UV Index / Thailand / Koh Samui
UV Index in Koh Samui
Current UV index, monthly UV averages, and a practical tanning guide.
Live UV index
Live conditions are temporarily unavailable. Monthly UV averages are shown below.
Coordinates: 9.51, 100.06
Monthly UV index — Koh Samui
Jan10
Feb11
Mar12
Apr12
May11
Jun10
Jul10
Aug10
Sep10
Oct9
Nov9
Dec9
Best months for tanning
Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
Tanning guide
Peak UV in Koh Samui is typically 12. Use broad-spectrum SPF, limit midday exposure, and adjust time outdoors to your skin type and current conditions.
Frequently asked questions
What is the UV index in Koh Samui today?
Check the live conditions above for the latest local UV reading.
When is UV strongest?
UV is usually strongest around local midday. Cloud cover, season, altitude, and reflection can change exposure.