The best time to visit Korydallos, Attica, Greece, is during the spring (April to June) and autumn (September to October) months.
During these periods, the weather is pleasantly warm and sunny, without the intense heat of mid-summer. This makes it ideal for exploring the local shops and cafes, enjoying outdoor dining, and visiting nearby archaeological sites. Spring brings blooming flowers and a fresh atmosphere, while autumn offers comfortable temperatures and fewer crowds.
Summer (July and August) can be very hot, with temperatures often exceeding 30°C (86°F). While this is superb for beach activities if you're planning day trips to the coast, exploring the urban areas of Korydallos might be less comfortable during the peak midday heat. However, evenings are typically warm and superb for enjoying the local nightlife and dining al fresco.
Winter (November to March) in Korydallos is generally mild but can be rainy. While you'll encounter the fewest tourists, some outdoor attractions might have reduced hours, and the weather might not be conducive to extensive outdoor exploration.