In the Saronic, the meltemi (winds from the North usually strong especially in July and August) does not blow as regularly as it does in the Cyclades, where it blows from North to North East. Its strength is usually about 4-5 beaufort and it is less around the Methana peninsula and Poros. If the Meltemi does not blow, the wind generally comes from the South, at about 2-3 beaufort. In the Hydra Gulf and Argolic Gulf, the wind blows mostly from the South Eastern direction, at 3-5 beaufort.

In the Cyclades, the wind pattern in the summer is the Meltemi blowing from the north; it starts blowing in June, increases in July/August and decreases in middle September. In July and August the wind blows at force 5-6 beaufort and may reach force 7-8 beaufort. It may blow for 1-3 days or sometimes blow for one week continuously. In the other months the wind strength is less, around force 3-4 beaufort.