This two-day tour of Tateyama Kurobe was a fantastic experience and highly recommended! Although the tour was guided in Japanese, I was initially a little worried about language barriers, but it didn't affect the tour at all. The itinerary was excellent, and transportation was extremely smooth, with seamless transfers between cable cars and buses. The guide was incredibly kind and helpful, using expressive body language, thoughtful time reminders, and smiles to take care of everyone, making us feel completely at ease. The sights were unforgettable! Witnessing the magnificent snow walls and Kurobe Reservoir firsthand is still deeply etched in my memory. Language was no barrier; the beautiful scenery and excellent service were the main attractions. Highly recommended!
The scenery in Sangokuchi is absolutely stunning. The driver was very kind, there was almost no traffic, and 3.5 hours of free time was more than enough. Exploring Sangokuchi was a true pleasure.
The drivers are considerate and humorous, making for a fantastic ride.
Anonymous User
Family
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
6/24
Wednesday
Patchy rain nearby
24.9°C/16°C
6/25
Thursday
Heavy rain
19.4°C/18.6°C
6/26
Friday
Heavy rain
20.7°C/18.9°C
6/27
Saturday
Patchy rain nearby
23.1°C/19.2°C
6/28
Sunday
Partly Cloudy
28.9°C/17.8°C
6/29
Monday
Sunny
28.1°C/17.7°C
6/30
Tuesday
Patchy rain nearby
28.7°C/18.2°C
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