SeasonMapKo Tao (Koh Tao) weather by month
Thailand
The best time to visit Ko Tao (Koh Tao) is February to April — 91/100 in March, 27°C and 7 rainy days. The best season is the dry season, January to April (87/100 on average).
The worst month is November at 62/100 — hot, soaked, clean air. See November →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit Thailand →
Ko Tao, month by month
Comfort score out of 100 for the kind of trip Ko Tao is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
| Month | Score | Tier | High | Rain | Sun | Crowds | On |
|---|---|---|---|---|---|---|---|
| JanJanuary | 83 | A | 26°C | 9 d | 10 h | Busy | 1 |
| FebFebruary | 89 | A | 27°C | 8 d | 11 h | Busy | 1 |
| MarMarch | 91 | S | 27°C | 7 d | 11 h | Busy | 2 |
| AprApril | 84 | A | 28°C | 12 d | 11 h | Peak | 3 |
| MayMay | 77 | B | 28°C | 21 d | 10 h | Peak | 2 |
| JunJune | 80 | A | 28°C | 19 d | 9 h | Busy | 1 |
| JulJuly | 74 | B | 28°C | 21 d | 9 h | Busy | 1 |
| AugAugust | 79 | B | 28°C | 19 d | 9 h | Busy | 1 |
| SepSeptember | 70 | B | 27°C | 22 d | 8 h | Busy | 1 |
| OctOctober | 63 | C | 27°C | 26 d | 8 h | Busy | 1 |
| NovNovember | 62 | C | 27°C | 22 d | 8 h | Quiet | 1 |
| DecDecember | 73 | B | 26°C | 13 d | 9 h | Busy | 2 |
What's on in Ko Tao through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
Crowds in Ko Tao in March
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusyClear water, dive season, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet