Best Time To Visit Thailand

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What is the best time to visit Thailand?

The best time to visit Thailand is November to April. Dry days, calm seas, and it covers both the cool months and Songkran.

November to February is the most comfortable, and the only stretch when Bangkok, Chiang Mai and both coasts work on one trip. March and April are hot inland but still excellent on the Andaman beaches.

After April the coasts split. Phuket and Krabi take the monsoon from May to October, while the Gulf islands stay dry into September. In those months you change coast, not country.

Bangkok, Pattaya and Central Thailand: November to February
Chiang Mai and the north: November to February
Phuket, Krabi and the Andaman coast: November to April
Koh Samui, Koh Phangan, Koh Tao: January to September
Diving the Similan Islands: November to April

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More about Best Time to Travel to Thailand

Thailand Weather in November and December

The best window of the year. The monsoon clears in November and December is dry and sunny nationwide, 15°C in the northern hills to 33°C on the coast. The Gulf islands are the exception and stay wet into early December.

Events
  • Loy Krathong and Yi Peng in Chiang Mai, usually November.
  • New Year on the beach, from Bangkok rooftops to Koh Phangan.

Thailand Weather in January and February

Peak season, and the most settled weather. 16°C to 34°C, dry on both coasts, with the year’s best underwater visibility. February is the driest month and the best of the year for the Gulf islands.

Rates are at their highest, and smoke haze usually starts over the north in late February.

Events
  • Chinese New Year, late January or February.
  • Chiang Mai Flower Festival, first weekend of February.

Thailand Weather in March and April

Hot, and still good for the beaches. 32°C to 40°C inland and hardest in Bangkok. The Andaman coast stays dry with calm seas through April, so Phuket and Krabi still work.

Skip the north. Crop burning leaves Chiang Mai under heavy smoke haze through both months, and March is usually the worst of it.

Events
  • Songkran, 13 to 15 April, the biggest event of the Thai year.

Thailand Weather in May and June

The monsoon arrives, and prices fall. 25°C to 34°C and humid. Rain reaches the Andaman coast in May and the sea turns rough, so island tours get cancelled at short notice.

The Gulf islands stay dry, which makes Koh Samui the better beach from here until September. The north turns green and the air is finally clear of haze.

Thailand Weather in July and August

Wettest on the Andaman side, workable everywhere else. Rain comes as a heavy hour or two in the afternoon rather than all day. 25°C to 33°C.

Bangkok and the north are fine and at their cheapest. Koh Samui, Koh Phangan and Koh Tao are dry, and are the beaches to pick in these months.

Thailand Weather in September and October

The last of the rain, and the best value. September is the wettest month of the year. By late October the Andaman coast is drying out and peak season is opening again. 25°C to 33°C.

The Gulf islands turn the other way and begin their own wet season in mid-October.

Events
  • Phuket Vegetarian Festival, usually late September or October.

Best Time to Visit Thailand by Interest

Beaches and islands: Andaman coast (Phuket, Krabi) November to April. Gulf islands (Koh Samui, Koh Tao) January to September.
Diving: November to April on the Andaman side, clearest water in December and January.
Trekking and the north: November to February. Avoid March and April for smoke haze.
Festivals: Loy Krathong in November, Songkran 13 to 15 April.
Lowest prices: May to October.
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