Best year time to visit Ōiso

General weather information about Ōiso

Average annual temperature is 7.8 °C

Absolute maximum temperature: 29.3 °C

Absolute minimum temperature: -16.9 °C

Number of sunny days: 98 days

Number of rainy days: 188 days

Number of snow days: 79 days

Look at detailed online map of Ōiso

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

Ōiso air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)4.33.48.911.718.223.226.529.325.219.815.910.4
Average daytime temperature (°C)-4.6-3.53.57.212.818.522.224.321.714.86.5-0.9
Average temperature (°C)-6.4-4.81.74.99.515.219.621.518.912.24.0-3.1
Average night temperature (°C)-8.2-6.30.13.06.912.617.519.616.310.01.7-5.1
Absolute minimum temperature (°C)-16.9-10.1-4.4-0.60.16.712.115.311.03.6-7.0-9.9

Ōiso 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)9.210.411.913.514.915.615.214.112.511.09.68.8
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)5.56.47.87.910.09.39.98.28.67.84.73.2
Precipitation (mm)81666412835118125250189125207145
Sunny days141311171112312833
Rainy days561118141919281823189
Snow days251871000000919

Ōiso - weather forecast by months

Ōiso weather in januaryŌiso weather in februaryŌiso weather in marchŌiso weather in aprilŌiso weather in mayŌiso weather in juneŌiso weather in julyŌiso weather in augustŌiso weather in septemberŌiso weather in octoberŌiso weather in novemberŌiso weather in december

Best time to visit Ōiso:

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

  • May — 10.0(h)
  • July — 9.9(h)

Months with the longest average daylight duration in Ōiso:

  • June — 15.6(h)

The largest precipitation sum in Ōiso is at

  • August — 250(mm)
  • September — 189(mm)
  • November — 207(mm)

    • Weather forecast in the closest to Ōiso admin centers

    Weather forecast in the closest towns to Ōiso

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    Frequently asked questions

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