Koh Samui beaches do not offer a wide range of snorkeling opportunities, but the right spots around the island offer a glimpse of tropical marine life. Koh Samui is an offbeat place for snorkeling. Swim with large schools of fish that pass through coves and deep canyons.
Best Time to Go Snorkelling In Koh Samui
The best time to enjoy snorkeling in Koh Samui is from December to February, the peak season due to calm seas and moderate temperatures. You can also visit during the hot season if you can bear temperatures above 30 degrees celsius. September to November is a strict no-no as the monsoon rolls in, and the sea can be a bit unpredictable. Visibility is also not high during this time.Best Places for Snorkelling In Koh Samui
1. Coral Cove

Location: It lies inside the area of Hi Coral Cove bungalow between Chaweng and Lamai. There will be a clear red sign besides the main road so you shouldn’t have a problem in finding it.
2. Silver Beach

Location: Maret, Ko Samui district, Surat Thani, Thailand. You have to pass through a resort to get there. There are no charges to enter.
Places to stay and eat: There are many good hotels and resorts which have been long established. Some excellent places for accomodation and eating are:
1) Crystal Bay Beach Resort
2) Silver Beach Resort
3) Thongtakian Resort
4) Crystal Bay Yacht Club
3. Chaweng Beach

Don’t miss out on the night parties at the beach! There are DJs, drinks, food, and dance parties every night, and it is undoubtedly a memorable experience!
Location: Surat Thani, Thailand
Places to Stay: Some resorts and accommodation facilities are:
1) Nora Beach Resort and Spa
2) Amari Koh Samui
3) The Briza Beach Resort
4) Arc Bar Beach Resort
4. Taling Ngam

Location: Koh Samui District, Surat Thani, Thailand
Places to Stay:
1) Conrad Koh Tamui
2) Intercontinental Samui
3) Conrad Koh Samui Residences
5. Ao Phang Ka

Location: It is located in the Southwestern part of Koh Samui in Surat Thani province
Places to Stay:
1)Coconut Villa Resort
2) Phangka Paradise Resort
3)Conrad Koh Samui
6. Koh Madsum

You can book many speed boats online, making the entire process hassle-free.
Location: South of Koh Samui, close to Coral Island
7. Koh Taen

Best Operators for Snorkelling in Koh Samui
1. Calypso DivingAddress: 27, Koh Samui, Surat Thani
Price: Packages start at THB 3,500
2. Asian Trails
Address: Bo Put, Ko Samui District, Surat Thani
Price: Packages start at THB 1525
3. Silent Divers
Address: 9/8 Moo 3 Bophut Ko Samui Ko Samui District
Price: Packages start at THB 2740
4. Tours Koh Samui
Address: 24/3 Moo 5 T. Bophut, Koh Samui
Price: Packages start at THB 2,010
5. Samui Boat Charter
Address: 24 Moo 1 Koh Samui Ko Samui District
Price: Packages start at THB 43,000
Tips for Snorkelling in Koh Samui

1. Equipment: Snorkelling gear is available at most locations, so it is convenient and easy to use the ones provided by the guides. Investing in them would be worthwhile if you are a regular snorkeller and intend to use your gears frequently. The right equipment is generally expensive, and if you are a seasoned snorkeler, you could purchase it from your country of residence or Bangkok.
2. Budget: Costs for snorkeling in Koh Samui are generally in the range of THB 2000 - 4000 or higher for more extended expeditions and Liveboard.
3. Caution: It is best to exercise precaution while underwater and avoid touching corals or marine creatures.
4. Sun Protection: Sunscreen is often recommended around 20 minutes before entering the waters.
5. Note all Beginners: Beginners should take special care not to wander too deep into the waters on their own, carefully follow the guide's instructions, and stay within their groups.
6. Weather Watch: Avoid snorkeling in Thailand during rainy weather and in heavy currents.
Many packages and tours are available for proper adventure snorkeling in Koh Samui. You can easily book them online. Day Trips to the islands start from THB 2200 and can increase depending on the provided facilities.
Koh Samui is, in fact, an excellent place for many other sightseeing excursions, so make sure you take part in these activities. Thus, snorkeling in Koh Samui shouldn't disappoint either. There is a lot to see and do here, so take a deep breath and dive into this beautiful adventure called Koh Samui! Bon Voyage!