The Aegean and Ionian island groups of Greece experience mild and increasingly sunny conditions during April. Daytime temperatures typically range from 15-20C (59-68F), while evenings can be cooler, especially in the early part of the month. Rainfall diminishes significantly compared to winter, though occasional showers are still possible. Sea temperatures remain relatively cool, generally around 16-17C (61-63F).
This period offers pleasant conditions for exploring the islands’ rich history, archaeological sites, and charming villages without the intense heat of summer. The burgeoning wildflowers and verdant landscapes create a vibrant backdrop for hiking and outdoor activities. While swimming might be reserved for the hardiest, the calmer seas and reduced crowds make April an ideal time for boat trips and exploring coastal areas. Historically, April marks the beginning of the tourist season, offering a balance between favorable weather and fewer visitors compared to peak summer months.