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Koh Samet

The resort of Koh Samet, located in the Koh Samet National Park, is a utopia for visitors who wish to explore Thailand’s natural beauty close to the capital Bangkok. Koh Samet’s promixity to Bangkok sees It transform on weekends from a sleepy resort to a bustling party destination as the capital’s residents seek to escape the city and enjoy its charms.

With fantastic weather all year round and a range of accommodation to suit all budgets, Koh Samet offers a multitude of bars, restaurants and resorts on every beach. Budget tourists to Koh Samet can also camp on many of the beaches, whilst those looking for a greater degree of luxury can enjoy spectacular sunsets from one of the many stylish resorts on the west coast.

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What you’ll love most about Koh Samet

  • Relax on the soft sands of Sai Kaew Beach, Koh Samet’s most popular and lively beach, with its clear turquoise waters, beachfront bars, and water sports activities, perfect for sunbathing and swimming
  • Explore the nearby islands and attractions on island-hopping tours from Koh Samet, including Koh Kudee, Koh Talu, and Koh Kham, where you can discover secluded beaches, snorkel in pristine waters, and enjoy the island’s natural beauty
  • Escape to the tranquil shores of Ao Prao Beach, a secluded paradise on Koh Samet’s western coast, with its calm waters, swaying palm trees, and luxurious beachfront resorts, offering a serene retreat from the crowds
  • Dive into the waters surrounding Koh Samet and enjoy a variety of water sports and activities, including snorkelling, scuba diving, jet skiing, and parasailing, providing thrills and excitement for adventure seekers of all levels
  • Witness breathtaking sunsets over the Gulf of Thailand from one of Koh Samet’s scenic viewpoints, such as Ao Phai Viewpoint or the Sunset Bar at Sai Kaew Beach, offering panoramic vistas and romantic moments
  • Experience the vibrant nightlife of Koh Samet at the island’s beach bars, restaurants, and clubs, where you can enjoy live music, fire shows, and beach parties under the stars, creating unforgettable memories with friends and fellow travellers
  • Ao Kiu Na Nok Beach, Koh Samet - Tourism Authority of Thailand

Average temperature

Information below is based on average highest temperature for each month.

  • 32℃
  • 32℃
  • 33℃
  • 34℃
  • 34℃
  • 33℃
  • 32℃
  • 32℃
  • 32℃
  • 32℃
  • 33℃
  • 32℃
  • 3
  • 5
  • 7
  • 11
  • 21
  • 23
  • 24
  • 25
  • 24
  • 19
  • 9
  • 3

Information above is based on the average number of days which experience some form of rainfall for each month.

Rainfall

When to Visit

Below gives you information and a rating of the best time of year to visit.

January

One of the most comfortable times of year, with warm days around 27–30°C and relatively low humidity. Seas are generally calm and clear, making it ideal for swimming, snorkelling and boat trips around the island. Evenings tend to be lively along the main beaches, with relaxed waterfront dining and fire shows.

February

Conditions remain settled and sunny, with temperatures close to 30°C. The sea is often particularly clear at this time of year, and the island’s beaches are well suited to long afternoons by the water. Early mornings are pleasant for coastal walks before the sun becomes stronger.

March

Temperatures begin to climb, often reaching 31–33°C. Sea breezes help keep the heat manageable, and the water remains inviting for swimming. It’s a good time for boat excursions around the smaller coves and rocky headlands that dot the coastline.

April

Hot and bright, frequently 32–34°C. Thai New Year celebrations bring a lively atmosphere to the island, with water-splashing festivities taking place along the beaches and in the small village streets. Swimming and shaded beachfront cafés offer welcome relief from the heat.

May

Humidity increases and the first scattered showers appear. Rain typically falls in brief bursts, leaving plenty of sunny intervals. Visitor numbers tend to ease slightly, creating a more relaxed feel across the beaches.

June

Warm and occasionally showery, around 29–31°C. Compared with many other Thai islands, Ko Samet often sees slightly less rainfall during the monsoon period. Calm mornings frequently give way to passing afternoon showers before clearing again later in the day.

July

A mix of sunshine and tropical rain. Temperatures stay close to 30°C, and the island’s beaches remain appealing between showers. Weekends can feel lively as visitors arrive from Bangkok for short breaks.

August

Similar conditions continue, with alternating sunny spells and brief rainfall. The sea stays warm and suitable for swimming, and the island’s small coves provide sheltered spots when winds pick up.

September

Typically the wettest period of the year, with heavier showers and cloudier days. Even so, rain rarely lasts all day, and quiet beaches and lush vegetation give the island a calm, unhurried atmosphere.

October

Rain gradually begins to ease, and clearer spells become more frequent. Temperatures remain around 29–31°C. With fewer visitors than the peak winter months, it can feel like a peaceful time to explore the coastline.

November

Conditions improve noticeably as the dry season returns. Sunny days and calmer seas make beach visits and snorkelling more enjoyable again, while the island’s restaurants and bars regain their lively evening rhythm.

December

Warm, dry and bright, usually 27–30°C. The festive season brings a cheerful buzz to the island, with busy beaches during the day and relaxed dining and entertainment along the shore once the sun goes down.

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