For Schinias, Marathonas :
No gale warning.
The reliability of the situation is very good.
Cloudy spells, sometimes dense. No precipitation. In the evening, lots of good clear periods.
No precipitation. NE wind force 3 from the middle of the day. Gusts reaching 16 knots. Smooth sea. Low, short swell from NNW then from N in the evening. Excellent visibility becoming good in the evening.