Ko Samui Thailand · 코사무이
Timezone: Asia/Bangkok
Humidity 70.5% · Wind 18.4 m/s
Hourly forecast (today)
Date: 2026-07-28Daily forecast (up to 14 days)
What to wear
Actual feel varies with wind and rain, but the tips below should help you build a comfortable travel outfit.
Koh Samui outfit guide
- • 🌴 Baseline: Koh Samui is warm and humid most of the year. Breathable, sweat-friendly fabrics help. Comfort is often shaped by humidity and being wet (sweat/rain/sea).
- • 👙 Beach/swimming: Getting wet is common. Quick-dry gear helps, and staying damp indoors under strong AC can feel chilly.
- • 🌧️ Shower season (May–Sep): Short intense showers can soak you quickly. A water-safe pouch + spare tee can stabilize the day.
- • 🌧️ Oct–Dec (wetter peak feel): Repeated rain can interrupt transfers. A light rain jacket can feel more practical than an umbrella in some conditions.
- • 🛥️ Boats/island trips: Wind, waves, and visibility can matter more than rain alone. Backup plans are often more important than clothing.
- • ❄️ Indoor AC: Resorts, cafés, and malls can feel cold—one thin layer helps.
- • 👟 Footwear: Rain can make sidewalks slick and puddly. Wet-tolerant shoes with grip are practical.
Travel tips
- • 🕒 Timing: Do outdoor walks early/late and use indoors at midday to reduce fatigue.
- • ☔ Shower rhythm: Pause indoors during bursts and move when it opens.
- • 🛥️ Sea plans: In Oct–Dec, condition variables can be bigger. Treat tours as conditional and keep a Plan B.
- • 🧊 AC fatigue: If you’re damp, indoor chill can feel worse. A thin layer and spare tee help comfort.
- • 💧 Hydration/electrolytes: In heat, hydration often decides how long your day lasts.
FAQ
Q. When is rainy season worst in Koh Samui?
A. Many people experience a wetter peak around Oct–Dec, but patterns vary by year and day. Timing and intensity matter.
Q. Should I avoid boat tours in Oct–Dec?
A. Not necessarily, but schedules can change due to wind/waves/visibility. Planning with a clear backup reduces stress.
Q. Is indoor AC really cold?
A. It can be strong in some places, and if you’re damp it feels colder. A thin layer helps.
Q. Is an umbrella enough?
A. In heavy bursts and wind, umbrellas can be annoying. A pouch and a light rain jacket option helps stability.
Explore Ko Samui
These pages are connected so you can compare conditions and decide for yourself.