Spring (March-May): Pleasant temperatures (15-25°C), blooming wisteria, comfortable garden walking. Peak tourist season.
Autumn (September-November): Clear skies, ideal photography conditions, comfortable temperatures (15-25°C), fewer crowds than spring.
Summer (June-August): Hot and humid (25-35°C), frequent rain, but garden evening performances available. Fewer international tourists.
Winter (December-February): Cold (0-10°C), occasional snow, sparse crowds. Gardens less scenic due to bare trees and gray skies.
Avoid: Golden Week (October 1-7) and Lunar New Year when crowds overwhelm attractions and prices spike.