For Koh Tao :
No gale warning.
The reliability of the situation is good.
Storms developing in the morning, very cloudy with possibility of thunder storms in the afternoon. Some showers in the morning, possibility of showers in the afternoon. In the evening, changeable skies with risk of storms.
Showers. SE force 2 turning E force 3 in the middle of the day then SE. Smooth to slight sea. Low, short swell from SE. Poor visibility becoming good in the middle of the day then good.