For Skiathos :
No gale warning.
For the night from Saturday to Sunday WSW force 1 turning WNW force 2 in the middle of the night then NW.
Smooth to slight sea temporarily smooth in the middle of the night. Low, short swell from E. Good visibility becoming good in the middle of the night then good. Daytime of Sunday 18 may : The sky will remain changeable.
Cloud and long sunny periods. Risk of showers in the morning, possibility of showers in the afternoon. In the evening, cloud and long sunny periods.
Possibility of showers NNW force 2 turning NE in the middle of the day then SE. Smooth to slight sea becoming smooth in the middle of the day. Low, short swell from NE. Good visibility becoming excellent in the middle of the day then excellent.