Thong Krut Pier

Thong Krut Pier functions as the main departure point for boat excursions along Koh Samui's quieter southern coast, connecting travellers to Koh Tan, Pig Island, and a handful of smaller islands scattered across the Gulf of Thailand. The pier itself is functional rather than scenic, but its value lies entirely in what it provides access to — particularly Pig Island, which receives consistent praise from visitors as a standout stop on multi-island itineraries. Small boat operators work directly from the pier, offering both group tours and private charters. A three-island tour including lunch is available, and private boats can be arranged for around 2,000 baht — notably cheaper than equivalent trips booked through hotels or online platforms. Snorkelling is a common activity on these excursions, though conditions at specific stops can vary. The surrounding area carries a low-key, local atmosphere that sits at some remove from Koh Samui's busier resort stretches, and a quiet beach nearby is better suited to relaxing than swimming. Good to know: Arriving by 9.30am gives the best chance of securing a spot on the first boat out, which typically departs around 10am. Operators on-site are unlikely to accept card payments, so bringing cash is essential. Sun protection is strongly recommended for any time spent on the water, and it is worth checking sea conditions before heading out, as weather can affect departures.