Spring (April-May): Pleasant temperatures (12-18°C), blooming flowers, and moderate crowds make spring ideal. Parks showcase cherry blossoms and botanical gardens peak with colors.
Summer (June-September): Warm weather (20-28°C) attracts peak tourism. Festivals proliferate, outdoor activities flourish, but accommodations become pricier and crowds increase significantly.
Autumn (September-November): Comfortable temperatures (10-20°C) and wine harvest season make fall attractive. Fewer tourists than summer while maintaining pleasant weather. Beaujolais wine festival (Beaujolais Nouveau) in November is celebration.
Winter (December-March): Cold temperatures (0-8°C) see fewer visitors. Christmas markets enliven the city, though some attractions have reduced hours. Budget-friendly season for accommodations and dining.
Rainfall: Lyon experiences moderate rainfall year-round, with autumn being wettest. Pack umbrella regardless of season.