Best year time to visit Ōnakajima

General weather information about Ōnakajima

Average annual temperature is 11.8 °C

Absolute maximum temperature: 34.9 °C

Absolute minimum temperature: -10.1 °C

Number of sunny days: 74 days

Number of rainy days: 262 days

Number of snow days: 29 days

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

Ōnakajima air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.08.417.421.928.426.931.934.932.821.824.514.8
Average daytime temperature (°C)1.41.79.214.118.823.327.632.226.617.312.45.7
Average temperature (°C)-1.2-0.64.08.913.719.023.327.022.013.08.62.5
Average night temperature (°C)-3.3-2.7-0.44.89.515.520.022.518.89.75.7-0.5
Absolute minimum temperature (°C)-10.1-6.3-4.0-2.62.411.013.418.711.85.4-3.0-7.7

Ōnakajima monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.014.013.011.010.09.0
Daylight mean duration (h)9.810.812.013.214.314.814.613.612.411.210.19.5
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)3.14.57.87.98.58.39.111.87.87.54.93.1
Precipitation (mm)33026214615322819227470245314346327
Sunny days021410106881852
Rainy days171517202124232329232525
Snow days14110000000004

Ōnakajima - weather forecast by months

Ōnakajima weather in januaryŌnakajima weather in februaryŌnakajima weather in marchŌnakajima weather in aprilŌnakajima weather in mayŌnakajima weather in juneŌnakajima weather in julyŌnakajima weather in augustŌnakajima weather in septemberŌnakajima weather in octoberŌnakajima weather in novemberŌnakajima weather in december

Best time to visit Ōnakajima:

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

  • July — 9.1(h)
  • August — 11.8(h)

The largest precipitation sum in Ōnakajima is at

  • January — 330(mm)
  • October — 314(mm)
  • November — 346(mm)
  • December — 327(mm)

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    Frequently asked questions

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