If you were to visit the Kamikochi and Kurobe Alpine Route on your own, you would need to do a lot of research and it would be quite inconvenient. With KKDAY's tour, we saved a lot of time on planning and didn't have to worry about many things. It was a worry-free, comfortable group tour. Our guide, Zheng Qiang, was very interesting and interactive, and he even took photos for us. He seemed to have a passion for photography, so his photos turned out quite well. The attractions are definitely worth visiting. The transportation, accommodation, and restaurant meals were all excellent. Overall, aside from having to get up early, there's nothing to complain about. Thumbs up!
A great tour guide, a great driver, great weather, and great attractions! Makes for a wonderful day! A place definitely worth exploring!
Anonymous User
Solo traveler
Koshinetsu Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Koshinetsu year round climate
Spring (March–May): Average 10.5–19.3°C, mild climate but with relatively high rainfall, especially abundant in April and May. Common activities: Spring outings, flower viewing. Recommended clothing: Light jacket, long-sleeved shirt, rain gear essential.
Summer (June–August): Average 23.7–29.5°C, hot and humid, frequent rainfall. Common activities: Sightseeing in summer resorts, water activities (such as river rafting, please pay attention to safety). Recommended clothing: Light and breathable clothing, sun hat, rain gear.
Autumn (September–November): Average 19.1–27.1°C, comfortable and pleasant climate, rainfall gradually decreasing. Common activities: Maple viewing, mountain hiking. Recommended clothing: Light jacket, long-sleeved shirt.
Winter (December–February): Average 5.1–7.2°C, cold and dry, low rainfall. Common activities: Skiing, onsen experience. Recommended clothing: Warm jacket, beanie, gloves, scarf.
Koshinetsu climatological average
Annual average temperature: approx. 17°C / Annual rainfall: approx. 1656 mm / Summer humidity: 70%–80% / Rainiest month: August
Koshinetsu monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
5.1°C
47.4
February
6.1°C
72.5
March
10.5°C
131.3
April
16.4°C
182.2
May
19.3°C
199.8
June
23.7°C
248.8
July
28.9°C
176
August
29.5°C
254.7
September
27.1°C
127.3
October
19.1°C
105.2
November
13.9°C
91.9
December
7.2°C
19.2
Koshinetsu weather for the next seven days
5/9
Saturday
Patchy rain nearby
19.2°C/9.9°C
5/10
Sunday
Sunny
22.6°C/8.2°C
5/11
Monday
Sunny
24°C/10.6°C
5/12
Tuesday
Sunny
25.8°C/12.4°C
5/13
Wednesday
Overcast
25.1°C/12.9°C
5/14
Thursday
Sunny
27.2°C/13.3°C
5/15
Friday
Sunny
28.4°C/14.7°C
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