Spring (March–May): 8.2–17.3°C on average, with a mild climate but increasing rainfall, especially from April to May. Popular activities: cherry blossom viewing, hiking, visiting Nikko Toshogu Shrine. Recommended clothing: light jacket, long-sleeved shirt, comfortable shoes.
Summer (June–August): 21.6–26.8°C on average, hot and humid, with more rainfall from June to September. Sun protection and rain gear are necessary. Popular activities: boating on Lake Chuzenji, swimming, hiking. Recommended clothing: light and breathable clothing, hat, rain gear.
Autumn (September–November): 11.4–24.2°C on average, with a comfortable and pleasant climate and gradually decreasing rainfall. It's a great season for viewing autumn leaves. Popular activities: viewing autumn leaves, onsen (hot springs), trying local cuisine. Recommended clothing: comfortable long-sleeved shirts, light jacket, warm clothing.
Winter (December–February): 2.2–4.8°C on average, cold and dry, with little rainfall. Popular activities: skiing, onsen (hot springs) experience, indoor sightseeing. Recommended clothing: warm coat, scarf, hat, gloves.