For Koh Tao :
No gale warning.
The reliability of the situation is good.
Stormy day. Showers all day. In the evening, very cloudy with risk of storms.
Light showers. WNW force 4 in the morning becoming NW force 3 in the middle of the day. Smooth to slight sea. Low, short swell from NE. Excellent visibility becoming good in the middle of the day then good.