Everything January does well, February does with slightly fewer people. Dry skies, warming seas, and the Gulf islands hitting their stride.
Find a room before you go.
February is many old Thailand hands' favourite month. The weather is as dependable as January's — dry, sunny, low humidity — but the New Year surge has passed, so flights ease a little and the beaches breathe again. Temperatures climb gently through the month without reaching the furnace levels of April.
For the Gulf coast it is a sweet spot. The last of the north-east monsoon is gone, so Koh Samui, Koh Phangan and Koh Tao are calm and clear, and the mainland coast at Ban Krut, Hua Hin and Chumphon runs day after day of faultless beach weather. If you can only pick one month for this stretch of coast, February makes a very strong case.
Affiliate link. If you book through it we earn a commission, at no extra cost to you.
Gulf coast: superb everywhere. Ban Krut and the Hua Hin–Chumphon stretch are dry and breezy with calm, warm water. The Gulf islands are now fully out of the monsoon's reach — Koh Tao's dive sites get clearer by the week, and Samui and Phangan serve up their most reliable stretch of the year.
The Andaman coast remains excellent and busy — flat seas, dependable sun. Bangkok is dry and warming but still comfortable for sightseeing. The north stays lovely and clear early in the month, though it warms noticeably by late February and the first haze can appear in the far north — if trekking around Chiang Mai matters to you, earlier in the month is safer.

This is prime time for anything on or in the water on the Gulf side: snorkelling and diving around Koh Tao, kayaking off Samui's quieter beaches, or simply swimming at Ban Krut, where the sea is calm, warm and effectively private. Long beach walks and coastal bike rides are still comfortable before the hot season arrives.
Where to go? Everywhere works in February, so let crowds decide. The Andaman honeypots stay full; the Gulf coast gives you the same sky with room to spare. A classic February route pairs a few days in Bangkok with a slow run down the coast — Hua Hin, Ban Krut, then a ferry from Chumphon to the islands.

Yes — it is one of the very best months. Weather is dry and sunny on both coasts, the sea is calm, and the January peak-season crush eases slightly, so it feels a touch more relaxed.
Excellent. Ban Krut, Hua Hin and Chumphon are dry with calm seas, and Koh Samui, Koh Phangan and Koh Tao are fully clear of the monsoon — this is one of the Gulf islands' most reliable months.
Very good. The seas are calm and visibility around Koh Tao improves through February into March. Conditions at snorkelling spots like Koh Nang Yuan are typically at their friendliest.
It is still high season, so the famous islands and sights are busy — but noticeably less so than over New Year. Quiet corners like Ban Krut remain genuinely uncrowded all month.
More guides for this stretch of the Gulf coast.