Best year time to visit Iruma

General weather information about Iruma

Average annual temperature is 18.2 °C

Absolute maximum temperature: 31.4 °C

Absolute minimum temperature: 1.1 °C

Number of sunny days: 155 days

Number of rainy days: 209 days

Number of snow days: 1 day

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

Iruma air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)18.017.719.320.422.527.131.431.331.028.424.920.4
Average daytime temperature (°C)11.212.215.417.819.923.328.430.028.322.418.513.8
Average temperature (°C)9.710.614.116.318.822.226.027.226.019.716.011.4
Average night temperature (°C)7.98.712.414.517.621.123.625.024.017.113.89.0
Absolute minimum temperature (°C)1.14.17.610.414.018.420.823.419.814.38.93.9

Iruma 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)10.110.912.013.114.014.414.213.412.411.310.49.9
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)7.27.17.58.79.17.411.110.99.98.87.77.6
Precipitation (mm)801312001932473086218724019913393
Sunny days1710121514131645141421
Rainy days131819151717152725171610
Snow days100000000000

Iruma - weather forecast by months

Iruma weather in januaryIruma weather in februaryIruma weather in marchIruma weather in aprilIruma weather in mayIruma weather in juneIruma weather in julyIruma weather in augustIruma weather in septemberIruma weather in octoberIruma weather in novemberIruma weather in december

Best time to visit Iruma:

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

  • July — 11.1(h)
  • August — 10.9(h)

The largest precipitation sum in Iruma is at

  • May — 247(mm)
  • June — 308(mm)
  • September — 240(mm)

    • Weather forecast in the closest to Iruma admin centers

    Weather forecast in the closest towns to Iruma

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    Frequently asked questions

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