Assuming your trip falls during high season—which is between late June and early September—the weather will fluctuate between hot and oppressively hot. Light, breathable fabric is key: think linen, sheer tops, and shorts to tour around during the day; flowy maxi dresses or caftans for dinner at night.
For an evening in Mykonos, consider wearing something comfortable yet chic. While the atmosphere is generally relaxed, many people dress up a bit at night, especially if they're going to a nice restaurant or club. Women often wear stylish dresses or blouses and skirts, while men might wear linen shirts and trousers.
By the same token, evenings can be cool and breezy in many parts of Greece. Make sure to bring a light sweater or jacket to keep warm on the patio of the taverna as you enjoy your spanakopita. A packable rain jacket can also come in handy if there's a big downpour.
Santorini is an island of the Aegean Sea. Greece is mostly inhabited by Orthodox Christians. There are more than 450 churches in Santorini! Generally, there is no dress code on the island unless you plan to visit specific restaurants, bars and clubs of high standards.
Gestures: The hand gesture that signals 'Okay' (by putting one's forefinger and thumb together to make a circle) is an obscenity in Greece. It is also severely insulting to hold up your open palm, fingers spread, at someone's face.
Moutza) The worst gesture you can make in Greece is the 'moutza' which is holding up your hand like a 'stop' sign and showing the full open palm of your hand with your fingers spread out.
Soft Pastels: Serenity in Hues Pastel shades like blush pink, baby blue, and mint green are perfect for those seeking a softer, romantic look. These gentle hues blend seamlessly with Santorini's natural palette, reflecting the island's tranquility and serenity.
It's best to stick to loafers and cute sandals or flats. Jeans. With the exception of a light breathable jeans, you probably won't even bother pulling these out of your suitcase due to the heat. Instead, pack light linen or flowy pants and you'll be golden!