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 March 2026 Sat 26.2 ° C ( 79.2°F )  Partly cloudy |
Feels Like : 28.3 ° C / 82.9°F Humidity : % 89 Pressure : 1013 mb Wind Speed : 31 kmph / 19.2 miles from ESE 
Visibility : 10 km Precipitation (rainfall) : 0.06 mm Cloud (%) : 50 |
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 March 2026 Sat |  Patchy rain nearby |
26.9 ° C | 27.6 ° C | 27.3 ° C | % 73 | 31.7 km/h | 88% |
| 15 March 2026 Sun | Patchy rain nearby |
26.9 ° C | 27.4 ° C | 27.3 ° C | % 75 | 27.7 km/h | 89% |
| 16 March 2026 Mon | Patchy rain nearby |
26.8 ° C | 27.3 ° C | 27.2 ° C | % 76 | 24.5 km/h | 89% |
| 17 March 2026 Tue | Patchy rain nearby |
27.2 ° C | 28 ° C | 27.6 ° C | % 75 | 26.6 km/h | 85% |
| 18 March 2026 Wed | Patchy rain nearby |
27.2 ° C | 28.1 ° C | 27.7 ° C | % 74 | 26.3 km/h | 88% |
| 19 March 2026 Thu | Patchy rain nearby |
27.2 ° C | 27.8 ° C | 27.5 ° C | % 76 | 20.9 km/h | 0% |
| 20 March 2026 Fri |  Sunny |
26.9 ° C | 27.9 ° C | 27.4 ° C | % 75 | 21.6 km/h | 0% |
| 21 March 2026 Sat | Sunny |
27 ° C | 27.9 ° C | 27.5 ° C | % 76 | 23.4 km/h | 0% |
| 22 March 2026 Sun | Partly Cloudy |
27.3 ° C | 27.8 ° C | 27.6 ° C | % 75 | 25.2 km/h | 0% |
| 23 March 2026 Mon | Partly Cloudy |
27.4 ° C | 27.9 ° C | 27.6 ° C | % 73 | 23 km/h | 0% |
| 24 March 2026 Tue | Partly Cloudy |
27.3 ° C | 27.9 ° C | 27.6 ° C | % 76 | 24.1 km/h | 0% |
| 25 March 2026 Wed | Partly Cloudy |
27.2 ° C | 28 ° C | 27.7 ° C | % 75 | 23 km/h | 0% |
| 26 March 2026 Thu | Partly Cloudy |
27.6 ° C | 28.1 ° C | 27.8 ° C | % 76 | 21.6 km/h | 0% |
| 27 March 2026 Fri | Partly Cloudy |
27.5 ° C | 28.2 ° C | 27.9 ° C | % 77 | 23.4 km/h | 0% |
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