef patches where the board becomes a glass-bottom window. Parrotfish and triggerfish move in slow flickers of turquoise beneath your feet. The physical effort is real but manageable. The burn settles into your shoulders and obliques. By the time you glide back to the launch beach, the morning heat has arrived. The coffee waiting onshore tastes like the best you have ever had.

The Samui Viewpoint Elephant Pig Island and Snorkeling with Lunch packs a full-day itinerary into a single outing. It begins at one of the southern viewpoints where the island drops away below your feet in layered greens. The sea beyond Koh Tan shifts from jade nearshore to deep indigo at the horizon line. The boat portion motors to Koh Madsum, the so-called Pig Island. A handful of friendly pigs wade in the shallows there. They root through the sand with their snouts while you eat a packed Thai lunch under casuarina trees. The warm breeze carries the faint salt-and-seaweed smell of low tide. Snorkeling stops en route reveal hard-coral gardens. Blue-spotted rays lie half-buried in sand there. The clicking sound of parrotfish feeding on coral carries clearly through the water.

The Koh Samui Chaweng Beach Nightlife Walking Tour starts after dark on the strip where Chaweng's neon signs pool pink and green light across the wet pavement. The bass from competing sound systems thrums through your sternum. A local guide threads you through the lanes behind the main road. You pass open-front bars where Thai boxing plays on mounted screens. The sharp, sweet smell of freshly muddled lime and sugarcane mixes with charcoal-grilled pork skewers from sidewalk vendors. The tour covers the spectrum from reggae beach bars with sand floors to rooftop cocktail spots where the black Gulf stretches out below. The guide's commentary pulls the curtain back on which places cater to which crowds. It explains why certain corners of Chaweng have survived decades of reinvention while others cycle through new concepts every season.

The Koh Samui to Koh Phangan Island Full-Day Cruise with Sunset sails from the north shore of Koh Samui. It carves a slow arc through the strait toward Koh Phangan. The boat anchors in bays that are inaccessible by road. The only sound is water lapping against the hull and the occasional crack of a coconut falling in the tree line above the sand. The itinerary includes snorkeling at coral sites along Phangan's western coast. The underwater terrain drops off sharply there. Schools of fusiliers move in synchronized silver sheets through the blue. A beach stop is long enough to explore the shoreline where smooth granite boulders sit half-submerged. They warm to the touch from hours of direct sun. The return leg is timed so the boat is mid-channel at golden hour. The sun drops behind Koh Samui's mountainous spine. It turns the water around the hull to hammered bronze.