Best year time to visit Nagano

General weather information about Nagano

Average annual temperature is 14.9 °C

Absolute maximum temperature: 34.4 °C

Absolute minimum temperature: -7.3 °C

Number of sunny days: 112 days

Number of rainy days: 246 days

Number of snow days: 7 days

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* Weather data for Nagano Japan is based on climate observations for 2026 year

Nagano air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)14.614.323.723.126.828.932.334.429.723.325.019.9
Average daytime temperature (°C)6.68.814.317.021.124.628.930.126.819.715.39.8
Average temperature (°C)3.55.310.112.917.121.025.326.023.216.011.46.6
Average night temperature (°C)0.82.56.79.513.918.222.723.020.713.18.33.8
Absolute minimum temperature (°C)-7.3-1.6-0.85.67.713.920.221.217.09.13.0-2.5

Nagano monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.211.012.013.013.914.314.113.412.411.310.410.0
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)6.06.27.88.08.27.88.810.89.28.77.35.5
Precipitation (mm)1321361452102672332262231453986104
Sunny days1011131510720417158
Rainy days181618152123293126141520
Snow days310000000003

Nagano - weather forecast by months

Nagano weather in januaryNagano weather in februaryNagano weather in marchNagano weather in aprilNagano weather in mayNagano weather in juneNagano weather in julyNagano weather in augustNagano weather in septemberNagano weather in octoberNagano weather in novemberNagano weather in december

Best time to visit Nagano:

The best time to visit Nagano during the most sunny months:

  • August — 10.8(h)

The largest precipitation sum in Nagano is at

  • April — 210(mm)
  • May — 267(mm)
  • June — 233(mm)
  • July — 226(mm)
  • August — 223(mm)

    • Weather forecast in the closest to Nagano admin centers

    Weather forecast in the closest towns to Nagano

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    Frequently asked questions

    When is the best time to visit Nagano?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Nagano.
    What is the weather like in Nagano?
    See average temperature, rainfall and daylight hours for Nagano by month in the table above.
    How many sunny days does Nagano have?
    The monthly weather statistics above show sunshine and rainfall patterns for Nagano throughout the year.