When to visit Koh Tao?
The decision rests on several criteria. Climate score, tourist crowds and feasible activities.
What you grasp in 5 seconds
Koh Tao offers 2 comfortable months, without any month really to avoid. The gap stays moderate: 8.8 in January vs 5.0 in October.
What to check next
Your tolerance for crowds and budget. The best months concentrate tourist saturation and higher prices. Shoulder seasons offer a good compromise.
Next action
Scroll down to the detailed table to compare month by month, then open the page of the month that interests you.
How we calculate the score
The score combines 4 weighted criteria using 10 years of real climate data (ERA5).
Source : ERA5 · Open-Meteo · 10 years (2016–2025) · Full methodology →
Compare all 12 months
Month-by-month details: temperature, rain, sunshine, score and verdict.
| Month | T° min | T° max | Rain % | mm/day | Sun | Score | Verdict |
|---|---|---|---|---|---|---|---|
| ☀️ January → | 77°F | 81°F | 15% | 3.2mm | 7.8h | 8.8/10 | Best period |
| ☀️ February → | 79°F | 81°F | 14% | 1.9mm | 7.7h | 8.8/10 | Best period |
| ⛅ March → | 79°F | 82°F | 8% | 1.0mm | 8.3h | 6.3/10 | Decent period |
| ⛅ April → | 81°F | 84°F | 18% | 2.9mm | 8.0h | 6.0/10 | Decent period |
| 🌥️ May → | 81°F | 84°F | 35% | 5.0mm | 6.5h | 5.4/10 | Decent period |
| 🌥️ June → | 81°F | 84°F | 35% | 4.3mm | 6.3h | 5.4/10 | Decent period |
| 🌥️ July → | 79°F | 82°F | 36% | 4.7mm | 5.8h | 5.4/10 | Decent period |
| 🌥️ August → | 79°F | 82°F | 32% | 3.9mm | 6.2h | 5.5/10 | Decent period |
| 🌥️ September → | 79°F | 82°F | 40% | 6.0mm | 5.4h | 5.2/10 | Decent period |
| 🌥️ October → | 79°F | 82°F | 50% | 8.5mm | 5.4h | 5.0/10 | Decent period |
| 🌥️ November → | 79°F | 82°F | 42% | 9.1mm | 5.9h | 5.3/10 | Decent period |
| 🌥️ December → | 79°F | 81°F | 23% | 5.2mm | 7.2h | 5.8/10 | Decent period |
Annual temperatures — Koh Tao
Min/max temperature curves observed over the past 10 years (ERA5). Shows climate stability and trend.
For your trip
A few angles depending on what kind of trip you are planning.
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
🎟️ Activities & tours · Koh Tao
GetYourGuide selection · free cancellation
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.
Country · Thailand
🌡️ Climate
🏝️ Tropical stay
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Guides & rankings
Where is Koh Tao ?
Global position + regional geographic context.