Best time to visit Koh Lanta for good weather
When is the best weather in Koh Lanta? Monthly breakdown of temperature, rainfall, and sunshine hours — ranked by what actually matters for your trip.
Best month
February
The driest and sunniest month of the year — and the most expensive.
↑20mm rainfall and 9.5 hours of daily sunshine: the most reliably perfect weather of the year
↑Lowest humidity at 68% — warm but not oppressive even at 33°C
↑Hin Daeng and Hin Muang diving conditions at their absolute best — whale shark season peak
All months ranked — Good weather
Best match
The driest and sunniest month of the year — and the most expensive.
#1 for good weather
Best match
Still excellent — dry season holds, crowds ease, prices begin to soften.
#2 for good weather
Best match
Dry season fully established — paradise conditions return with Christmas crowds and rising prices.
#3 for good weather
Best match
Peak dry season — near-zero rain, perfect seas, packed beaches and high-season prices.
#4 for good weather
Strong option
High season reopens — 95mm is very manageable and the island comes back to life.
#5 for good weather
Strong option
Shoulder season — still mostly good but the pre-monsoon humidity and occasional showers signal change.
#6 for good weather
Worth considering
Deep monsoon — most resorts closed, beaches empty, 195mm and heavy seas.
#7 for good weather
Worth considering
Monsoon arrives — 185mm, rough seas, and half the island begins to shut down.
#8 for good weather
Worth considering
Ghost town — 220mm of rain, almost everything closed, seas too rough for any boats.
#9 for good weather
Worth considering
245mm: the second wettest month — deep monsoon and the island at its quietest.
#10 for good weather
Worth considering
Still deep monsoon at 235mm — the island is technically reopening but conditions are poor.
#11 for good weather
Avoid
The wettest month of the year at 260mm — hard cap forces a weather score of 2.
#12 for good weather