For Koh Samui :
No gale warning.
The reliability of the situation is good.
Cloud and long sunny periods. No precipitation. In the evening, light cloudy spells.
S force 2 turning SE in the middle of the day then becoming force 3. Gusts reaching 11 knots in the evening. Smooth sea. Low, short swell from ESE. Poor visibility becoming excellent in the middle of the day then good.