In Greece, the yacht charter season is primarily divided into two main periods: the summer season and the winter season.

1. Summer Season:

   • Duration: Early May to late October.
   • Peak Months: June, July, August, and September.
   • Weather: Warm and dry with temperatures ranging from 25°C to 35°C (77°F to 95°F). Ideal for sailing due to calm seas and consistent winds, particularly the Meltemi winds in the Aegean Sea.

2. Winter Season:

   • Duration: November to April.
   • Characteristics: Cooler temperatures, ranging from 10°C to 20°C (50°F to 68°F), and more unpredictable weather conditions. The sea can be rougher, and there are fewer daylight hours.

It's worth noting that some areas in Greece might experience slight variations in these timeframes due to local climate conditions, but generally, the summer and winter seasons for yacht charters follow this pattern.