Koh Samui Airport (USM) 15 Day Weather Forecast, Koh Samui Thailand
Current weather conditions and 15 day weather forecast for Koh Samui Airport in Koh Samui, Thailand including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at USM
| 14 June 2026 Sun 33.1 ° C ( 91.6°F )  Sunny |
Feels Like : 43.5 ° C / 110.3°F Humidity : % 63 Pressure : 1011 mb Wind Speed : 9.7 kmph / 6 miles from WNW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 25 |
15-day weather forecast for Koh Samui Airport, Koh Samui, Thailand
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 14 June 2026 Sun |  Moderate rain |
28.7 ° C | 29.9 ° C | 29.2 ° C | % 70 | 16.9 km/h | 66% |
| 15 June 2026 Mon | Moderate rain |
28.2 ° C | 30.2 ° C | 29.3 ° C | % 70 | 22.7 km/h | 71% |
| 16 June 2026 Tue |  Patchy rain nearby |
28.6 ° C | 30.2 ° C | 29.4 ° C | % 71 | 24.8 km/h | 62% |
| 17 June 2026 Wed | Moderate rain |
28.5 ° C | 29.9 ° C | 29.4 ° C | % 69 | 27.4 km/h | 70% |
| 18 June 2026 Thu | Patchy rain nearby |
28.5 ° C | 29 ° C | 28.9 ° C | % 69 | 17.6 km/h | 67% |
| 19 June 2026 Fri | Moderate rain |
27.5 ° C | 28.8 ° C | 28.6 ° C | % 71 | 18.4 km/h | 70% |
| 20 June 2026 Sat | Patchy rain nearby |
26.3 ° C | 28 ° C | 27.4 ° C | % 79 | 26.6 km/h | 68% |
| 21 June 2026 Sun | Patchy rain nearby |
27.6 ° C | 28.7 ° C | 28.5 ° C | % 74 | 24.5 km/h | 18% |
| 22 June 2026 Mon | Patchy rain nearby |
28.3 ° C | 29.2 ° C | 28.9 ° C | % 72 | 23 km/h | 39% |
| 23 June 2026 Tue | Patchy rain nearby |
28.1 ° C | 29.5 ° C | 28.9 ° C | % 72 | 24.1 km/h | 57% |
| 24 June 2026 Wed | Moderate rain |
28.1 ° C | 29 ° C | 28.6 ° C | % 74 | 19.4 km/h | 70% |
| 25 June 2026 Thu | Patchy rain nearby |
28.6 ° C | 29.1 ° C | 28.9 ° C | % 71 | 15.1 km/h | 36% |
| 26 June 2026 Fri | Patchy rain nearby |
28.2 ° C | 29.3 ° C | 28.8 ° C | % 72 | 27.4 km/h | 39% |
| 27 June 2026 Sat | Patchy rain nearby |
28 ° C | 28.6 ° C | 28.4 ° C | % 73 | 22.7 km/h | 57% |
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