Best year time to visit Kōso

General weather information about Kōso

Average annual temperature is 11.3 °C

Absolute maximum temperature: 34.7 °C

Absolute minimum temperature: -13.3 °C

Number of sunny days: 68 days

Number of rainy days: 245 days

Number of snow days: 52 days

Look at detailed online map of Kōso

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

Kōso air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)9.48.720.320.224.927.330.734.730.822.122.511.8
Average daytime temperature (°C)0.51.610.814.018.523.326.131.626.217.511.03.5
Average temperature (°C)-3.0-1.75.39.313.519.323.027.121.712.97.50.1
Average night temperature (°C)-6.4-5.40.85.79.616.320.323.818.89.64.6-3.2
Absolute minimum temperature (°C)-13.3-11.5-7.40.71.411.314.621.611.42.9-7.2-12.1

Kōso monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.710.711.913.314.415.014.713.712.511.110.09.4
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)5.45.78.48.59.27.58.011.37.57.95.24.2
Precipitation (mm)77799419320320446892233183237114
Sunny days11158105464932
Rainy days91215222125272526222318
Snow days211510000000411

Kōso - weather forecast by months

Kōso weather in januaryKōso weather in februaryKōso weather in marchKōso weather in aprilKōso weather in mayKōso weather in juneKōso weather in julyKōso weather in augustKōso weather in septemberKōso weather in octoberKōso weather in novemberKōso weather in december

Best time to visit Kōso:

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

  • August — 11.3(h)

The largest precipitation sum in Kōso is at

  • July — 468(mm)
  • September — 233(mm)
  • November — 237(mm)

    • Weather forecast in the closest to Kōso admin centers

    Weather forecast in the closest towns to Kōso

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    Frequently asked questions

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