Weather now in Koh Samui
Updated: Oct 13, 11:42 Thailand time
Light drizzle. Feels like 30°C.
16-day weather calendar
Forecast-style calendar based on available API data.
Seasonal travel notes for Koh Samui
Rainier period
January to April
Rain can be heavier during this period, but it can still work well for flexible trips, quieter travel and better-value stays.
Thailand has no bad seasons — only different travel styles. Koh Samui has a different weather pattern from Phuket, so planning by region matters.
Same period last year in Koh Samui
Historical weather from 2025-10-13 to 2025-10-28. Updated: Oct 13, 11:42 Thailand time.
Historical values are based on archived weather datasets and may differ from observations at a specific local station.