Weather in Iosumi in December

General weather information about Iosumi

Average annual temperature is 11.7 °C

Absolute maximum temperature: 30.1 °C

Absolute minimum temperature: -11.6 °C

Number of sunny days: 111 days

Number of rainy days: 233 days

Number of snow days: 21 days

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

Iosumi air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)13.013.119.223.124.927.629.630.129.121.721.015.6
Average daytime temperature (°C)3.04.711.815.118.522.127.727.325.516.812.27.1
Average temperature (°C)-0.70.87.09.914.018.222.823.021.012.38.03.3
Average night temperature (°C)-4.3-2.93.05.810.215.019.120.117.78.84.4-0.2
Absolute minimum temperature (°C)-11.6-8.7-4.00.74.59.516.217.913.93.8-0.9-6.8

Iosumi 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)10.211.012.013.013.914.414.213.412.411.310.49.9
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)6.76.58.38.18.56.910.69.29.78.67.16.5
Precipitation (mm)9470130200209445562807212313586
Sunny days10101691098261399
Rainy days111414212121232924182116
Snow days1041000000006

Iosumi - weather forecast by months

Iosumi weather in januaryIosumi weather in februaryIosumi weather in marchIosumi weather in aprilIosumi weather in mayIosumi weather in juneIosumi weather in julyIosumi weather in augustIosumi weather in septemberIosumi weather in octoberIosumi weather in novemberIosumi weather in december

Best time to visit Iosumi:

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

  • July — 10.6(h)

The largest precipitation sum in Iosumi is at

  • April — 200(mm)
  • May — 209(mm)
  • June — 445(mm)
  • August — 280(mm)

    • Weather forecast in the closest to Iosumi admin centers

    Weather forecast in the closest towns to Iosumi

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    Frequently asked questions

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