Best year time to visit Oshima

General weather information about Oshima

Average annual temperature is 15.8 °C

Absolute maximum temperature: 36.0 °C

Absolute minimum temperature: -5.3 °C

Number of sunny days: 106 days

Number of rainy days: 254 days

Number of snow days: 5 days

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

Oshima air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)15.812.119.620.124.428.532.436.033.024.824.719.6
Average daytime temperature (°C)6.87.112.915.519.724.028.933.128.420.515.610.3
Average temperature (°C)4.44.89.312.416.521.326.229.625.517.613.28.0
Average night temperature (°C)2.02.46.19.513.719.023.726.623.115.010.75.6
Absolute minimum temperature (°C)-5.3-1.71.56.37.016.320.023.319.09.73.6-1.6

Oshima monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.014.012.011.010.09.0
Daylight mean duration (h)9.910.812.013.114.114.714.413.512.411.210.29.7
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)5.45.78.48.18.88.69.611.18.08.56.34.5
Precipitation (mm)1689510317619323017969163138196241
Sunny days35141514912143953
Rainy days271917151721191727222528
Snow days140000000000

Oshima - weather forecast by months

Oshima weather in januaryOshima weather in februaryOshima weather in marchOshima weather in aprilOshima weather in mayOshima weather in juneOshima weather in julyOshima weather in augustOshima weather in septemberOshima weather in octoberOshima weather in novemberOshima weather in december

Best time to visit Oshima:

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

  • August — 11.1(h)

The largest precipitation sum in Oshima is at

  • June — 230(mm)
  • December — 241(mm)

    • Weather forecast in the closest to Oshima admin centers

    Weather forecast in the closest towns to Oshima

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    Frequently asked questions

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