Everyone was in Greece this summer. After a two-year pause, Mykonos, Santorini, and the ancient sites of Athens were more crowded than record-breaking 2019, when 33 million travelers arrived on the Grecian shores.

We all know someone who was there: 500,000 Americans spent their summer holiday in the Mediterranean country, according to the Greek Ministry of Tourism, with 5.12 million travelers arriving in July alone, compared to 4.49 million in 2019.

“I spend three weeks in Greece every summer and I am gone by July 1,” said Kelly Shea, founder of high-end travel agency Kelly Shea Travels. “I can’t deal with the crowds or the heat.”

Her other favorite time of year? September and October, especially by yacht.

“If the island doesn’t have an airport, you’re relegated to the Greek ferry system, which is complicated and inconsistent. If you charter a boat, you can go where you want when you want, assuming the distance is feasible.”

Fall provides fantastic weather for exploring a more laid-back Greece by yacht, and better still, plenty of vessels of varying price points available during the cooler, calmer months (praise Zeus for the current parity exchange rate).

“From September onward, the temperature is very good, from 28 to 32 degrees centigrade,” Dimitris Altanis, a captain based in Athens, told The Post. “And while there can be some rain,…