Spring (April-May): Mild temperatures (15-25°C), blooming flowers, and Easter celebrations create an ideal visiting season. The city awakens after winter with outdoor activities and festivals.
Fall (September-October): Warm but not excessively hot (20-28°C), perfect for exploring on foot. The summer heat subsides, making sightseeing comfortable and pleasant.
Summer (June-August): Hot and dry (25-32°C) with occasional heatwaves. Beaches and waterfront areas are popular, but city exploration requires early morning or evening visits. Tourist season is peak with higher prices and crowds.
Winter (November-March): Cool and occasionally rainy (5-15°C), but fewer tourists and lower prices. Some outdoor attractions may have limited hours. Indoor museums and indoor markets are ideal activities.
Climate Summary: Mediterranean climate with hot summers and mild winters. Thessaloniki experiences roughly 300 days of sunshine annually. August is typically the hottest and busiest month; avoid visiting if seeking lower prices or avoiding crowds.