Best year time to visit Koya

General weather information about Koya

Average annual temperature is 11.6 °C

Absolute maximum temperature: 35.1 °C

Absolute minimum temperature: -10.7 °C

Number of sunny days: 73 days

Number of rainy days: 246 days

Number of snow days: 46 days

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

Koya air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)9.38.017.323.428.326.631.835.134.323.322.614.4
Average daytime temperature (°C)1.22.09.715.018.822.827.631.726.517.012.36.1
Average temperature (°C)-1.3-0.74.59.413.618.623.226.121.912.57.82.4
Average night temperature (°C)-3.5-3.30.65.39.315.219.722.018.89.14.5-0.4
Absolute minimum temperature (°C)-10.7-7.1-5.2-1.41.39.615.220.111.95.7-3.3-10.0

Koya 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)9.910.812.013.214.214.714.513.612.411.210.29.6
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)3.75.48.08.28.47.79.511.67.78.15.54.1
Precipitation (mm)205175889614922514976177124203202
Sunny days251413134137650
Rainy days91112171826302823252423
Snow days20125000000018

Koya - weather forecast by months

Koya weather in januaryKoya weather in februaryKoya weather in marchKoya weather in aprilKoya weather in mayKoya weather in juneKoya weather in julyKoya weather in augustKoya weather in septemberKoya weather in octoberKoya weather in novemberKoya weather in december

Best time to visit Koya:

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

  • July — 9.5(h)
  • August — 11.6(h)

The largest precipitation sum in Koya is at

  • January — 205(mm)
  • June — 225(mm)
  • November — 203(mm)
  • December — 202(mm)

    • Weather forecast in the closest to Koya admin centers

    Weather forecast in the closest towns to Koya

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    Frequently asked questions

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