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
| 30 October 2026 Fri 28.7 ° C ( 83.7°F )  Patchy rain nearby |
Feels Like : 33 ° C / 91.4°F Humidity : % 75 Pressure : 1011 mb Wind Speed : 14.8 kmph / 9.2 miles from ESE 
Visibility : 10 km Precipitation (rainfall) : 0.01 mm Cloud (%) : 100 |
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 |
|---|---|---|---|---|---|---|---|
| 30 October 2026 Fri |  Overcast |
27 ° C | 29 ° C | 28.3 ° C | % 77 | 30.6 km/h | 76% |
| 31 October 2026 Sat | Overcast |
26.3 ° C | 28.8 ° C | 28.3 ° C | % 75 | 15.8 km/h | 76% |
| 01 November 2026 Sun | Patchy rain nearby |
26.6 ° C | 28.9 ° C | 28.1 ° C | % 75 | 13 km/h | 57% |
| 02 November 2026 Mon | Patchy rain nearby |
26.9 ° C | 28.8 ° C | 28.3 ° C | % 74 | 14 km/h | 36% |
| 03 November 2026 Tue | Patchy rain nearby |
26.7 ° C | 28.7 ° C | 28.1 ° C | % 74 | 13.7 km/h | 70% |
| 04 November 2026 Wed | Patchy rain nearby |
26.4 ° C | 28.5 ° C | 27.9 ° C | % 78 | 13 km/h | 72% |
| 05 November 2026 Thu | Patchy rain nearby |
26.9 ° C | 28.5 ° C | 27.6 ° C | % 81 | 9 km/h | 77% |
| 06 November 2026 Fri | Patchy rain nearby |
26.3 ° C | 28.5 ° C | 27.4 ° C | % 79 | 14 km/h | 78% |
| 07 November 2026 Sat |  Light rain shower |
26.5 ° C | 28.3 ° C | 27.2 ° C | % 82 | 15.1 km/h | 86% |
| 08 November 2026 Sun | Light rain shower |
26.1 ° C | 27 ° C | 26.6 ° C | % 85 | 18.7 km/h | 89% |
| 09 November 2026 Mon | Light rain shower |
26.2 ° C | 27.1 ° C | 26.7 ° C | % 83 | 20.2 km/h | 86% |
| 10 November 2026 Tue | Patchy rain nearby |
25.7 ° C | 28.1 ° C | 26.9 ° C | % 82 | 16.2 km/h | 83% |
| 11 November 2026 Wed | Light rain shower |
26.1 ° C | 27.1 ° C | 26.6 ° C | % 83 | 16.9 km/h | 85% |
| 12 November 2026 Thu | Light rain shower |
25.8 ° C | 27.8 ° C | 26.6 ° C | % 82 | 16.9 km/h | 86% |
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