100 Degrees East
A highly regarded tour operator running snorkeling, kayaking, and diving trips to Ang Thong National Marine Park.
Plan your visit
- Hours
- Daily 09:00–18:00
Carry Your Passport or a Copy
Clubs and some bars check IDs strictly, especially in Bangkok's Thonglor, RCA, and Sukhumvit areas. A photo of your passport info page on your phone usually works, but carrying a laminated photocopy is safer.
Details
- Address
- 23, Bangrak Beach T, 5, Tambon Bo Put, Amphoe Ko Samui, Chang Wat Surat Thani 84320, Thailand
- Phone
- +66 86 282 2983
- Website
- www.100degreeseast.com
Full opening hours
Koh Samui after dark
Something to book for the evening in Koh Samui.
Why go, and how to do it well
Based on Bangrak Beach in Koh Samui, 100 Degrees East is a well-established water sports and tour operator specializing in guided excursions to Ang Thong National Marine Park. The company runs full-day boat tours combining snorkeling and kayaking, as well as diving trips suited to varying experience levels — including those returning to the water after a long break.
Visitors consistently highlight the professionalism and warmth of the crew, noting that the team creates a genuinely relaxed and safe atmosphere on the water. Tours are described as well-organized from start to finish, with activities structured to showcase different aspects of the marine park — from underwater snorkeling among fish to kayaking through the park's distinctive coastal scenery. The operation caters to couples, solo travelers, and groups alike.
Practically speaking, the office operates daily from 9am to 6pm, making it straightforward to call in, ask questions, or book in person. Given the popularity of Ang Thong tours, booking in advance is advisable, particularly during peak season between November and February. Visitors planning a diving trip who haven't been in the water for some time can expect the team to accommodate their pace. Check the website at www.100degreeseast.com for current tour schedules, pricing, and availability before arrival.
Written by Mac Kiley · Updated Aug 2026
Stay within reach of 100 Degrees East
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Koh Samui after dark
Something to book for the evening in Koh Samui.
Around here, on foot
Well-rated places within a short walk of 100 Degrees East, nearest first. Minutes are at an easy pace in the heat.
- 1 minBangrak BeachBeaches · 100 m · 4.3★
- 2 minSamui Luxury BoatsActivities & Tours · 120 m · 4.9★
- 2 minThe Privilege Hotel EzraHotels & Resorts · 170 m · 4.3★
- 3 minChantara Junk BoatActivities & Tours · 260 m · 4.9★
- 3 minChi SamuiRestaurants & Food · 270 m · 4.6★
- 4 minAmezcua SpaWellness & Spas · 330 m · 5.0★
Experience hints
Pair your visit. After 100 Degrees East, round out your day in Koh Samui with contrasting stops nearby.
Reviews from Google
We had the most fantastic day out with 100 Degrees East on a snorkelling and kayaking trip to Ang Thong National Marine Park. From start to finish, everything was incredibly well organised. The team’s commitment to safety was clear throughout the day, which meant we felt completely safe and really well looked after at all times. The crew were outstanding — the perfect mix of fun and genuinely caring. They created such a relaxed, happy atmosphere while still being totally professional. Having a small group made all the difference. We were so glad not to be on one of the big, crowded tours. It felt personal, unhurried, and much more special. The crew clearly know Angthong inside out — they took us to stunning spots and expertly avoided the worst of the crowds, which made the whole experience feel even more magical. The snorkelling was incredible — we saw loads of tropical fish and the water was beautifully clear. It really was suitable for all abilities too, with multiple guides taking out small groups of around four people at a time, so everyone felt comfortable and supported. We had so much fun from start to finish and would 100% recommend them. Pro tip: you cannot apply enough sunscreen to the backs of your legs when snorkelling!
This is the best quality tour operator I've ever been with, and I've used many similar operators all over the world. I took a boat tour to Ang Thong N.P. from Ko Samui for some snorkeling, kayaking, and short hikes. It was a full day with them. 10° East customer service was top notch. Every little detail was thought of and I felt like I was royalty being waited on. Excellent service and professional guides and captain. The boat only had 11 people on board, 12 is their ideal and what sets them apart from the tourist factories. These folks are all about quality of service. It's worth the tiny bit more you pay to go with these folks. 5-stars easily.
I went diving with them at Christmas 2025 in Thailand. After not diving for a long time, they created a professional and comfortable atmosphere. In my opinion, their service is truly top-notch, attentive from the moment you arrive until you leave. All services are practically perfect. Very high level of quality in terms of diving expertise, good presentation and maximum attention to the customer. A special thanks to Dominic for looking after me after more than 13 years without diving.
A sample of visitor reviews from Google. Read all 690 reviews on Google.
23, Bangrak Beach T, 5, Tambon Bo Put, Amphoe Ko Samui, Chang Wat Surat Thani 84320, Thailand
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All within 2.4 km of 100 Degrees East.
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Tips for Visiting Nightlife & Bars
Know the Closing Times
Legal closing time is 2 AM for most venues, though enforcement varies. In Bangkok's designated entertainment zones (RCA, Silom Soi 2/4, Khao San), some clubs stay open until 4 AM. Islands tend to be more relaxed about hours.
Buy Bucket Drinks Cautiously
Island bucket drinks (mixed spirits in a small bucket) are cheap and fun but notoriously strong and inconsistent. Stick to one, stay hydrated, and never leave your drink unattended at beach parties.
Arrange Your Ride Home
Use Grab (ride-hailing app) to get home safely — taxis outside nightlife areas late at night often refuse meters. Set up the app before going out, and keep your phone charged.
100 Degrees East: Frequently Asked Questions
Is 100 Degrees East worth visiting?
100 Degrees East holds a 5.0★ rating from 690 Google reviews, placing it among the highest-rated nightlife & bars in Koh Samui.
What are the opening hours of 100 Degrees East?
100 Degrees East is typically open 09:00–18:00 — see the full day-by-day schedule in the location info on this page. Hours can change on Thai public holidays, so check ahead for holiday visits.
When is the best time to visit 100 Degrees East?
The best months to visit Koh Samui are January – September, with the most reliable weather. Crowds peak in July – August & December — going early in the day usually means fewer people. Months to think twice about: October – December (Gulf Coast monsoon).
Where is 100 Degrees East located?
100 Degrees East is at 23, Bangrak Beach T, 5, Tambon Bo Put, Amphoe Ko Samui, Chang Wat Surat Thani 84320, Thailand, in Koh Samui. Getting around Koh Samui: Songthaews (fixed routes around the ring road); Motorbike or scooter rental.
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