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Koh Samui

Thongson Beach

4.3(464 reviews)

Tucked away from Koh Samui's busier stretches of coastline, Thongson Beach earns its reputation as one of the island's more peaceful natural escapes. The surrounding hillside provides natural wind protection, keeping conditions calm even when other beaches are breezy, while palm trees offer generous shade along the shore. The beach attracts visitors looking for a genuinely unhurried day by the water rather than the organised activity and crowds found elsewhere on the island. The atmosphere here is quietly social — suited to swimming, sunbathing, and simply sitting with a view. The water is generally clear and inviting, and the beach is accessible enough for a half-day visit from other parts of Koh Samui. A short walk east along the shore leads to a quieter stretch where visitors report even prettier water. Jet ski hire is available at the beach, though some visitors have had poor experiences with operators cutting sessions short, so it pays to clarify terms before booking. Good to know: Thongson Beach sits on the Gulf of Thailand side of Koh Samui, where the best conditions typically fall between December and April. The monsoon season, roughly May to October, can bring rougher seas and reduced water clarity. There are no published opening hours for beach facilities, so arriving with your own supplies — sun protection, water, and snacks — is a practical precaution, particularly outside peak season.

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Experience hints

Hidden gem

Pair your visit. After Thongson Beach, round out your day in Koh Samui with contrasting stops nearby.

Reviews from Google

Decided to visit this beach that I had totally overlooked each time I visited Koh Samui. It was a good choice to visit as this is probably one of the most wonderful beaches on the island. The water is really clear and it's a good place to swim and relax. The water is also very shallow, which allows the water to be pretty warm. Definitely worth visiting!

One of the more quiet beaches of Koh Samui. You won’t notice if there’s a lot of wind because it is “protected” from the hill. There are plenty of spots with shade from the palmtrees. Only at the end to get there, there is a sand road. But not difficult to drive.

DO NOT JETSKI HERE – SERIOUSLY, DON’T. Read why: I usually jetski here without any problems, but today was just ridiculous. I had been riding for barely 8 minutes(booked 20 min) when the jetski suddenly stopped working. Later we found out there was plastic stuck inside the engine because people pollute the ocean. Because of that, I could only drive back at around 8 km/h — no speed, no fun, nothing. After about 15 minutes struggling back, I finally reached the beach. We then asked, very normally, if I could get maybe 10 more minutes since I only had about 8 minutes of real jetski time before it broke. My Thai girlfriend explained it politely… and then one of the guys suddenly got angry at her. He even asked if we “had a problem,” acting like he wanted to start a fight. The woman there said it was my fault and that they couldn’t do anything. Absolutely unbelievable. I normally jetski here with fun, but this was just shameful. Unfriendly people, zero responsibility for their own equipment, and they even try to blame you. Never jetski here. Horrible service and plenty of other places where they treat you like a human being.

A sample of visitor reviews from Google. Read all 464 reviews on Google.

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Thongson Beach: Frequently Asked Questions

Is Thongson Beach worth visiting?

Thongson Beach holds a 4.3★ rating from 464 Google reviews — a strong rating for beaches in Koh Samui.

When is the best time to visit Thongson Beach?

The best months to visit Koh Samui are January – August, 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 Thongson Beach located?

Thongson Beach is at Thongson Beach, Surat Thani 84320, Thailand, in Koh Samui. Getting around Koh Samui: Songthaews (fixed routes around the ring road); Motorbike or scooter rental.

Visitor Information

Best time to visit

January – August

Avoid: October – December (Gulf Coast monsoon)

Rainy season

October – December

Avg. temperature

24°C – 32°C(75°F – 90°F)

Crowds

High

Peak: July – August & December

Getting there

Koh Samui Airport (USM) has direct flights from Bangkok and regional hubs (Bangkok Airways monopoly). Ferry from Surat Thani takes ~1.5 hrs — a cheaper option.

Getting around

  • Songthaews (fixed routes around the ring road)
  • Motorbike or scooter rental
  • Taxis (metered or negotiate upfront)
  • Grab available in main areas

Where to stay near Thongson Beach

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Tips for Visiting Beaches

Check Monsoon Windows

Andaman coast beaches (Phuket, Krabi) have rough seas May–October. Gulf beaches (Samui, Hua Hin) are roughest October–December. Plan your beach trip around these windows for calm water and safe swimming.

Go Early for Empty Sand

Even the busiest beaches are nearly deserted before 9 AM. Sunrise walks on Kata, Chaweng, or Railay are magical — and you'll beat the heat for a morning swim.

Use Reef-Safe Sunscreen

Many Thai marine parks ban chemical sunscreens that damage coral. Bring reef-safe (mineral/zinc-based) sunscreen from home — it's harder to find and pricier in Thailand.

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