Outdoor Wedding Weather for Koh Samui, Surat Thani, Thailand

A full score/window breakdown isn't available for outdoor wedding weather yet — see the day-by-day evidence below.

Day	High / Low	Rain	Wind	Decision
Tue	84° / 74°F	97%	7 mph	Plan an alternative Rain likely — 97% chance of precipitation — at or above NWS's "likely" forecast-language threshold (≥60%).
Wed	80° / 71°F	100%	6 mph	Plan an alternative Rain likely — 100% chance of precipitation — at or above NWS's "likely" forecast-language threshold (≥60%).
Thu	80° / 72°F	99%	6 mph	Plan an alternative Rain likely — 99% chance of precipitation — at or above NWS's "likely" forecast-language threshold (≥60%).

The daily decision cites published thresholds (NWS forecast-language rain bands, NOAA Heat Index tiers, NWS Wind Advisory criteria, EPA AQI breakpoints) applied to this location's own forecast — not a generic score. The hourly best-window scan above additionally factors in comfort, wind and lightning alerts. Soil temperature and licensed local closure or water-quality data are shown only when available; they are not inferred. Always follow official safety notices.

View full forecast for Koh Samui, Surat Thani, Thailand →

What is the best weather day for wedding in Koh Samui, Surat Thani, Thailand?

Fri looks like the best day for wedding in Koh Samui, Surat Thani, Thailand, with a 94% chance of rain and winds around 9 mph. Wed is the day to avoid, at 100%.