Climate in Koyasan (Wakayama), Japan

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Average monthly minimum and maximum temperature in Koyasan, Japan

Feel free to add this climate graph to your website. Click the copy button above.

Monthly hours of sunshine

The average monthly total hours of sunshine over the year

Average monthly hours of sunshine in Koyasan, Japan

Feel free to add this climate graph to your website. Click the copy button above.

* Data from: Wakayama, Japan (37 KM, 23 Miles).

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Average monthly rainfall, snow, precipitation in Koyasan, Japan

Feel free to add this climate graph to your website. Click the copy button above.

Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average monthly rainy days in Koyasan, Japan

Feel free to add this climate graph to your website. Click the copy button above.

Average humidity

The mean monthly relative humidity over the year

Average monthly relative humidity in Koyasan, Japan

Feel free to add this climate graph to your website. Click the copy button above.

* Data from: Wakayama, Japan (37 KM, 23 Miles).

Weather Forecasts for Koyasan

Fri   Mar 29
19°C | 11°C
SW 25 km/h
20 mm
partly cloudy and rain

partly cloudy and rain

Sat   Mar 30
21°C | 10°C
W 14 km/h
0.1 mm
partly cloudy and small chance of slight rain

partly cloudy and small chance of slight rain

Sun   Mar 31
21°C | 12°C
W 11 km/h
broken clouds and no rain

broken clouds and no rain

The best time of year to visit Koyasan in Japan

During the months of May and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • When is summer in Koyasan?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Koyasan?
    August has an average maximum temperature of 32°C and is the warmest month of the year.
  • Which is the coldest month in Koyasan?
    The coldest month is January with an average maximum temperature of 8°C.
  • Which is the wettest month in Koyasan?
    June tops the wettest month list with 299 mm of rainfall.
  • Which is the driest month in Koyasan?
    December is the driest month with 91 mm of precipitation.
  • Which is the sunniest month in Koyasan?
    August is the sunniest month with an average of 228 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.