Spring (March–May): Average 7.5–17.2°C, mild climate, but early spring is still relatively cold with occasional rainfall. Cherry blossoms bloom from March to April, but are susceptible to weather conditions. Common activities: Cherry blossom viewing (please note the blooming period), hiking, onsen trips. Recommended clothing: Layering, warm clothing and rain jacket.
Summer (June–August): Average 22.0–28.4°C, hot and humid, with more rainfall in July and August. Common activities: Swimming at the beach, mountain hiking (pay attention to sun protection and heatstroke), enjoying Niigata rice and seafood. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): Average 11.9–24.9°C, pleasant climate, but early autumn is still relatively warm, while late autumn turns cooler. Autumn is a good season for viewing autumn leaves, but be mindful of rainfall. Common activities: Autumn leaf viewing, enjoying seasonal delicacies, onsen trips. Recommended clothing: Comfortable long-sleeved clothing, light jacket, comfortable shoes.
Winter (December–February): Average 3.2–5.2°C, cold and dry, with a low probability of snowfall, but more rainfall. Common activities: Skiing (requires travel to mountainous areas), onsen trips, enjoying winter scenery. Recommended clothing: Warm clothing, thick jacket, waterproof and windproof shoes.