Greece under the Mediterranean sun is one of Europe's greatest pleasures. From the Parthenon to volcanic Santorini, timing makes all the difference between a magical trip and a hot, crowded one.
Data based on Athens. Islands (Santorini, Mykonos, Crete) are slightly warmer and windier in summer due to the Meltemi wind.
Greece in summer delivers what postcards promise — blazing sunshine, deep blue seas, whitewashed villages, and endless taverna dinners. June and September are the sweet spots: near-identical weather to July–August but with significantly fewer tourists and lower prices. September scores 9.5/10 — arguably the best month in the Mediterranean.
July and August are ideal for beach lovers but crowded everywhere popular: Santorini's sunsets require arriving at 5pm to find a spot; Mykonos nightlife runs until dawn. If you want the Greek islands experience without the Instagram crowds, go in June or September.
Spring is perfect for Athens and cultural Greece — mild temperatures (19–25°C), wildflowers everywhere, and archaeological sites without summer's scorching heat. The Aegean is warming up for swimming by May (21°C). Easter in Greece is the biggest celebration of the year — extraordinary atmosphere, but accommodation books out months ahead.
Most island hotels and restaurants close from November to March — Santorini and Mykonos become ghost towns. Athens remains open and fascinating, with world-class museums and restaurants without summer prices. The mainland's mountains are beautiful with snow. If you're interested in Greek culture over beaches, winter visits to Athens offer excellent value.