Temperature
Warm by day, warm at night.
Koh Tao is usually most comfortable from January to March. Typical daytime highs range from 78–83°F across the year. Rain is frequent in many months.

Warm by day, warm at night.
It rains on most days. About 23 wet days, more than in most months.
Cloudier spells limit sunshine.
Warm days, with humid periods.
In November, days and nights feel about the same, around 80°.
Overcast skies this month.
November's typical breeze keeps the air from feeling as stagnant.
November stays around 78°F through the day and night.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 78 | 76 | 1.0 | 5 | 10.5 | 77 | 83 |
| Feb | 79 | 77 | 2.6 | 10 | 10.8 | 77 | 83 |
| Mar | 80 | 78 | 1.5 | 9 | 10.8 | 78 | 85 |
| Apr | 82 | 79 | 4.0 | 13 | 11.1 | 78 | 86 |
| May | 83 | 80 | 7.7 | 20 | 10.5 | 80 | 87 |
| Jun | 82 | 79 | 3.6 | 19 | 9.7 | 79 | 86 |
| Jul | 82 | 78 | 5.8 | 21 | 9.4 | 80 | 85 |
| Aug | 82 | 78 | 5.1 | 20 | 9.5 | 80 | 85 |
| Sep | 81 | 78 | 7.2 | 22 | 8.9 | 81 | 85 |
| Oct | 80 | 77 | 10.9 | 28 | 8.9 | 82 | 85 |
| Nov | 80 | 77 | 12.7 | 23 | 9.3 | 80 | 84 |
| Dec | 79 | 77 | 6.3 | 12 | 9.9 | 77 | 83 |
Similar climates
Want a side-by-side climate view? Compare Koh Tao with Gili Islands.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 22, 2026
Data & methodology