Shinano Weather & Climate: Best Time to Visit

Temperatures in Shinano, Niigata Prefecture, Japan, vary greatly throughout the year. August is the hottest month at 29°C (84°F), while January is the coldest at 3°C (37°F).

The city receives considerable rain/snowfall, with around 2319 mm (91 in) annually. July is the wettest month. It has a distinct rainy season from June to February. May is the sunniest month, averaging 7.0 hours of sunshine per day.

Monthly Temperature in Shinano

The climate in Shinano is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 29°C (84°F) in August to a chilly 3°C (37°F) in the coolest month, January.

Nights vary from 20°C (68°F) in August to around -5°C (23°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Shinano

Shinano has a notably wet climate with abundant precipitation, recording 2319 mm (91 in) of rain/snowfall per year. Shinano offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month July (286 mm (11 in)) and the driest month April (136 mm (5.4 in)) is not too significant. For more details, please visit our Shinano Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Sunshine Hours in Shinano

Shinano offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between May (7.0 hours daily) and January (4.3 hours daily) provides a bit of variety for visitors and residents.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Nagano, Japan (18 KM, 11 Miles).

Daily hours of sunshine

Data from: Nagano, Japan (18 KM, 11 Miles).

Humidity in Shinano by Month

The relative humidity is high throughout the year in Shinano.

The city experiences its highest humidity in January, reaching 78%. In April, the humidity drops to its lowest level at 61%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

Data from: Nagano, Japan (18 KM, 11 Miles).

Shinano 3-Day Forecast

10-Day Forecast

Select a Month

Check the conditions for any month of the year.

Best Time to Visit Shinano

Shinano's weather is most enjoyable during May, with comfortable temperatures of 21°C (69°F). The moderate conditions ensure pleasant weather for exploring the area. Expect rainfall of 153 mm (6 in) during this period, providing a good balance of sunny and rainy days.

Wondering where to travel based on your weather preferences? Our recommendation tool helps you find destinations with your ideal climate conditions. Use our weather planner to find your perfect destination.