The best time to visit Ioannina is April through June and September through October, when temperatures are comfortable (15–25 °C), the lake is calm and clear, wildflowers carpet Zagori, and crowds are minimal.
Spring (April–May): The mountains are still snow-capped, waterfalls in Vikos are full, and the city is lush and green. Ideal for hiking and photography. Pack a light layer for evenings.
Summer (June–August): Warm and sunny with occasional thunderstorms rolling in from the Pindus. July and August see Greek domestic tourists and some festivals, but Ioannina never feels overwhelmed. The lake is inviting for kayaking. Expect highs of 30–34 °C in July–August.
Autumn (September–October): Golden light, cooler hiking conditions, and the harvests of local chestnuts and mushrooms. September is arguably the single best month — warm, quiet, and beautiful.
Winter (November–March): Cold and often rainy or snowy; the Kastro and lake views take on a moody, romantic quality rarely seen in Greek tourism photography. Hotel prices drop significantly. Ski resorts at Metsovo (45 minutes) open from December. Not ideal for gorge hiking but perfect for a cosy cultural city break.