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
| 04 August 2026 Tue 29.9 ° C ( 85.9°F )  Patchy rain nearby |
Feels Like : 35 ° C / 95°F Humidity : % 70 Pressure : 1006 mb Wind Speed : 14.8 kmph / 9.2 miles from SW 
Visibility : 10 km Precipitation (rainfall) : 0.06 mm Cloud (%) : 85 |
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 |
|---|---|---|---|---|---|---|---|
| 04 August 2026 Tue | Patchy rain nearby |
28.5 ° C | 30 ° C | 29.1 ° C | % 73 | 26.3 km/h | 70% |
| 05 August 2026 Wed | Patchy rain nearby |
28.7 ° C | 29.8 ° C | 29.1 ° C | % 74 | 39.6 km/h | 73% |
| 06 August 2026 Thu |  Partly Cloudy |
28.5 ° C | 29.1 ° C | 28.8 ° C | % 75 | 37.8 km/h | 79% |
| 07 August 2026 Fri | Patchy rain nearby |
28.2 ° C | 28.9 ° C | 28.5 ° C | % 76 | 41 km/h | 79% |
| 08 August 2026 Sat | Partly Cloudy |
28.3 ° C | 29.7 ° C | 28.9 ° C | % 75 | 41 km/h | 57% |
| 09 August 2026 Sun |  Sunny |
28.3 ° C | 30.1 ° C | 29.1 ° C | % 73 | 36.4 km/h | 57% |
| 10 August 2026 Mon | Partly Cloudy |
28.4 ° C | 30.8 ° C | 29.2 ° C | % 73 | 34.9 km/h | 60% |
| 11 August 2026 Tue | Partly Cloudy |
28.6 ° C | 29.9 ° C | 29.2 ° C | % 72 | 36 km/h | 57% |
| 12 August 2026 Wed | Partly Cloudy |
28.4 ° C | 30.5 ° C | 29.2 ° C | % 72 | 39.6 km/h | 36% |
| 13 August 2026 Thu | Partly Cloudy |
28.7 ° C | 30.8 ° C | 29.5 ° C | % 71 | 44.3 km/h | 36% |
| 14 August 2026 Fri | Patchy rain nearby |
28.1 ° C | 29.7 ° C | 28.8 ° C | % 74 | 45.4 km/h | 62% |
| 15 August 2026 Sat | Patchy rain nearby |
28.1 ° C | 30 ° C | 28.9 ° C | % 74 | 47.2 km/h | 46% |
| 16 August 2026 Sun | Patchy rain nearby |
26.9 ° C | 29.2 ° C | 28 ° C | % 76 | 52.2 km/h | 73% |
| 17 August 2026 Mon | Patchy rain nearby |
26.8 ° C | 28.5 ° C | 27.7 ° C | % 77 | 38.2 km/h | 80% |
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