Spring (March–May): Average 1.9–13.8°C, cool and rainy, but with increasing sunshine. Common activities: Flower viewing (e.g., cherry blossoms, tulips), hiking. Recommended clothing: Warm jacket, long-sleeved clothing, comfortable walking shoes.
Summer (June–August): Average 17.9–24.1°C, warm and humid, with abundant rainfall, especially in August. Common activities: Beach activities, hiking (be mindful of rain). Recommended clothing: Lightweight and breathable clothing, rain gear, sunscreen.
Autumn (September–November): Average 12.4–20.1°C, pleasant weather, less rainfall than summer, but rain is still possible. Common activities: Maple leaf viewing, onsen (hot spring) visits, trying local cuisine. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Winter (December–February): Average -2.5–-0.9°C, cold and dry, low chance of snowfall, but low temperatures and strong winds. Common activities: Skiing (requires going to mountainous areas), viewing snow scenery (depending on snowfall). Recommended clothing: Warm thick jacket, hat, scarf, gloves, thermal underwear.