Weather | 22–29°C (72–84°F), humid, with higher typhoon risk | 15–23°C (59–73°F), milder and easier for walking | 9–17°C (48–63°F), cooler, drier, and sharper |
Crowds | Moderate to high during Silver Week | Moderate, with spikes on weekends and late-month events | High at top foliage gardens and illuminations |
Atmosphere | Late summer energy, festivals, indoor-heavy afternoons | Balanced month: clear air, long city walks, and early autumn color | Full autumn mode with peak maple season |
Key events | Tokyo Game Show, September Grand Sumo Tournament, Silver Week | Sports Day, Tokyo International Film Festival, early foliage, Halloween events | Peak autumn foliage, Culture Day, Shichi-Go-San, Tokyo Ramen Show |
Public holidays | Respect for the Aged Day on September 21, 2026; Autumnal Equinox on September 23, 2026 | Sports Day on October 12, 2026 | Culture Day on November 3, 2026; Labor Thanksgiving Day on November 23, 2026 |
Budget | Higher around September 19–23 because of Silver Week | Mostly steady; rises around the long weekend and late-October Saturdays | Higher on foliage weekends and evening illumination dates |
Best for | Gamers, sumo fans, festival travelers | First-timers, city walkers, mixed indoor-outdoor trips | Garden lovers, photographers, repeat visitors |
Book early? | Yes for Silver Week hotels and September sumo | Yes for Sports Day weekend, skyline slots, and Fuji weekends | Yes for garden illuminations, popular hotels, and autumn day trips |
Transport tips | Build in extra time during Silver Week | Subways run smoothly; holiday Monday and weekend evenings get busier | Expect fuller trains to major gardens and day-trip hubs |