Greece sees hordes of summer visitors drawn to its islands and coastlines under intense July–August sunshine, though that’s when beaches are most vibrant. For more moderate temperatures, fewer crowds, and generally lower travel costs, April–June and September–October are popular. You’ll still find plenty of sun for swimming or island-hopping in these months, especially in the southern isles. Winter (November–March) is considered off-season, with many island accommodations closing, but it can be a quietly enjoyable period for exploring mainland sites like Athens or Delphi. Visitors also appreciate spring’s wildflower blooms across rural landscapes. Ultimately, if you envision enjoying clear waters, soaking up local culture, and touring ancient ruins in mild weather, plan your Greek odyssey for the late shoulder season.
January: Cool, some islands quiet; Athens has mild crowds.
February: Slight uptick in temps, occasional rains, fewer tourists.
March: Early spring, wildflowers blooming, ideal for mainland exploration.
April: Orthodox Easter celebrations, comfortable weather for island tours.
May: Beaches become swimmable, sunny skies, lively city squares.
June: Warmer, start of peak tourist season, clear seas.
July: Hot, busy islands, vibrant nightlife, summer festivals.
August: Hottest month, top crowd levels, great for beach parties.
September: Warm seas, eased tourism, grape harvest time.
October: Mild weather, some islands start to wind down.
November: Rain increases, quieter ancient sites, cheaper deals.
December: Cool, off-season for islands, festive Athens atmosphere.