After researching countless rental car services for Mount Fuji, this was the most affordable one! Other companies charge 14,000 to 15,000 yen excluding highway tolls, while our trip, including highway tolls, parking fees, and extra time, cost just over 15,000 yen. We could choose the driver's language, making communication seamless and convenient throughout the journey. We were incredibly grateful to our driver, Asahisan, for driving us around all day. He even checked the weather forecast beforehand, adjusting our itinerary and offering advice. He specifically checked the weather before departure 🥹 to warn us of a possible cloudy morning, suggesting it might not be suitable to visit Mount Fuji as planned. He recommended visiting other attractions first, and also provided suggestions based on the location and distance of the planned attractions, allowing us to see as much as possible within the limited time without incurring extra charges (although traffic congestion on the highway still resulted in extra fees). A truly fantastic experience! ☺️🫶
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
12/28
Sunday
Sunny
8.1°C/-0.7°C
12/29
Monday
Sunny
9.8°C/0.2°C
12/30
Tuesday
Patchy rain nearby
11.2°C/3.3°C
12/31
Wednesday
Patchy rain nearby
7.1°C/2.3°C
1/1
Thursday
Patchy rain nearby
6°C/0.8°C
1/2
Friday
Partly Cloudy
7°C/0.1°C
1/3
Saturday
Partly Cloudy
8.8°C/0.7°C
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