Best year time to visit Koishi

General weather information about Koishi

Average annual temperature is 7.3 °C

Absolute maximum temperature: 30.8 °C

Absolute minimum temperature: -17.4 °C

Number of sunny days: 93 days

Number of rainy days: 187 days

Number of snow days: 85 days

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

Koishi air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)5.75.413.114.923.725.727.530.826.420.314.710.2
Average daytime temperature (°C)-5.3-4.05.39.115.120.422.424.121.814.76.3-1.5
Average temperature (°C)-8.4-7.01.45.210.515.819.221.118.011.13.4-4.1
Average night temperature (°C)-11.5-10.1-1.82.36.912.416.719.114.98.41.0-6.6
Absolute minimum temperature (°C)-17.4-14.4-9.4-4.00.44.011.814.78.01.6-7.1-11.7

Koishi monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.210.411.913.514.915.615.314.112.511.09.58.8
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)5.25.57.97.910.19.18.17.08.17.74.33.4
Precipitation (mm)6259541404814215622517897205124
Sunny days2214714912612924
Rainy days431122172119251822196
Snow days252361000000921

Koishi - weather forecast by months

Koishi weather in januaryKoishi weather in februaryKoishi weather in marchKoishi weather in aprilKoishi weather in mayKoishi weather in juneKoishi weather in julyKoishi weather in augustKoishi weather in septemberKoishi weather in octoberKoishi weather in novemberKoishi weather in december

Best time to visit Koishi:

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

  • May — 10.1(h)
  • June — 9.1(h)

Months with the longest average daylight duration in Koishi:

  • June — 15.6(h)
  • July — 15.3(h)

The largest precipitation sum in Koishi is at

  • July — 156(mm)
  • August — 225(mm)
  • September — 178(mm)
  • November — 205(mm)

    • Weather forecast in the closest to Koishi admin centers

    Weather forecast in the closest towns to Koishi

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    Frequently asked questions

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