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
| 03 October 2026 Sat 29 ° C ( 84.3°F )  Overcast |
Feels Like : 32.6 ° C / 90.7°F Humidity : % 69 Pressure : 1010 mb Wind Speed : 3.6 kmph / 2.2 miles from ENE 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 95 |
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 |
|---|---|---|---|---|---|---|---|
| 03 October 2026 Sat | Overcast |
28.1 ° C | 29.4 ° C | 28.6 ° C | % 73 | 15.1 km/h | 66% |
| 04 October 2026 Sun | Overcast |
27.5 ° C | 29.3 ° C | 28.4 ° C | % 76 | 21.6 km/h | 84% |
| 05 October 2026 Mon | Overcast |
27.9 ° C | 29.4 ° C | 28.6 ° C | % 74 | 25.6 km/h | 74% |
| 06 October 2026 Tue | Overcast |
27.7 ° C | 29.1 ° C | 28.4 ° C | % 74 | 18.4 km/h | 80% |
| 07 October 2026 Wed |  Light rain shower |
27.5 ° C | 28.6 ° C | 28.1 ° C | % 74 | 15.1 km/h | 85% |
| 08 October 2026 Thu | Light rain shower |
26.5 ° C | 27.7 ° C | 27 ° C | % 79 | 25.9 km/h | 87% |
| 09 October 2026 Fri | Overcast |
25.9 ° C | 28.4 ° C | 27.1 ° C | % 80 | 29.2 km/h | 85% |
| 10 October 2026 Sat |  Light rain |
27.7 ° C | 28.2 ° C | 27.9 ° C | % 74 | 16.9 km/h | 84% |
| 11 October 2026 Sun |  Patchy rain nearby |
27.9 ° C | 28.5 ° C | 28.1 ° C | % 73 | 17.3 km/h | 76% |
| 12 October 2026 Mon | Light rain |
27.1 ° C | 28 ° C | 27.5 ° C | % 76 | 18 km/h | 83% |
| 13 October 2026 Tue | Light rain shower |
24.8 ° C | 27.6 ° C | 26.7 ° C | % 81 | 20.9 km/h | 88% |
| 14 October 2026 Wed | Light rain shower |
24.8 ° C | 27.7 ° C | 26.6 ° C | % 82 | 19.4 km/h | 88% |
| 15 October 2026 Thu | Overcast |
27.2 ° C | 28.6 ° C | 27.8 ° C | % 75 | 22 km/h | 76% |
| 16 October 2026 Fri | Patchy rain nearby |
27.5 ° C | 28.8 ° C | 28 ° C | % 73 | 20.2 km/h | 36% |
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