Weather in Ko Samui, Thailand 🇹🇭
The current temperature in Ko Samui is 28°C, light rain shower, feeling like 32°C. The air is at 75% humidity and winds are about 21 km/h, and the UV index is 2 (low). In the days ahead, expect temperatures in Ko Samui from about 25°C to 28°C.
Hourly Forecast for Ko Samui
14-Day Forecast for Ko Samui
Light rain shower
Light rain shower
Light rain shower
Light rain shower
Overcast
Light rain shower
Light rain shower
Patchy rain nearby
Patchy rain nearby
Overcast
Overcast
Light rain shower
Light rain shower
Light rain shower
Additional Forecasts for Ko Samui
Air Quality
Historical Weather
Weather Forecasts for Other Cities in Thailand
Best Time to Be Outside in Ko Samui Today
The most comfortable window in Ko Samui today looks like 15:00 to 18:00, when it is around 28°C. The next likely rain is around 17:00.
Frequently Asked Questions about Weather in Ko Samui
What is the temperature in Ko Samui right now?
The current temperature in Ko Samui is 28°C (83°F), light rain shower (feels like 32°C).
What's the weather like in Ko Samui right now?
Right now Ko Samui has Light rain shower, humidity 75%, wind 21 km/h WNW.
What is today's forecast for Ko Samui?
Today in Ko Samui: high 28°C, low 27°C, light rain shower. Chance of rain: 83%.
What is the 7-day weather forecast for Ko Samui?
Daily highs and lows for Ko Samui:
- 2026-09-12: 28°C / 27°C
- 2026-09-13: 28°C / 25°C
- 2026-09-14: 28°C / 27°C
- 2026-09-15: 29°C / 28°C
- 2026-09-16: 30°C / 28°C
- 2026-09-17: 29°C / 28°C
- 2026-09-18: 28°C / 27°C
Is it going to rain in Ko Samui today?
There is a 83% chance of rain in Ko Samui today. Total expected precipitation: 23.67 mm.
What is the wind speed in Ko Samui right now?
Wind in Ko Samui is currently 21 km/h (13 mph) from the WNW.
What is the UV index in Ko Samui right now?
The UV index in Ko Samui is currently 2.5 (low). Sun protection is recommended when the index is 3 or higher.
