When To Go
Greece’s High Season is from June to August. During these months, everything is open – sights, tours, transportation, etc. But accommodation prices can be double what they are the rest of the year, and tourists and temperatures will be at their highest.
The Shoulder Season from April to May and September to October is considered the best time to visit Greece. Accommodation prices are about 20% lower, and the temperature and tourist numbers are lower. But internal flights and ferries have reduced schedules, and April and October will be quite cold at the beaches.
Some islands close their beaches from October to April, so check on this before you finalize your plans.
The Low Season is from November to March when accommodation rates can drop by as much as 50%. But many hotels, sights, and restaurants shut down, especially on the islands, ferry schedules are limited, and it will be cold. The mainland usually has snow during these months.
If you want to be laying out on an island beach, you need to go from May-September.