Best year time to visit Isa

General weather information about Isa

Average annual temperature is 16.6 °C

Absolute maximum temperature: 33.6 °C

Absolute minimum temperature: -5.1 °C

Number of sunny days: 140 days

Number of rainy days: 222 days

Number of snow days: 3 days

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

Isa air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)20.319.322.624.529.330.633.533.632.128.525.520.2
Average daytime temperature (°C)10.113.117.620.324.026.530.030.929.822.717.612.3
Average temperature (°C)5.78.112.215.419.122.426.026.525.017.212.98.0
Average night temperature (°C)2.54.27.911.315.219.423.523.621.712.99.34.6
Absolute minimum temperature (°C)-5.1-2.1-0.73.88.316.021.421.618.98.42.8-3.5

Isa 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)10.311.012.013.013.814.214.013.312.411.410.510.1
Daylight minimum duration (h)10.010.011.012.013.014.013.012.011.010.010.010.0
Sunshine mean duration (h)6.56.57.57.38.36.38.89.89.88.58.06.0
Precipitation (mm)86158167251278538283280977760116
Sunny days15151713146124191816
Rainy days151314171724302926121213
Snow days100000000002

Isa - weather forecast by months

Isa weather in januaryIsa weather in februaryIsa weather in marchIsa weather in aprilIsa weather in mayIsa weather in juneIsa weather in julyIsa weather in augustIsa weather in septemberIsa weather in octoberIsa weather in novemberIsa weather in december

Best time to visit Isa:

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

  • August — 9.8(h)
  • September — 9.8(h)

The largest precipitation sum in Isa is at

  • April — 251(mm)
  • May — 278(mm)
  • June — 538(mm)
  • July — 283(mm)
  • August — 280(mm)

    • Weather forecast in the closest to Isa admin centers

    Weather forecast in the closest towns to Isa

    Explore Isa

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    Frequently asked questions

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